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Member "ffmpeg-3.4.2/doc/APIchanges" (12 Feb 2018, 113945 Bytes) of package /linux/misc/ffmpeg-3.4.2.tar.xz:


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    1 Never assume the API of libav* to be stable unless at least 1 month has passed
    2 since the last major version increase or the API was added.
    3 
    4 The last version increases were:
    5 libavcodec:    2015-08-28
    6 libavdevice:   2015-08-28
    7 libavfilter:   2015-08-28
    8 libavformat:   2015-08-28
    9 libavresample: 2015-08-28
   10 libpostproc:   2015-08-28
   11 libswresample: 2015-08-28
   12 libswscale:    2015-08-28
   13 libavutil:     2015-08-28
   14 
   15 
   16 API changes, most recent first:
   17 
   18 -------- 8< --------- FFmpeg 3.4 was cut here -------- 8< ---------
   19 
   20 2017-09-28 - b6cf66ae1c - lavc 57.106.104 - avcodec.h
   21   Add AV_PKT_DATA_A53_CC packet side data, to export closed captions
   22 
   23 2017-09-27 - 7aa6b8a68f - lavu 55.77.101 / lavu 55.31.1 - frame.h
   24   Allow passing the value of 0 (meaning "automatic") as the required alignment
   25   to av_frame_get_buffer().
   26 
   27 2017-09-27 - 522f877086 - lavu 55.77.100 / lavu 55.31.0 - cpu.h
   28   Add av_cpu_max_align() for querying maximum required data alignment.
   29 
   30 2017-09-26 - b1cf151c4d - lavc 57.106.102 - avcodec.h
   31   Deprecate AVCodecContext.refcounted_frames. This was useful for deprecated
   32   API only (avcodec_decode_video2/avcodec_decode_audio4). The new decode APIs
   33   (avcodec_send_packet/avcodec_receive_frame) always work with reference
   34   counted frames.
   35 
   36 2017-09-21 - 6f15f1cdc8 - lavu 55.76.100 / 56.6.0 - pixdesc.h
   37   Add av_color_range_from_name(), av_color_primaries_from_name(),
   38   av_color_transfer_from_name(), av_color_space_from_name(), and
   39   av_chroma_location_from_name().
   40 
   41 2017-09-13 - 82342cead1 - lavc 57.106.100 - avcodec.h
   42   Add AV_PKT_FLAG_TRUSTED.
   43 
   44 2017-09-13 - 9cb23cd9fe - lavu 55.75.100 - hwcontext.h hwcontext_drm.h
   45   Add AV_HWDEVICE_TYPE_DRM and implementation.
   46 
   47 2017-09-08 - 5ba2aef6ec - lavfi 6.103.100 - buffersrc.h
   48   Add av_buffersrc_close().
   49 
   50 2017-09-04 - 6cadbb16e9 - lavc 57.105.100 - avcodec.h
   51   Add AV_HWACCEL_CODEC_CAP_EXPERIMENTAL, replacing the deprecated
   52   HWACCEL_CODEC_CAP_EXPERIMENTAL flag.
   53 
   54 2017-09-01 - 5d76674756 - lavf 57.81.100 - avio.h
   55   Add avio_read_partial().
   56 
   57 2017-09-01 - xxxxxxx - lavf 57.80.100 / 57.11.0 - avio.h
   58   Add avio_context_free(). From now on it must be used for freeing AVIOContext.
   59 
   60 2017-08-08 - 1460408703 - lavu 55.74.100 - pixdesc.h
   61   Add AV_PIX_FMT_FLAG_FLOAT pixel format flag.
   62 
   63 2017-08-08 - 463b81de2b - lavu 55.72.100 - imgutils.h
   64   Add av_image_fill_black().
   65 
   66 2017-08-08 - caa12027ba - lavu 55.71.100 - frame.h
   67   Add av_frame_apply_cropping().
   68 
   69 2017-07-25 - 24de4fddca - lavu 55.69.100 - frame.h
   70   Add AV_FRAME_DATA_ICC_PROFILE side data type.
   71 
   72 2017-06-27 - 70143a3954 - lavc 57.100.100 - avcodec.h
   73   DXVA2 and D3D11 hardware accelerated decoding now supports the new hwaccel API,
   74   which can create the decoder context and allocate hardware frame automatically.
   75   See AVCodecContext.hw_device_ctx and AVCodecContext.hw_frames_ctx. For D3D11,
   76   the new AV_PIX_FMT_D3D11 pixfmt must be used with the new API.
   77 
   78 2017-06-27 - 3303511f33 - lavu 56.67.100 - hwcontext.h
   79   Add AV_HWDEVICE_TYPE_D3D11VA and AV_PIX_FMT_D3D11.
   80 
   81 2017-06-24 - 09891c5391 - lavf 57.75.100 - avio.h
   82   Add AVIO_DATA_MARKER_FLUSH_POINT to signal preferred flush points to aviobuf.
   83 
   84 2017-06-14 - d59c6a3aeb - lavu 55.66.100 - hwcontext.h
   85   av_hwframe_ctx_create_derived() now takes some AV_HWFRAME_MAP_* combination
   86   as its flags argument (which was previously unused).
   87 
   88 2017-06-14 - 49ae8a5e87 - lavc 57.99.100 - avcodec.h
   89   Add AV_HWACCEL_FLAG_ALLOW_PROFILE_MISMATCH.
   90 
   91 2017-06-14 - 0b1794a43e - lavu 55.65.100 - hwcontext.h
   92   Add AV_HWDEVICE_TYPE_NONE, av_hwdevice_find_type_by_name(),
   93   av_hwdevice_get_type_name() and av_hwdevice_iterate_types().
   94 
   95 2017-06-14 - b22172f6f3 - lavu 55.64.100 - hwcontext.h
   96   Add av_hwdevice_ctx_create_derived().
   97 
   98 2017-05-15 - 532b23f079 - lavc 57.96.100 - avcodec.h
   99   VideoToolbox hardware-accelerated decoding now supports the new hwaccel API,
  100   which can create the decoder context and allocate hardware frames automatically.
  101   See AVCodecContext.hw_device_ctx and AVCodecContext.hw_frames_ctx.
  102 
  103 2017-05-15 - 532b23f079 - lavu 57.63.100 - hwcontext.h
  104   Add AV_HWDEVICE_TYPE_VIDEOTOOLBOX and implementation.
  105 
  106 2017-05-08 - f089e02fa2 - lavc 57.95.100 / 57.31.0 - avcodec.h
  107   Add AVCodecContext.apply_cropping to control whether cropping
  108   is handled by libavcodec or the caller.
  109 
  110 2017-05-08 - a47bd5d77e - lavu 55.62.100 / 55.30.0 - frame.h
  111   Add AVFrame.crop_left/right/top/bottom fields for attaching cropping
  112   information to video frames.
  113 
  114 2017-xx-xx - xxxxxxxxxx
  115   Change av_sha_update(), av_sha512_update() and av_md5_sum()/av_md5_update() length
  116   parameter type to size_t at next major bump.
  117 
  118 2017-05-05 - c0f17a905f - lavc 57.94.100 - avcodec.h
  119   The cuvid decoders now support AVCodecContext.hw_device_ctx, which removes
  120   the requirement to set an incomplete AVCodecContext.hw_frames_ctx only to
  121   set the Cuda device handle.
  122 
  123 2017-04-11 - 8378466507 - lavu 55.61.100 - avstring.h
  124   Add av_strireplace().
  125 
  126 2016-04-06 - 157e57a181 - lavc 57.92.100 - avcodec.h
  127   Add AV_PKT_DATA_CONTENT_LIGHT_LEVEL packet side data.
  128 
  129 2016-04-06 - b378f5bd64 - lavu 55.60.100 - mastering_display_metadata.h
  130   Add AV_FRAME_DATA_CONTENT_LIGHT_LEVEL value, av_content_light_metadata_alloc()
  131   and av_content_light_metadata_create_side_data() API, and AVContentLightMetadata
  132   type to export content light level video properties.
  133 
  134 2017-03-31 - 9033e8723c - lavu 55.57.100 - spherical.h
  135   Add av_spherical_projection_name().
  136   Add av_spherical_from_name().
  137 
  138 2017-03-30 - 4cda23f1f1 - lavu 55.53.100 / 55.27.0 - hwcontext.h
  139   Add av_hwframe_map() and associated AV_HWFRAME_MAP_* flags.
  140   Add av_hwframe_ctx_create_derived().
  141 
  142 2017-03-29 - bfdcdd6d82 - lavu 55.52.100 - avutil.h
  143   add av_fourcc_make_string() function and av_fourcc2str() macro to replace
  144   av_get_codec_tag_string() from lavc.
  145 
  146 2017-03-27 - ddef3d902f - lavf 57.68.100 - avformat.h
  147   Deprecate that demuxers export the stream rotation angle in AVStream.metadata
  148   (via an entry named "rotate"). Use av_stream_get_side_data() with
  149   AV_PKT_DATA_DISPLAYMATRIX instead, and read the rotation angle with
  150   av_display_rotation_get(). The same is done for muxing. Instead of adding a
  151   "rotate" entry to AVStream.metadata, AV_PKT_DATA_DISPLAYMATRIX side data has
  152   to be added to the AVStream.
  153 
  154 2017-03-23 - 7e4ba776a2 - lavc 57.85.101 - avcodec.h
  155   vdpau hardware accelerated decoding now supports the new hwaccel API, which
  156   can create the decoder context and allocate hardware frame automatically.
  157   See AVCodecContext.hw_device_ctx and AVCodecContext.hw_frames_ctx.
  158 
  159 2017-03-23 - 156bd8278f - lavc 57.85.100 - avcodec.h
  160   Add AVCodecContext.hwaccel_flags field. This will control some hwaccels at
  161   a later point.
  162 
  163 2017-03-21 - fc9f14c7de - lavf 57.67.100 / 57.08.0 - avio.h
  164   Add AVIO_SEEKABLE_TIME flag.
  165 
  166 2017-03-21 - d682ae70b4 - lavf 57.66.105, lavc 57.83.101 - avformat.h, avcodec.h
  167   Deprecate AVFMT_FLAG_KEEP_SIDE_DATA. It will be ignored after the next major
  168   bump, and libavformat will behave as if it were always set.
  169   Deprecate av_packet_merge_side_data() and av_packet_split_side_data().
  170 
  171 2016-03-20 - 8200b16a9c - lavu 55.50.100 / 55.21.0 - imgutils.h
  172   Add av_image_copy_uc_from(), a version of av_image_copy() for copying
  173   from GPU mapped memory.
  174 
  175 2017-03-20 - 9c2436e - lavu 55.49.100 - pixdesc.h
  176   Add AV_PIX_FMT_FLAG_BAYER pixel format flag.
  177 
  178 2017-03-18 - 3796fb2692 - lavfi 6.77.100 - avfilter.h
  179   Deprecate AVFilterGraph.resample_lavr_opts
  180   It's never been used by avfilter nor passed to anything.
  181 
  182 2017-02-10 - 1b7ffddb3a - lavu 55.48.100 / 55.33.0 - spherical.h
  183   Add AV_SPHERICAL_EQUIRECTANGULAR_TILE, av_spherical_tile_bounds(),
  184   and projection-specific properties (bound_left, bound_top, bound_right,
  185   bound_bottom, padding) to AVSphericalMapping.
  186 
  187 2017-03-02 - ade7c1a232 - lavc 57.81.104 - videotoolbox.h
  188   AVVideotoolboxContext.cv_pix_fmt_type can now be set to 0 to output the
  189   native decoder format. (The default value is not changed.)
  190 
  191 2017-03-02 - 554bc4eea8 - lavu 55.47.101, lavc 57.81.102, lavf 57.66.103
  192   Remove requirement to use AVOption or accessors to access certain fields
  193   in AVFrame, AVCodecContext, and AVFormatContext that were previously
  194   documented as "no direct access" allowed.
  195 
  196 2017-02-13 - c1a5fca06f - lavc 57.80.100 - avcodec.h
  197   Add AVCodecContext.hw_device_ctx.
  198 
  199 2017-02-11 - e3af49b14b - lavu 55.47.100 - frame.h
  200   Add AVFrame.opaque_ref.
  201 
  202 2017-01-31 - 2eab48177d - lavu 55.46.100 / 55.20.0 - cpu.h
  203   Add AV_CPU_FLAG_SSSE3SLOW.
  204 
  205 2017-01-24 - c4618f842a - lavu 55.45.100 - channel_layout.h
  206   Add av_get_extended_channel_layout()
  207 
  208 2017-01-22 - 76c5a69e26 - lavu 55.44.100 - lfg.h
  209   Add av_lfg_init_from_data().
  210 
  211 2017-01-17 - 2a4a8653b6 - lavc 57.74.100 - vaapi.h
  212   Deprecate struct vaapi_context and the vaapi.h installed header.
  213   Callers should set AVCodecContext.hw_frames_ctx instead.
  214 
  215 2017-01-12 - dbe9dbed31 - lavfi 6.69.100 - buffersink.h
  216   Add av_buffersink_get_*() functions.
  217 
  218 2017-01-06 - 9488032e10 - lavf 57.62.100 - avio.h
  219   Add avio_get_dyn_buf()
  220 
  221 2016-12-10 - f542b152aa - lavu 55.43.100 - imgutils.h
  222   Add av_image_check_size2()
  223 
  224 2016-12-07 - e7a6f8c972 - lavc 57.67.100 / 57.29.0 - avcodec.h
  225   Add AV_PKT_DATA_SPHERICAL packet side data to export AVSphericalMapping
  226   information from containers.
  227 
  228 2016-12-07 - 8f58ecc344 - lavu 55.42.100 / 55.30.0 - spherical.h
  229   Add AV_FRAME_DATA_SPHERICAL value, av_spherical_alloc() API and
  230   AVSphericalMapping type to export and describe spherical video properties.
  231 
  232 2016-11-18 - 2ab50647ff - lavf 57.58.100 - avformat.h
  233   Add av_stream_add_side_data().
  234 
  235 2016-11-13 - 775a8477b7 - lavu 55.39.100 - hwcontext_vaapi.h
  236   Add AV_VAAPI_DRIVER_QUIRK_ATTRIB_MEMTYPE.
  237 
  238 2016-11-13 - a8d51bb424 - lavu 55.38.100 - hwcontext_vaapi.h
  239   Add driver quirks field to VAAPI-specific hwdevice and enum with
  240   members AV_VAAPI_DRIVER_QUIRK_* to represent its values.
  241 
  242 2016-11-10 - 638b216d4f - lavu 55.36.100 - pixfmt.h
  243   Add AV_PIX_FMT_GRAY12(LE/BE).
  244 
  245 -------- 8< --------- FFmpeg 3.2 was cut here -------- 8< ---------
  246 
  247 2016-10-24 - 73ead47 - lavf 57.55.100 - avformat.h
  248   Add AV_DISPOSITION_TIMED_THUMBNAILS
  249 
  250 2016-10-24 - a246fef - lavf 57.54.100 - avformat.h
  251   Add avformat_init_output() and AVSTREAM_INIT_IN_ macros
  252 
  253 2016-10-22 - f5495c9 - lavu 55.33.100 - avassert.h
  254   Add av_assert0_fpu() / av_assert2_fpu()
  255 
  256 2016-10-07 - 3f9137c / 32c8359 - lavc 57.61.100 / 57.24.0 - avcodec.h
  257   Decoders now export the frame timestamp as AVFrame.pts. It was
  258   previously exported as AVFrame.pkt_pts, which is now deprecated.
  259 
  260   Note: When decoding, AVFrame.pts uses the stream/packet timebase,
  261   and not the codec timebase.
  262 
  263 2016-09-28 - eba0414 - lavu 55.32.100 / 55.16.0 - hwcontext.h hwcontext_qsv.h
  264   Add AV_HWDEVICE_TYPE_QSV and a new installed header with QSV-specific
  265   hwcontext definitions.
  266 
  267 2016-09-26 - 32c25f0 - lavc 57.59.100 / 57.23.0 - avcodec.h
  268   AVCodecContext.hw_frames_ctx now may be used by decoders.
  269 
  270 2016-09-27 - f0b6f72 - lavf 57.51.100 - avformat.h
  271   Add av_stream_get_codec_timebase()
  272 
  273 2016-09-27 - 23c0779 - lswr 2.2.100 - swresample.h
  274   Add swr_build_matrix().
  275 
  276 2016-09-23 - 30d3e36 - lavc 57.58.100 - avcodec.h
  277   Add AV_CODEC_CAP_AVOID_PROBING codec capability flag.
  278 
  279 2016-09-14 - ae1dd0c - lavf 57.49.100 - avformat.h
  280   Add avformat_transfer_internal_stream_timing_info helper to help with stream
  281   copy.
  282 
  283 2016-08-29 - 4493390 - lavfi 6.58.100 - avfilter.h
  284   Add AVFilterContext.nb_threads.
  285 
  286 2016-08-15 - c3c4c72 - lavc 57.53.100 - avcodec.h
  287   Add trailing_padding to AVCodecContext to match the corresponding
  288   field in AVCodecParameters.
  289 
  290 2016-08-15 - b746ed7 - lavc 57.52.100 - avcodec.h
  291   Add a new API for chained BSF filters and passthrough (null) BSF --
  292   av_bsf_list_alloc(), av_bsf_list_free(), av_bsf_list_append(),
  293   av_bsf_list_append2(), av_bsf_list_finalize(), av_bsf_list_parse_str()
  294   and av_bsf_get_null_filter().
  295 
  296 2016-08-04 - 82a33c8 - lavf 57.46.100 - avformat.h
  297   Add av_get_frame_filename2()
  298 
  299 2016-07-09 - 775389f / 90f469a - lavc 57.50.100 / 57.20.0 - avcodec.h
  300   Add FF_PROFILE_H264_MULTIVIEW_HIGH and FF_PROFILE_H264_STEREO_HIGH.
  301 
  302 2016-06-30 - c1c7e0ab - lavf 57.41.100 - avformat.h
  303   Moved codecpar field from AVStream to the end of the struct, so that
  304   the following private fields are in the same location as in FFmpeg 3.0 (lavf 57.25.100).
  305 
  306 2016-06-30 - 042fb69d - lavu 55.28.100 - frame.h
  307   Moved hw_frames_ctx field from AVFrame to the end of the struct, so that
  308   the following private fields are in the same location as in FFmpeg 3.0 (lavu 55.17.103).
  309 
  310 2016-06-29 - 1a751455 - lavfi 6.47.100 - avfilter.h
  311   Fix accidental ABI breakage in AVFilterContext.
  312   ABI was broken in 8688d3a, lavfi 6.42.100 and released as ffmpeg 3.1.
  313 
  314   Because of this, ffmpeg and ffplay built against lavfi>=6.42.100 will not be
  315   compatible with lavfi>=6.47.100. Potentially also affects other users of
  316   libavfilter if they are using one of the affected fields.
  317 
  318 -------- 8< --------- FFmpeg 3.1 was cut here -------- 8< ---------
  319 
  320 2016-06-26 - 481f320 / 1c9e861 - lavu 55.27.100 / 55.13.0 - hwcontext.h
  321   Add av_hwdevice_ctx_create().
  322 
  323 2016-06-26 - b95534b / e47b8bb - lavc 57.48.101 / 57.19.1 - avcodec.h
  324   Adjust values for JPEG 2000 profiles.
  325 
  326 2016-06-23 - 5d75e46 / db7968b - lavf 57.40.100 / 57.7.0 - avio.h
  327   Add AVIODataMarkerType, write_data_type, ignore_boundary_point and
  328   avio_write_marker.
  329 
  330 2016-06-23 - abb3cc4 / 0c4468d - lavu 55.26.100 / 55.12.0 - opt.h
  331   Add av_stereo3d_type_name() and av_stereo3d_from_name().
  332 
  333 2016-06-22 - 3689efe / c46db38 - lavu 55.25.100 / 55.11.0 - hwcontext_dxva2.h
  334   Add new installed header with DXVA2-specific hwcontext definitions.
  335 
  336 2016-04-27 - fb91871 - lavu 55.23.100 - log.h
  337   Add a new function av_log_format_line2() which returns number of bytes
  338   written to the target buffer.
  339 
  340 2016-04-21 - 7fc329e - lavc 57.37.100 - avcodec.h
  341   Add a new audio/video encoding and decoding API with decoupled input
  342   and output -- avcodec_send_packet(), avcodec_receive_frame(),
  343   avcodec_send_frame() and avcodec_receive_packet().
  344 
  345 2016-04-17 - af9cac1 / 33d1898 - lavc 57.35.100 / 57.15.0 - avcodec.h
  346   Add a new bitstream filtering API working with AVPackets.
  347   Deprecate the old bitstream filtering API.
  348 
  349 2016-04-14 - 8688d3a / 07a844f - lavfi 6.42.100 / 6.3.0 - avfilter.h
  350   Add AVFilterContext.hw_device_ctx.
  351 
  352 2016-04-14 - 28abb21 / 551c677 - lavu 55.22.100 / 55.9.0 - hwcontext_vaapi.h
  353   Add new installed header with VAAPI-specific hwcontext definitions.
  354 
  355 2016-04-14 - afccfaf / b1f01e8 - lavu 55.21.100 / 55.7.0 - hwcontext.h
  356   Add AVHWFramesConstraints and associated API.
  357 
  358 2016-04-11 - 6f69f7a / 9200514 - lavf 57.33.100 / 57.5.0 - avformat.h
  359   Add AVStream.codecpar, deprecate AVStream.codec.
  360 
  361 2016-04-02 - e8a9b64 - lavu 55.20.100 - base64.h
  362   Add AV_BASE64_DECODE_SIZE(x) macro.
  363 
  364 2016-xx-xx - lavc 57.33.100 / 57.14.0 - avcodec.h
  365   f9b1cf1 / 998e1b8 - Add AVCodecParameters and its related API.
  366   e6053b3 / a806834 - Add av_get_audio_frame_duration2().
  367 
  368 2016-03-11 - 6d8ab35 - lavf/lavc 57.28.101
  369   Add requirement to bitstream filtering API that returned packets with
  370   size == 0 and side_data_elems == 0 are to be skipped by the caller.
  371 
  372 2016-03-04 - 9362973 - lavf 57.28.100
  373   Add protocol blacklisting API
  374 
  375 2016-02-28 - 4dd4d53 - lavc 57.27.101
  376   Validate AVFrame returned by get_buffer2 to have required
  377   planes not NULL and unused planes set to NULL as crashes
  378   and buffer overflow are possible with certain streams if
  379   that is not the case.
  380 
  381 2016-02-26 - 30e7685 - lavc 57.27.100 - avcodec.h
  382   "flags2" decoding option now allows the flag "ass_ro_flush_noop" preventing
  383   the reset of the ASS ReadOrder field on flush. This affects the content of
  384   AVSubtitles.rects[N]->ass when "sub_text_format" is set to "ass" (see
  385   previous entry).
  386 
  387 2016-02-26 - 2941282 - lavc 57.26.100 - avcodec.h
  388   Add a "sub_text_format" subtitles decoding option allowing the values "ass"
  389   (recommended) and "ass_with_timings" (not recommended, deprecated, default).
  390   The default value for this option will change to "ass" at the next major
  391   libavcodec version bump.
  392 
  393   The current default is "ass_with_timings" for compatibility. This means that
  394   all subtitles text decoders currently still output ASS with timings printed
  395   as strings in the AVSubtitles.rects[N]->ass fields.
  396 
  397   Setting "sub_text_format" to "ass" allows a better timing accuracy (ASS
  398   timing is limited to a 1/100 time base, so this is relevant for any subtitles
  399   format needing a bigger one), ease timing adjustments, and prevents the need
  400   of removing the timing from the decoded string yourself. This form is also
  401   known as "the Matroska form". The timing information (start time, duration)
  402   can be found in the AVSubtitles fields.
  403 
  404 2016-02-24 - 7e49cdd / 7b3214d0 - lavc 57.25.100 / 57.13.0 - avcodec.h
  405   Add AVCodecContext.hw_frames_ctx.
  406 
  407 2016-02-24 - 1042402 / b3dd30d - lavfi 6.36.100 / 6.2.0 - avfilter.h
  408   avfilter.h - Add AVFilterLink.hw_frames_ctx.
  409   buffersrc.h - Add AVBufferSrcParameters and functions for handling it.
  410 
  411 2016-02-23 - 14f7a3d - lavc 57.25.100
  412   Add AV_PKT_DATA_MPEGTS_STREAM_ID for exporting the MPEGTS stream ID.
  413 
  414 2016-02-18 - 08acab8 - lavu 55.18.100 - audio_fifo.h
  415   Add av_audio_fifo_peek_at().
  416 
  417 2016-xx-xx - lavu 55.18.100 / 55.6.0
  418   26abd51 / 721a4ef buffer.h - Add av_buffer_pool_init2().
  419   1a70878 / 89923e4 hwcontext.h - Add a new installed header hwcontext.h with a new API
  420                         for handling hwaccel frames.
  421   6992276 / ad884d1 hwcontext_cuda.h - Add a new installed header hwcontext_cuda.h with
  422                              CUDA-specific hwcontext definitions.
  423   d779d8d / a001ce3 hwcontext_vdpau.h - Add a new installed header hwcontext_vdpau.h with
  424                               VDPAU-specific hwcontext definitions.
  425   63c3e35 / 7bc780c pixfmt.h - Add AV_PIX_FMT_CUDA.
  426 
  427 -------- 8< --------- FFmpeg 3.0 was cut here -------- 8< ---------
  428 
  429 2016-02-10 - bc9a596 / 9f61abc - lavf 57.25.100 / 57.3.0 - avformat.h
  430   Add AVFormatContext.opaque, io_open and io_close, allowing custom IO
  431 
  432 2016-02-01 - 1dba837 - lavf 57.24.100 - avformat.h, avio.h
  433   Add protocol_whitelist to AVFormatContext, AVIOContext
  434 
  435 2016-01-31 - 66e9d2f - lavu 55.17.100 - frame.h
  436   Add AV_FRAME_DATA_GOP_TIMECODE for exporting MPEG1/2 GOP timecodes.
  437 
  438 2016-01-01 - 5e8b053 / 2c68113 - lavc 57.21.100 / 57.12.0 - avcodec.h
  439   Add AVCodecDescriptor.profiles and avcodec_profile_name().
  440 
  441 2015-12-28 - 1f9139b - lavf 57.21.100 - avformat.h
  442   Add automatic bitstream filtering; add av_apply_bitstream_filters()
  443 
  444 2015-12-22 - 39a09e9 - lavfi 6.21.101 - avfilter.h
  445   Deprecate avfilter_link_set_closed().
  446   Applications are not supposed to mess with links,
  447   they should close the sinks.
  448 
  449 2015-12-17 - lavc 57.18.100 / 57.11.0 - avcodec.h dirac.h
  450   xxxxxxx - Add av_packet_add_side_data().
  451   xxxxxxx - Add AVCodecContext.coded_side_data.
  452   xxxxxxx - Add AVCPBProperties API.
  453   xxxxxxx - Add a new public header dirac.h containing
  454             av_dirac_parse_sequence_header()
  455 
  456 2015-12-11 - 676a93f - lavf 57.20.100 - avformat.h
  457   Add av_program_add_stream_index()
  458 
  459 2015-11-29 - 93fb4a4 - lavc 57.16.101 - avcodec.h
  460   Deprecate rtp_callback without replacement, i.e. it won't be possible to
  461   get image slices before the full frame is encoded any more. The libavformat
  462   rtpenc muxer can still be used for RFC-2190 packetization.
  463 
  464 2015-11-22 - fe20e34 - lavc 57.16.100 - avcodec.h
  465   Add AV_PKT_DATA_FALLBACK_TRACK for making fallback associations between
  466   streams.
  467 
  468 2015-11-22 - ad317c9 - lavf 57.19.100 - avformat.h
  469   Add av_stream_new_side_data().
  470 
  471 2015-11-22 - e12f403 - lavu 55.8.100 - xtea.h
  472     Add av_xtea_le_init and av_xtea_le_crypt
  473 
  474 2015-11-18 - lavu 55.7.100 - mem.h
  475   Add av_fast_mallocz()
  476 
  477 2015-10-29 - lavc 57.12.100 / 57.8.0 - avcodec.h
  478   xxxxxx - Deprecate av_free_packet(). Use av_packet_unref() as replacement,
  479            it resets the packet in a more consistent way.
  480   xxxxxx - Deprecate av_dup_packet(), it is a no-op for most cases.
  481            Use av_packet_ref() to make a non-refcounted AVPacket refcounted.
  482   xxxxxx - Add av_packet_alloc(), av_packet_clone(), av_packet_free().
  483            They match the AVFrame functions with the same name.
  484 
  485 2015-10-27 - 1e477a9 - lavu 55.5.100 - cpu.h
  486   Add AV_CPU_FLAG_AESNI.
  487 
  488 2015-10-22 - ee573b4 / a17a766 - lavc 57.9.100 / 57.5.0 - avcodec.h
  489   Add data and linesize array to AVSubtitleRect, to be used instead of
  490   the ones from the embedded AVPicture.
  491 
  492 2015-10-22 - 866a417 / dc923bc - lavc 57.8.100 / 57.0.0 - qsv.h
  493   Add an API for allocating opaque surfaces.
  494 
  495 2015-10-15 - 2c2d162 - lavf 57.4.100
  496   Remove the latm demuxer that was a duplicate of the loas demuxer.
  497 
  498 2015-10-14 - b994788 / 11c5f43 - lavu 55.4.100 / 55.2.0 - dict.h
  499   Change return type of av_dict_copy() from void to int, so that a proper
  500   error code can be reported.
  501 
  502 2015-09-29 - b01891a / 948f3c1 - lavc 57.3.100 / 57.2.0 - avcodec.h
  503   Change type of AVPacket.duration from int to int64_t.
  504 
  505 2015-09-17 - 7c46f24 / e3d4784 - lavc 57.3.100 / 57.2.0 - d3d11va.h
  506   Add av_d3d11va_alloc_context(). This function must from now on be used for
  507   allocating AVD3D11VAContext.
  508 
  509 2015-09-15 - lavf 57.2.100 - avformat.h
  510   probesize and max_analyze_duration switched to 64bit, both
  511   are only accessible through AVOptions
  512 
  513 2015-09-15 - lavf 57.1.100 - avformat.h
  514   bit_rate was changed to 64bit, make sure you update any
  515   printf() or other type sensitive code
  516 
  517 2015-09-15 - lavc 57.2.100 - avcodec.h
  518   bit_rate/rc_max_rate/rc_min_rate were changed to 64bit, make sure you update
  519   any printf() or other type sensitive code
  520 
  521 2015-09-07 - lavu 55.0.100 / 55.0.0
  522   c734b34 / b8b5d82 - Change type of AVPixFmtDescriptor.flags from uint8_t to uint64_t.
  523   f53569a / 6b3ef7f - Change type of AVComponentDescriptor fields from uint16_t to int
  524             and drop bit packing.
  525   151aa2e / 2268db2 - Add step, offset, and depth to AVComponentDescriptor to replace
  526             the deprecated step_minus1, offset_plus1, and depth_minus1.
  527 
  528 -------- 8< --------- FFmpeg 2.8 was cut here -------- 8< ---------
  529 
  530 2015-08-27 - 1dd854e1 - lavc 56.58.100 - vaapi.h
  531   Deprecate old VA-API context (vaapi_context) fields that were only
  532   set and used by libavcodec. They are all managed internally now.
  533 
  534 2015-08-19 - 9f8e57ef - lavu 54.31.100 - pixfmt.h
  535   Add a unique pixel format for VA-API (AV_PIX_FMT_VAAPI) that
  536   indicates the nature of the underlying storage: a VA surface. This
  537   yields the same value as AV_PIX_FMT_VAAPI_VLD.
  538   Deprecate old VA-API related pixel formats: AV_PIX_FMT_VAAPI_MOCO,
  539   AV_PIX_FMT_VAAPI_IDCT, AV_PIX_FMT_VAAPI_VLD.
  540 
  541 2015-08-02 - lavu 54.30.100 / 54.17.0
  542   9ed59f1 / 7a7df34c -  Add av_blowfish_alloc().
  543   a130ec9 / ae365453 -  Add av_rc4_alloc().
  544   9ca1997 / 5d8bea3b -  Add av_xtea_alloc().
  545   3cf08e9 / d9e8b47e -  Add av_des_alloc().
  546 
  547 2015-07-27 - lavc 56.56.100 / 56.35.0 - avcodec.h
  548   94d68a4 / 7c6eb0a1 - Rename CODEC_FLAG* defines to AV_CODEC_FLAG*.
  549   444e987 / def97856 - Rename CODEC_CAP_* defines to AV_CODEC_CAP_*.
  550   29d147c / 059a9348 - Rename FF_INPUT_BUFFER_PADDING_SIZE and FF_MIN_BUFFER_SIZE
  551               to AV_INPUT_BUFFER_PADDING_SIZE and AV_INPUT_BUFFER_MIN_SIZE.
  552 
  553 2015-07-22 - c40ecff - lavc 56.51.100 - avcodec.h
  554   Add AV_PKT_DATA_QUALITY_STATS to export the quality value, PSNR, and pict_type
  555   of an AVPacket.
  556 
  557 2015-07-16 - 8dad213 - lavc 56.49.100
  558   Add av_codec_get_codec_properties(), FF_CODEC_PROPERTY_LOSSLESS
  559   and FF_CODEC_PROPERTY_CLOSED_CAPTIONS
  560 
  561 2015-07-03 - d563e13 / 83212943 - lavu 54.28.100 / 56.15.0
  562   Add av_version_info().
  563 
  564 -------- 8< --------- FFmpeg 2.7 was cut here -------- 8< ---------
  565 
  566 2015-06-04 - cc17b43 - lswr  1.2.100
  567   Add swr_get_out_samples()
  568 
  569 2015-05-27 - c312bfa - lavu 54.26.100 - cpu.h
  570   Add AV_CPU_FLAG_AVXSLOW.
  571 
  572 2015-05-26 - 1fb9b2a - lavu 54.25.100 - rational.h
  573   Add av_q2intfloat().
  574 
  575 2015-05-13 - cc48409 / e7c5e17 - lavc 56.39.100 / 56.23.0
  576   Add av_vda_default_init2.
  577 
  578 2015-05-11 - 541d75f - lavf 56.33.100 - avformat.h
  579   Add AVOpenCallback AVFormatContext.open_cb
  580 
  581 2015-05-07 - a7dd933 - 56.38.100 - avcodec.h
  582   Add av_packet_side_data_name().
  583 
  584 2015-05-07 - 01e59d4 - 56.37.102 - avcodec.h
  585   Add FF_PROFILE_VP9_2 and FF_PROFILE_VP9_3.
  586 
  587 2015-05-04 - 079b7f6 - 56.37.100 - avcodec.h
  588   Add FF_PROFILE_VP9_0 and FF_PROFILE_VP9_1.
  589 
  590 2015-04-22 - 748d481 - lavf 56.31.100 - avformat.h
  591   Add AVFMT_FLAG_FAST_SEEK flag. Some formats (initially mp3) use it to enable
  592   fast, but inaccurate seeking.
  593 
  594 2015-04-20 - 8e8219e / c253340 - lavu 54.23.100 / 54.12.0 - log.h
  595   Add AV_LOG_TRACE for extremely verbose debugging.
  596 
  597 2015-04-02 - 26e0e393 - lavf 56.29.100 - avio.h
  598   Add AVIODirEntryType.AVIO_ENTRY_SERVER.
  599   Add AVIODirEntryType.AVIO_ENTRY_SHARE.
  600   Add AVIODirEntryType.AVIO_ENTRY_WORKGROUP.
  601 
  602 2015-03-31 - 3188696 - lavu 54.22.100 - avstring.h
  603   Add av_append_path_component()
  604 
  605 2015-03-27 - 184084c - lavf 56.27.100 - avio.h url.h
  606   New directory listing API.
  607 
  608   Add AVIODirEntryType enum.
  609   Add AVIODirEntry, AVIODirContext structures.
  610   Add avio_open_dir(), avio_read_dir(), avio_close_dir(), avio_free_directory_entry().
  611   Add ff_alloc_dir_entry().
  612   Extend URLProtocol with url_open_dir(), url_read_dir(), url_close_dir().
  613 
  614 2015-03-29 - 268ff17 / c484561 - lavu 54.21.100 / 54.10.0 - pixfmt.h
  615   Add AV_PIX_FMT_MMAL for MMAL hardware acceleration.
  616 
  617 2015-03-19 - 11fe56c - 56.29.100 / lavc 56.22.0
  618   Add FF_PROFILE_DTS_EXPRESS.
  619 
  620 -------- 8< --------- FFmpeg 2.6 was cut here -------- 8< ---------
  621 
  622 2015-03-04 - cca4476 - lavf 56.25.100
  623   Add avformat_flush()
  624 
  625 2015-03-03 - 81a9126 - lavf 56.24.100
  626   Add avio_put_str16be()
  627 
  628 2015-02-19 - 560eb71 / 31d2039 - lavc 56.23.100 / 56.13.0
  629   Add width, height, coded_width, coded_height and format to
  630   AVCodecParserContext.
  631 
  632 2015-02-19 - e375511 / 5b1d9ce - lavu 54.19.100 / 54.9.0
  633   Add AV_PIX_FMT_QSV for QSV hardware acceleration.
  634 
  635 2015-02-14 - ba22295 - lavc 56.21.102
  636   Deprecate VIMA decoder.
  637 
  638 2015-01-27 - 62a82c6 / 728685f - lavc 56.21.100 / 56.12.0, lavu 54.18.100 / 54.8.0 - avcodec.h, frame.h
  639   Add AV_PKT_DATA_AUDIO_SERVICE_TYPE and AV_FRAME_DATA_AUDIO_SERVICE_TYPE for
  640   storing the audio service type as side data.
  641 
  642 2015-01-16 - a47c933 - lavf 56.19.100 - avformat.h
  643   Add data_codec and data_codec_id for storing codec of data stream
  644 
  645 2015-01-11 - 007c33d - lavd 56.4.100 - avdevice.h
  646   Add avdevice_list_input_sources().
  647   Add avdevice_list_output_sinks().
  648 
  649 2014-12-25 - d7aaeea / c220a60 - lavc 56.19.100 / 56.10.0 - vdpau.h
  650   Add av_vdpau_get_surface_parameters().
  651 
  652 2014-12-25 - ddb9a24 / 6c99c92 - lavc 56.18.100 / 56.9.0 - avcodec.h
  653   Add AV_HWACCEL_FLAG_ALLOW_HIGH_DEPTH flag to av_vdpau_bind_context().
  654 
  655 2014-12-25 - d16079a / 57b6704 - lavc 56.17.100 / 56.8.0 - avcodec.h
  656   Add AVCodecContext.sw_pix_fmt.
  657 
  658 2014-12-04 - 6e9ac02 - lavc 56.14.100 - dv_profile.h
  659   Add av_dv_codec_profile2().
  660 
  661 -------- 8< --------- FFmpeg 2.5 was cut here -------- 8< ---------
  662 
  663 2014-11-21 - ab922f9 - lavu 54.15.100 - dict.h
  664    Add av_dict_get_string().
  665 
  666 2014-11-18 - a54a51c - lavu 54.14.100 - float_dsp.h
  667   Add avpriv_float_dsp_alloc().
  668 
  669 2014-11-16 - 6690d4c3 - lavf 56.13.100 - avformat.h
  670   Add AVStream.recommended_encoder_configuration with accessors.
  671 
  672 2014-11-16 - bee5844d - lavu 54.13.100 - opt.h
  673   Add av_opt_serialize().
  674 
  675 2014-11-16 - eec69332 - lavu 54.12.100 - opt.h
  676   Add av_opt_is_set_to_default().
  677 
  678 2014-11-06 - 44fa267 / 5e80fb7 - lavc 56.11.100 / 56.6.0 - vorbis_parser.h
  679   Add a public API for parsing vorbis packets.
  680 
  681 2014-10-15 - 17085a0 / 7ea1b34 - lavc 56.7.100 / 56.5.0 - avcodec.h
  682   Replace AVCodecContext.time_base used for decoding
  683   with AVCodecContext.framerate.
  684 
  685 2014-10-15 - 51c810e / d565fef1 - lavc 56.6.100 / 56.4.0 - avcodec.h
  686   Add AV_HWACCEL_FLAG_IGNORE_LEVEL flag to av_vdpau_bind_context().
  687 
  688 2014-10-13 - da21895 / 2df0c32e - lavc 56.5.100 / 56.3.0 - avcodec.h
  689   Add AVCodecContext.initial_padding. Deprecate the use of AVCodecContext.delay
  690   for audio encoding.
  691 
  692 2014-10-08 - bb44f7d / 5a419b2 - lavu 54.10.100 / 54.4.0 - pixdesc.h
  693   Add API to return the name of frame and context color properties.
  694 
  695 2014-10-06 - a61899a / e3e158e - lavc 56.3.100 / 56.2.0 - vdpau.h
  696   Add av_vdpau_bind_context(). This function should now be used for creating
  697   (or resetting) a AVVDPAUContext instead of av_vdpau_alloc_context().
  698 
  699 2014-10-02 - cdd6f05 - lavc 56.2.100 - avcodec.h
  700 2014-10-02 - cdd6f05 - lavu 54.9.100 - frame.h
  701   Add AV_FRAME_DATA_SKIP_SAMPLES. Add lavc CODEC_FLAG2_SKIP_MANUAL and
  702   AVOption "skip_manual", which makes lavc export skip information via
  703   AV_FRAME_DATA_SKIP_SAMPLES AVFrame side data, instead of skipping and
  704   discarding samples automatically.
  705 
  706 2014-10-02 - 0d92b0d - lavu 54.8.100 - avstring.h
  707   Add av_match_list()
  708 
  709 2014-09-24 - ac68295 - libpostproc 53.1.100
  710   Add visualization support
  711 
  712 2014-09-19 - 6edd6a4 - lavc 56.1.101 - dv_profile.h
  713   deprecate avpriv_dv_frame_profile2(), which was made public by accident.
  714 
  715 
  716 -------- 8< --------- FFmpeg 2.4 was cut here -------- 8< ---------
  717 
  718 2014-08-25 - 215db29 / b263f8f - lavf 56.3.100 / 56.3.0 - avformat.h
  719   Add AVFormatContext.max_ts_probe.
  720 
  721 2014-08-28 - f30a815 / 9301486 - lavc 56.1.100 / 56.1.0 - avcodec.h
  722   Add AV_PKT_DATA_STEREO3D to export container-level stereo3d information.
  723 
  724 2014-08-23 - 8fc9bd0 - lavu 54.7.100 - dict.h
  725   AV_DICT_DONT_STRDUP_KEY and AV_DICT_DONT_STRDUP_VAL arguments are now
  726   freed even on error. This is consistent with the behaviour all users
  727   of it we could find expect.
  728 
  729 2014-08-21 - 980a5b0 - lavu 54.6.100 - frame.h motion_vector.h
  730   Add AV_FRAME_DATA_MOTION_VECTORS side data and AVMotionVector structure
  731 
  732 2014-08-16 - b7d5e01 - lswr 1.1.100 - swresample.h
  733   Add AVFrame based API
  734 
  735 2014-08-16 - c2829dc - lavu 54.4.100 - dict.h
  736   Add av_dict_set_int helper function.
  737 
  738 2014-08-13 - c8571c6 / 8ddc326 - lavu 54.3.100 / 54.3.0 - mem.h
  739   Add av_strndup().
  740 
  741 2014-08-13 - 2ba4577 / a8c104a - lavu 54.2.100 / 54.2.0 - opt.h
  742   Add av_opt_get_dict_val/set_dict_val with AV_OPT_TYPE_DICT to support
  743   dictionary types being set as options.
  744 
  745 2014-08-13 - afbd4b8 - lavf 56.01.0 - avformat.h
  746   Add AVFormatContext.event_flags and AVStream.event_flags for signaling to
  747   the user when events happen in the file/stream.
  748 
  749 2014-08-10 - 78eaaa8 / fb1ddcd - lavr 2.1.0 - avresample.h
  750   Add avresample_convert_frame() and avresample_config().
  751 
  752 2014-08-10 - 78eaaa8 / fb1ddcd - lavu 54.1.100 / 54.1.0 - error.h
  753   Add AVERROR_INPUT_CHANGED and AVERROR_OUTPUT_CHANGED.
  754 
  755 2014-08-08 - 3841f2a / d35b94f - lavc 55.73.102 / 55.57.4 - avcodec.h
  756   Deprecate FF_IDCT_XVIDMMX define and xvidmmx idct option.
  757   Replaced by FF_IDCT_XVID and xvid respectively.
  758 
  759 2014-08-08 - 5c3c671 - lavf 55.53.100 - avio.h
  760   Add avio_feof() and deprecate url_feof().
  761 
  762 2014-08-07 - bb78903 - lsws 2.1.3 - swscale.h
  763   sws_getContext is not going to be removed in the future.
  764 
  765 2014-08-07 - a561662 / ad1ee5f - lavc 55.73.101 / 55.57.3 - avcodec.h
  766   reordered_opaque is not going to be removed in the future.
  767 
  768 2014-08-02 - 28a2107 - lavu 52.98.100 - pixelutils.h
  769   Add pixelutils API with SAD functions
  770 
  771 2014-08-04 - 6017c98 / e9abafc - lavu 52.97.100 / 53.22.0 - pixfmt.h
  772   Add AV_PIX_FMT_YA16 pixel format for 16 bit packed gray with alpha.
  773 
  774 2014-08-04 - 4c8bc6f / e96c3b8 - lavu 52.96.101 / 53.21.1 - avstring.h
  775   Rename AV_PIX_FMT_Y400A to AV_PIX_FMT_YA8 to better identify the format.
  776   An alias pixel format and color space name are provided for compatibility.
  777 
  778 2014-08-04 - 073c074 / d2962e9 - lavu 52.96.100 / 53.21.0 - pixdesc.h
  779   Support name aliases for pixel formats.
  780 
  781 2014-08-03 - 71d008e / 1ef9e83 - lavc 55.72.101 / 55.57.2 - avcodec.h
  782 2014-08-03 - 71d008e / 1ef9e83 - lavu 52.95.100 / 53.20.0 - frame.h
  783   Deprecate AVCodecContext.dtg_active_format and use side-data instead.
  784 
  785 2014-08-03 - e680c73 - lavc 55.72.100 - avcodec.h
  786   Add get_pixels() to AVDCT
  787 
  788 2014-08-03 - 9400603 / 9f17685 - lavc 55.71.101 / 55.57.1 - avcodec.h
  789   Deprecate unused FF_IDCT_IPP define and ipp avcodec option.
  790   Deprecate unused FF_DEBUG_PTS define and pts avcodec option.
  791   Deprecate unused FF_CODER_TYPE_DEFLATE define and deflate avcodec option.
  792   Deprecate unused FF_DCT_INT define and int avcodec option.
  793   Deprecate unused avcodec option scenechange_factor.
  794 
  795 2014-07-30 - ba3e331 - lavu 52.94.100 - frame.h
  796   Add av_frame_side_data_name()
  797 
  798 2014-07-29 - 80a3a66 / 3a19405 - lavf 56.01.100 / 56.01.0 - avformat.h
  799   Add mime_type field to AVProbeData, which now MUST be initialized in
  800   order to avoid uninitialized reads of the mime_type pointer, likely
  801   leading to crashes.
  802   Typically, this means you will do 'AVProbeData pd = { 0 };' instead of
  803   'AVProbeData pd;'.
  804 
  805 2014-07-29 - 31e0b5d / 69e7336 - lavu 52.92.100 / 53.19.0 - avstring.h
  806   Make name matching function from lavf public as av_match_name().
  807 
  808 2014-07-28 - 2e5c8b0 / c5fca01 - lavc 55.71.100 / 55.57.0 - avcodec.h
  809   Add AV_CODEC_PROP_REORDER to mark codecs supporting frame reordering.
  810 
  811 2014-07-27 - ff9a154 - lavf 55.50.100 - avformat.h
  812   New field int64_t probesize2 instead of deprecated
  813   field int probesize.
  814 
  815 2014-07-27 - 932ff70 - lavc 55.70.100 - avdct.h
  816   Add AVDCT / avcodec_dct_alloc() / avcodec_dct_init().
  817 
  818 2014-07-23 - 8a4c086 - lavf 55.49.100 - avio.h
  819   Add avio_read_to_bprint()
  820 
  821 
  822 -------- 8< --------- FFmpeg 2.3 was cut here -------- 8< ---------
  823 
  824 2014-07-14 - 62227a7 - lavf 55.47.100 - avformat.h
  825   Add av_stream_get_parser()
  826 
  827 2014-07-09 - c67690f / a54f03b - lavu 52.92.100 / 53.18.0 - display.h
  828   Add av_display_matrix_flip() to flip the transformation matrix.
  829 
  830 2014-07-09 - 1b58f13 / f6ee61f - lavc 55.69.100 / 55.56.0 - dv_profile.h
  831   Add a public API for DV profile handling.
  832 
  833 2014-06-20 - 0dceefc / 9e500ef - lavu 52.90.100 / 53.17.0 - imgutils.h
  834   Add av_image_check_sar().
  835 
  836 2014-06-20 - 4a99333 / 874390e - lavc 55.68.100 / 55.55.0 - avcodec.h
  837   Add av_packet_rescale_ts() to simplify timestamp conversion.
  838 
  839 2014-06-18 - ac293b6 / 194be1f - lavf 55.44.100 / 55.20.0 - avformat.h
  840   The proper way for providing a hint about the desired timebase to the muxers
  841   is now setting AVStream.time_base, instead of AVStream.codec.time_base as was
  842   done previously. The old method is now deprecated.
  843 
  844 2014-06-11 - 67d29da - lavc 55.66.101 - avcodec.h
  845   Increase FF_INPUT_BUFFER_PADDING_SIZE to 32 due to some corner cases needing
  846   it
  847 
  848 2014-06-10 - 5482780 - lavf 55.43.100 - avformat.h
  849   New field int64_t max_analyze_duration2 instead of deprecated
  850   int max_analyze_duration.
  851 
  852 2014-05-30 - 00759d7 - lavu 52.89.100 - opt.h
  853   Add av_opt_copy()
  854 
  855 2014-06-01 - 03bb99a / 0957b27 - lavc 55.66.100 / 55.54.0 - avcodec.h
  856   Add AVCodecContext.side_data_only_packets to allow encoders to output packets
  857   with only side data. This option may become mandatory in the future, so all
  858   users are recommended to update their code and enable this option.
  859 
  860 2014-06-01 - 6e8e9f1 / 8c02adc - lavu 52.88.100 / 53.16.0 - frame.h, pixfmt.h
  861   Move all color-related enums (AVColorPrimaries, AVColorSpace, AVColorRange,
  862   AVColorTransferCharacteristic, and AVChromaLocation) inside lavu.
  863   And add AVFrame fields for them.
  864 
  865 2014-05-29 - bdb2e80 / b2d4565 - lavr 1.3.0 - avresample.h
  866   Add avresample_max_output_samples
  867 
  868 2014-05-28 - d858ee7 / 6d21259 - lavf 55.42.100 / 55.19.0 - avformat.h
  869   Add strict_std_compliance and related AVOptions to support experimental
  870   muxing.
  871 
  872 2014-05-26 - 55cc60c - lavu 52.87.100 - threadmessage.h
  873   Add thread message queue API.
  874 
  875 2014-05-26 - c37d179 - lavf 55.41.100 - avformat.h
  876   Add format_probesize to AVFormatContext.
  877 
  878 2014-05-20 - 7d25af1 / c23c96b - lavf 55.39.100 / 55.18.0 - avformat.h
  879   Add av_stream_get_side_data() to access stream-level side data
  880   in the same way as av_packet_get_side_data().
  881 
  882 2014-05-20 - 7336e39 - lavu 52.86.100 - fifo.h
  883   Add av_fifo_alloc_array() function.
  884 
  885 2014-05-19 - ef1d4ee / bddd8cb - lavu 52.85.100 / 53.15.0 - frame.h, display.h
  886   Add AV_FRAME_DATA_DISPLAYMATRIX for exporting frame-level
  887   spatial rendering on video frames for proper display.
  888 
  889 2014-05-19 - ef1d4ee / bddd8cb - lavc 55.64.100 / 55.53.0 - avcodec.h
  890   Add AV_PKT_DATA_DISPLAYMATRIX for exporting packet-level
  891   spatial rendering on video frames for proper display.
  892 
  893 2014-05-19 - 999a99c / a312f71 - lavf 55.38.101 / 55.17.1 - avformat.h
  894   Deprecate AVStream.pts and the AVFrac struct, which was its only use case.
  895   See use av_stream_get_end_pts()
  896 
  897 2014-05-18 - 68c0518 / fd05602 - lavc 55.63.100 / 55.52.0 - avcodec.h
  898   Add avcodec_free_context(). From now on it should be used for freeing
  899   AVCodecContext.
  900 
  901 2014-05-17 - 0eec06e / 1bd0bdc - lavu 52.84.100 / 54.5.0 - time.h
  902   Add av_gettime_relative() av_gettime_relative_is_monotonic()
  903 
  904 2014-05-15 - eacf7d6 / 0c1959b - lavf 55.38.100 / 55.17.0 - avformat.h
  905   Add AVFMT_FLAG_BITEXACT flag. Muxers now use it instead of checking
  906   CODEC_FLAG_BITEXACT on the first stream.
  907 
  908 2014-05-15 - 96cb4c8 - lswr 0.19.100 - swresample.h
  909   Add swr_close()
  910 
  911 2014-05-11 - 14aef38 / 66e6c8a - lavu 52.83.100 / 53.14.0 - pixfmt.h
  912   Add AV_PIX_FMT_VDA for new-style VDA acceleration.
  913 
  914 2014-05-07 - 351f611 - lavu 52.82.100 - fifo.h
  915   Add av_fifo_freep() function.
  916 
  917 2014-05-02 - ba52fb11 - lavu 52.81.100 - opt.h
  918   Add av_opt_set_dict2() function.
  919 
  920 2014-05-01 - e77b985 / a2941c8 - lavc 55.60.103 / 55.50.3 - avcodec.h
  921   Deprecate CODEC_FLAG_MV0. It is replaced by the flag "mv0" in the
  922   "mpv_flags" private option of the mpegvideo encoders.
  923 
  924 2014-05-01 - e40ae8c / 6484149 - lavc 55.60.102 / 55.50.2 - avcodec.h
  925   Deprecate CODEC_FLAG_GMC. It is replaced by the "gmc" private option of the
  926   libxvid encoder.
  927 
  928 2014-05-01 - 1851643 / b2c3171 - lavc 55.60.101 / 55.50.1 - avcodec.h
  929   Deprecate CODEC_FLAG_NORMALIZE_AQP. It is replaced by the flag "naq" in the
  930   "mpv_flags" private option of the mpegvideo encoders.
  931 
  932 2014-05-01 - cac07d0 / 5fcceda - avcodec.h
  933   Deprecate CODEC_FLAG_INPUT_PRESERVED. Its functionality is replaced by passing
  934   reference-counted frames to encoders.
  935 
  936 2014-04-30 - 617e866 - lavu 52.81.100 - pixdesc.h
  937   Add av_find_best_pix_fmt_of_2(), av_get_pix_fmt_loss()
  938   Deprecate avcodec_get_pix_fmt_loss(), avcodec_find_best_pix_fmt_of_2()
  939 
  940 2014-04-29 - 1bf6396 - lavc 55.60.100 - avcodec.h
  941   Add AVCodecDescriptor.mime_types field.
  942 
  943 2014-04-29 - b804eb4 - lavu 52.80.100 - hash.h
  944   Add av_hash_final_bin(), av_hash_final_hex() and av_hash_final_b64().
  945 
  946 2014-03-07 - 8b2a130 - lavc 55.50.0 / 55.53.100 - dxva2.h
  947   Add FF_DXVA2_WORKAROUND_INTEL_CLEARVIDEO for old Intel GPUs.
  948 
  949 2014-04-22 - 502512e /dac7e8a - lavu 53.13.0 / 52.78.100 - avutil.h
  950   Add av_get_time_base_q().
  951 
  952 2014-04-17 - a8d01a7 / 0983d48 - lavu 53.12.0 / 52.77.100 - crc.h
  953   Add AV_CRC_16_ANSI_LE crc variant.
  954 
  955 2014-04-15 - ef818d8 - lavf 55.37.101 - avformat.h
  956   Add av_format_inject_global_side_data()
  957 
  958 2014-04-12 - 4f698be - lavu 52.76.100 - log.h
  959   Add av_log_get_flags()
  960 
  961 2014-04-11 - 6db42a2b - lavd 55.12.100 - avdevice.h
  962   Add avdevice_capabilities_create() function.
  963   Add avdevice_capabilities_free() function.
  964 
  965 2014-04-07 - 0a1cc04 / 8b17243 - lavu 52.75.100 / 53.11.0 - pixfmt.h
  966   Add AV_PIX_FMT_YVYU422 pixel format.
  967 
  968 2014-04-04 - c1d0536 / 8542f9c - lavu 52.74.100 / 53.10.0 - replaygain.h
  969   Full scale for peak values is now 100000 (instead of UINT32_MAX) and values
  970   may overflow.
  971 
  972 2014-04-03 - c16e006 / 7763118 - lavu 52.73.100 / 53.9.0 - log.h
  973   Add AV_LOG(c) macro to have 256 color debug messages.
  974 
  975 2014-04-03 - eaed4da9 - lavu 52.72.100 - opt.h
  976   Add AV_OPT_MULTI_COMPONENT_RANGE define to allow return
  977   multi-component option ranges.
  978 
  979 2014-03-29 - cd50a44b - lavu 52.70.100 - mem.h
  980   Add av_dynarray_add_nofree() function.
  981 
  982 2014-02-24 - 3e1f241 / d161ae0 - lavu 52.69.100 / 53.8.0 - frame.h
  983   Add av_frame_remove_side_data() for removing a single side data
  984   instance from a frame.
  985 
  986 2014-03-24 - 83e8978 / 5a7e35d - lavu 52.68.100 / 53.7.0 - frame.h, replaygain.h
  987   Add AV_FRAME_DATA_REPLAYGAIN for exporting replaygain tags.
  988   Add a new header replaygain.h with the AVReplayGain struct.
  989 
  990 2014-03-24 - 83e8978 / 5a7e35d - lavc 55.54.100 / 55.36.0 - avcodec.h
  991   Add AV_PKT_DATA_REPLAYGAIN for exporting replaygain tags.
  992 
  993 2014-03-24 - 595ba3b / 25b3258 - lavf 55.35.100 / 55.13.0 - avformat.h
  994   Add AVStream.side_data and AVStream.nb_side_data for exporting stream-global
  995   side data (e.g. replaygain tags, video rotation)
  996 
  997 2014-03-24 - bd34e26 / 0e2c3ee - lavc 55.53.100 / 55.35.0 - avcodec.h
  998   Give the name AVPacketSideData to the previously anonymous struct used for
  999   AVPacket.side_data.
 1000 
 1001 
 1002 -------- 8< --------- FFmpeg 2.2 was cut here -------- 8< ---------
 1003 
 1004 2014-03-18 - 37c07d4 - lsws 2.5.102
 1005   Make gray16 full-scale.
 1006 
 1007 2014-03-16 - 6b1ca17 / 1481d24 - lavu 52.67.100 / 53.6.0 - pixfmt.h
 1008   Add RGBA64_LIBAV pixel format and variants for compatibility
 1009 
 1010 2014-03-11 - 3f3229c - lavf 55.34.101 - avformat.h
 1011   Set AVFormatContext.start_time_realtime when demuxing.
 1012 
 1013 2014-03-03 - 06fed440 - lavd 55.11.100 - avdevice.h
 1014   Add av_input_audio_device_next().
 1015   Add av_input_video_device_next().
 1016   Add av_output_audio_device_next().
 1017   Add av_output_video_device_next().
 1018 
 1019 2014-02-24 - fff5262 / 1155fd0 - lavu 52.66.100 / 53.5.0 - frame.h
 1020   Add av_frame_copy() for copying the frame data.
 1021 
 1022 2014-02-24 - a66be60 - lswr 0.18.100 - swresample.h
 1023   Add swr_is_initialized() for checking whether a resample context is initialized.
 1024 
 1025 2014-02-22 - 5367c0b / 7e86c27 - lavr 1.2.0 - avresample.h
 1026   Add avresample_is_open() for checking whether a resample context is open.
 1027 
 1028 2014-02-19 - 6a24d77 / c3ecd96 - lavu 52.65.100 / 53.4.0  - opt.h
 1029   Add AV_OPT_FLAG_EXPORT and AV_OPT_FLAG_READONLY to mark options meant (only)
 1030   for reading.
 1031 
 1032 2014-02-19 - f4c8d00 / 6bb8720 - lavu 52.64.101 / 53.3.1 - opt.h
 1033   Deprecate unused AV_OPT_FLAG_METADATA.
 1034 
 1035 2014-02-16 - 81c3f81 - lavd 55.10.100 - avdevice.h
 1036   Add avdevice_list_devices() and avdevice_free_list_devices()
 1037 
 1038 2014-02-16 - db3c970 - lavf 55.33.100 - avio.h
 1039   Add avio_find_protocol_name() to find out the name of the protocol that would
 1040   be selected for a given URL.
 1041 
 1042 2014-02-15 - a2bc6c1 / c98f316 - lavu 52.64.100 / 53.3.0 - frame.h
 1043   Add AV_FRAME_DATA_DOWNMIX_INFO value to the AVFrameSideDataType enum and
 1044   downmix_info.h API, which identify downmix-related metadata.
 1045 
 1046 2014-02-11 - 1b05ac2 - lavf 55.32.100 - avformat.h
 1047   Add av_write_uncoded_frame() and av_interleaved_write_uncoded_frame().
 1048 
 1049 2014-02-04 - 3adb5f8 / d9ae103 - lavf 55.30.100 / 55.11.0 - avformat.h
 1050   Add AVFormatContext.max_interleave_delta for controlling amount of buffering
 1051   when interleaving.
 1052 
 1053 2014-02-02 - 5871ee5 - lavf 55.29.100 - avformat.h
 1054   Add output_ts_offset muxing option to AVFormatContext.
 1055 
 1056 2014-01-27 - 102bd64 - lavd 55.7.100 - avdevice.h
 1057                        lavf 55.28.100 - avformat.h
 1058   Add avdevice_dev_to_app_control_message() function.
 1059 
 1060 2014-01-27 - 7151411 - lavd 55.6.100 - avdevice.h
 1061                        lavf 55.27.100 - avformat.h
 1062   Add avdevice_app_to_dev_control_message() function.
 1063 
 1064 2014-01-24 - 86bee79 - lavf 55.26.100 - avformat.h
 1065   Add AVFormatContext option metadata_header_padding to allow control over the
 1066   amount of padding added.
 1067 
 1068 2014-01-20 - eef74b2 / 93c553c - lavc 55.48.102 / 55.32.1 - avcodec.h
 1069   Edges are not required anymore on video buffers allocated by get_buffer2()
 1070   (i.e. as if the CODEC_FLAG_EMU_EDGE flag was always on). Deprecate
 1071   CODEC_FLAG_EMU_EDGE and avcodec_get_edge_width().
 1072 
 1073 2014-01-19 - 1a193c4 - lavf 55.25.100 - avformat.h
 1074   Add avformat_get_mov_video_tags() and avformat_get_mov_audio_tags().
 1075 
 1076 2014-01-19 - 3532dd5 - lavu 52.63.100 - rational.h
 1077   Add av_make_q() function.
 1078 
 1079 2014-01-05 - 4cf4da9 / 5b4797a - lavu 52.62.100 / 53.2.0 - frame.h
 1080   Add AV_FRAME_DATA_MATRIXENCODING value to the AVFrameSideDataType enum, which
 1081   identifies AVMatrixEncoding data.
 1082 
 1083 2014-01-05 - 751385f / 5c437fb - lavu 52.61.100 / 53.1.0 - channel_layout.h
 1084   Add values for various Dolby flags to the AVMatrixEncoding enum.
 1085 
 1086 2014-01-04 - b317f94 - lavu 52.60.100 - mathematics.h
 1087   Add av_add_stable() function.
 1088 
 1089 2013-12-22 - 911676c - lavu 52.59.100 - avstring.h
 1090   Add av_strnlen() function.
 1091 
 1092 2013-12-09 - 64f73ac - lavu 52.57.100 - opencl.h
 1093   Add av_opencl_benchmark() function.
 1094 
 1095 2013-11-30 - 82b2e9c - lavu 52.56.100 - ffversion.h
 1096   Moves version.h to libavutil/ffversion.h.
 1097   Install ffversion.h and make it public.
 1098 
 1099 2013-12-11 - 29c83d2 / b9fb59d,409a143 / 9431356,44967ab / d7b3ee9 - lavc 55.45.101 / 55.28.1 - avcodec.h
 1100   av_frame_alloc(), av_frame_unref() and av_frame_free() now can and should be
 1101   used instead of avcodec_alloc_frame(), avcodec_get_frame_defaults() and
 1102   avcodec_free_frame() respectively. The latter three functions are deprecated.
 1103 
 1104 2013-12-09 - 7a60348 / 7e244c6- - lavu 52.58.100 / 52.20.0 - frame.h
 1105   Add AV_FRAME_DATA_STEREO3D value to the AVFrameSideDataType enum and
 1106   stereo3d.h API, that identify codec-independent stereo3d information.
 1107 
 1108 2013-11-26 - 625b290 / 1eaac1d- - lavu 52.55.100 / 52.19.0 - frame.h
 1109   Add AV_FRAME_DATA_A53_CC value to the AVFrameSideDataType enum, which
 1110   identifies ATSC A53 Part 4 Closed Captions data.
 1111 
 1112 2013-11-22 - 6859065 - lavu 52.54.100 - avstring.h
 1113   Add av_utf8_decode() function.
 1114 
 1115 2013-11-22 - fb7d70c - lavc 55.44.100 - avcodec.h
 1116   Add HEVC profiles
 1117 
 1118 2013-11-20 - c28b61c - lavc 55.44.100 - avcodec.h
 1119   Add av_packet_{un,}pack_dictionary()
 1120   Add AV_PKT_METADATA_UPDATE side data type, used to transmit key/value
 1121   strings between a stream and the application.
 1122 
 1123 2013-11-14 - 7c888ae / cce3e0a - lavu 52.53.100 / 52.18.0 - mem.h
 1124   Move av_fast_malloc() and av_fast_realloc() for libavcodec to libavutil.
 1125 
 1126 2013-11-14 - b71e4d8 / 8941971 - lavc 55.43.100 / 55.27.0 - avcodec.h
 1127   Deprecate AVCodecContext.error_rate, it is replaced by the 'error_rate'
 1128   private option of the mpegvideo encoder family.
 1129 
 1130 2013-11-14 - 31c09b7 / 728c465 - lavc 55.42.100 / 55.26.0 - vdpau.h
 1131   Add av_vdpau_get_profile().
 1132   Add av_vdpau_alloc_context(). This function must from now on be
 1133   used for allocating AVVDPAUContext.
 1134 
 1135 2013-11-04 - be41f21 / cd8f772 - lavc 55.41.100 / 55.25.0 - avcodec.h
 1136                        lavu 52.51.100 - frame.h
 1137   Add ITU-R BT.2020 and other not yet included values to color primaries,
 1138   transfer characteristics and colorspaces.
 1139 
 1140 2013-11-04 - 85cabf1 - lavu 52.50.100 - avutil.h
 1141   Add av_fopen_utf8()
 1142 
 1143 2013-10-31 - 78265fc / 28096e0 - lavu 52.49.100 / 52.17.0 - frame.h
 1144   Add AVFrame.flags and AV_FRAME_FLAG_CORRUPT.
 1145 
 1146 
 1147 -------- 8< --------- FFmpeg 2.1 was cut here -------- 8< ---------
 1148 
 1149 2013-10-27 - dbe6f9f - lavc 55.39.100 - avcodec.h
 1150   Add CODEC_CAP_DELAY support to avcodec_decode_subtitle2.
 1151 
 1152 2013-10-27 - d61617a - lavu 52.48.100 - parseutils.h
 1153   Add av_get_known_color_name().
 1154 
 1155 2013-10-17 - 8696e51 - lavu 52.47.100 - opt.h
 1156   Add AV_OPT_TYPE_CHANNEL_LAYOUT and channel layout option handlers
 1157   av_opt_get_channel_layout() and av_opt_set_channel_layout().
 1158 
 1159 2013-10-06 - ccf96f8 -libswscale 2.5.101 - options.c
 1160   Change default scaler to bicubic
 1161 
 1162 2013-10-03 - e57dba0 - lavc 55.34.100 - avcodec.h
 1163   Add av_codec_get_max_lowres()
 1164 
 1165 2013-10-02 - 5082fcc - lavf 55.19.100 - avformat.h
 1166   Add audio/video/subtitle AVCodec fields to AVFormatContext to force specific
 1167   decoders
 1168 
 1169 2013-09-28 - 7381d31 / 0767bfd - lavfi 3.88.100 / 3.11.0 - avfilter.h
 1170   Add AVFilterGraph.execute and AVFilterGraph.opaque for custom slice threading
 1171   implementations.
 1172 
 1173 2013-09-21 - 85f8a3c / e208e6d - lavu 52.46.100 / 52.16.0 - pixfmt.h
 1174   Add interleaved 4:2:2 8/10-bit formats AV_PIX_FMT_NV16 and
 1175   AV_PIX_FMT_NV20.
 1176 
 1177 2013-09-16 - c74c3fb / 3feb3d6 - lavu 52.44.100 / 52.15.0 - mem.h
 1178   Add av_reallocp.
 1179 
 1180 2013-09-04 - 3e1f507 - lavc 55.31.101 - avcodec.h
 1181   avcodec_close() argument can be NULL.
 1182 
 1183 2013-09-04 - 36cd017a - lavf 55.16.101 - avformat.h
 1184   avformat_close_input() argument can be NULL and point on NULL.
 1185 
 1186 2013-08-29 - e31db62 - lavf 55.15.100 - avformat.h
 1187   Add av_format_get_probe_score().
 1188 
 1189 2013-08-15 - 1e0e193 - lsws 2.5.100 -
 1190   Add a sws_dither AVOption, allowing to set the dither algorithm used
 1191 
 1192 2013-08-11 - d404fe35 - lavc 55.27.100 - vdpau.h
 1193   Add a render2 alternative to the render callback function.
 1194 
 1195 2013-08-11 - af05edc - lavc 55.26.100 - vdpau.h
 1196   Add allocation function for AVVDPAUContext, allowing
 1197   to extend it in the future without breaking ABI/API.
 1198 
 1199 2013-08-10 - 67a580f / 5a9a9d4 - lavc 55.25.100 / 55.16.0 - avcodec.h
 1200   Extend AVPacket API with av_packet_unref, av_packet_ref,
 1201   av_packet_move_ref, av_packet_copy_props, av_packet_free_side_data.
 1202 
 1203 2013-08-05 - 9547e3e / f824535 - lavc 55.22.100 / 55.13.0 - avcodec.h
 1204   Deprecate the bitstream-related members from struct AVVDPAUContext.
 1205   The bitstream buffers no longer need to be explicitly freed.
 1206 
 1207 2013-08-05 - 3b805dc / 549294f - lavc 55.21.100 / 55.12.0 - avcodec.h
 1208   Deprecate the CODEC_CAP_HWACCEL_VDPAU codec capability. Use CODEC_CAP_HWACCEL
 1209   and select the AV_PIX_FMT_VDPAU format with get_format() instead.
 1210 
 1211 2013-08-05 - 4ee0984 / a0ad5d0 - lavu 52.41.100 / 52.14.0 - pixfmt.h
 1212   Deprecate AV_PIX_FMT_VDPAU_*. Use AV_PIX_FMT_VDPAU instead.
 1213 
 1214 2013-08-02 - 82fdfe8 / a8b1927 - lavc 55.20.100 / 55.11.0 - avcodec.h
 1215   Add output_picture_number to AVCodecParserContext.
 1216 
 1217 2013-07-23 - abc8110 - lavc 55.19.100 - avcodec.h
 1218   Add avcodec_chroma_pos_to_enum()
 1219   Add avcodec_enum_to_chroma_pos()
 1220 
 1221 
 1222 -------- 8< --------- FFmpeg 2.0 was cut here -------- 8< ---------
 1223 
 1224 2013-07-03 - 838bd73 - lavfi 3.78.100 - avfilter.h
 1225   Deprecate avfilter_graph_parse() in favor of the equivalent
 1226   avfilter_graph_parse_ptr().
 1227 
 1228 2013-06-24 - af5f9c0 / 95d5246 - lavc 55.17.100 / 55.10.0 - avcodec.h
 1229   Add MPEG-2 AAC profiles
 1230 
 1231 2013-06-25 - af5f9c0 / 95d5246 - lavf 55.10.100 - avformat.h
 1232   Add AV_DISPOSITION_* flags to indicate text track kind.
 1233 
 1234 2013-06-15 - 99b8cd0 - lavu 52.36.100
 1235   Add AVRIPEMD:
 1236    av_ripemd_alloc()
 1237    av_ripemd_init()
 1238    av_ripemd_update()
 1239    av_ripemd_final()
 1240 
 1241 2013-06-10 - 82ef670 - lavu 52.35.101 - hmac.h
 1242   Add AV_HMAC_SHA224, AV_HMAC_SHA256, AV_HMAC_SHA384, AV_HMAC_SHA512
 1243 
 1244 2013-06-04 - 30b491f / fc962d4 - lavu 52.35.100 / 52.13.0 - mem.h
 1245   Add av_realloc_array and av_reallocp_array
 1246 
 1247 2013-05-30 - 682b227 - lavu 52.35.100
 1248   Add AVSHA512:
 1249    av_sha512_alloc()
 1250    av_sha512_init()
 1251    av_sha512_update()
 1252    av_sha512_final()
 1253 
 1254 2013-05-24 - 8d4e969 / 129bb23 - lavfi 3.10.0 / 3.70.100 - avfilter.h
 1255   Add support for slice multithreading to lavfi. Filters supporting threading
 1256   are marked with AVFILTER_FLAG_SLICE_THREADS.
 1257   New fields AVFilterContext.thread_type, AVFilterGraph.thread_type and
 1258   AVFilterGraph.nb_threads (accessible directly or through AVOptions) may be
 1259   used to configure multithreading.
 1260 
 1261 2013-05-24 - fe40a9f / 2a6eaea - lavu 52.12.0 / 52.34.100 - cpu.h
 1262   Add av_cpu_count() function for getting the number of logical CPUs.
 1263 
 1264 2013-05-24 - 0c25c39 / b493847 - lavc 55.7.0 / 55.12.100 - avcodec.h
 1265   Add picture_structure to AVCodecParserContext.
 1266 
 1267 2013-05-17 - 3a751ea - lavu 52.33.100 - opt.h
 1268   Add AV_OPT_TYPE_COLOR value to AVOptionType enum.
 1269 
 1270 2013-05-13 - e398416 - lavu 52.31.100 - mem.h
 1271   Add av_dynarray2_add().
 1272 
 1273 2013-05-12 - 1776177 - lavfi 3.65.100
 1274   Add AVFILTER_FLAG_SUPPORT_TIMELINE* filter flags.
 1275 
 1276 2013-04-19 - 380cfce - lavc 55.4.100
 1277   Add AV_CODEC_PROP_TEXT_SUB property for text based subtitles codec.
 1278 
 1279 2013-04-18 - 7c1a002 - lavf 55.3.100
 1280   The matroska demuxer can now output proper verbatim ASS packets. It will
 1281   become the default starting lavf 56.0.100.
 1282 
 1283 2013-04-10 - af0d270 - lavu 25.26.100 - avutil.h,opt.h
 1284   Add av_int_list_length()
 1285   and av_opt_set_int_list().
 1286 
 1287 2013-03-30 - 5c73645 - lavu 52.24.100 - samplefmt.h
 1288   Add av_samples_alloc_array_and_samples().
 1289 
 1290 2013-03-29 - ef7b6b4 - lavf 55.1.100 - avformat.h
 1291   Add av_guess_frame_rate()
 1292 
 1293 2013-03-20 - 8d928a9 - lavu 52.22.100 - opt.h
 1294   Add AV_OPT_TYPE_DURATION value to AVOptionType enum.
 1295 
 1296 2013-03-17 - 7aa9af5 - lavu 52.20.100 - opt.h
 1297   Add AV_OPT_TYPE_VIDEO_RATE value to AVOptionType enum.
 1298 
 1299 
 1300 -------- 8< --------- FFmpeg 1.2 was cut here -------- 8< ---------
 1301 
 1302 2013-03-07 - 9767ec6 - lavu 52.18.100 - avstring.h,bprint.h
 1303   Add av_escape() and av_bprint_escape() API.
 1304 
 1305 2013-02-24 - b59cd08 - lavfi 3.41.100 - buffersink.h
 1306   Add sample_rates field to AVABufferSinkParams.
 1307 
 1308 2013-01-17 - a1a707f - lavf 54.61.100
 1309   Add av_codec_get_tag2().
 1310 
 1311 2013-01-01 - 2eb2e17 - lavfi 3.34.100
 1312   Add avfilter_get_audio_buffer_ref_from_arrays_channels.
 1313 
 1314 
 1315 -------- 8< --------- FFmpeg 1.1 was cut here -------- 8< ---------
 1316 
 1317 2012-12-20 - 34de47aa - lavfi 3.29.100 - avfilter.h
 1318   Add AVFilterLink.channels, avfilter_link_get_channels()
 1319   and avfilter_ref_get_channels().
 1320 
 1321 2012-12-15 - 96d815fc - lavc 54.80.100 - avcodec.h
 1322   Add pkt_size field to AVFrame.
 1323 
 1324 2012-11-25 - c70ec631 - lavu 52.9.100 - opt.h
 1325   Add the following convenience functions to opt.h:
 1326    av_opt_get_image_size
 1327    av_opt_get_pixel_fmt
 1328    av_opt_get_sample_fmt
 1329    av_opt_set_image_size
 1330    av_opt_set_pixel_fmt
 1331    av_opt_set_sample_fmt
 1332 
 1333 2012-11-17 - 4cd74c81 - lavu 52.8.100 - bprint.h
 1334   Add av_bprint_strftime().
 1335 
 1336 2012-11-15 - 92648107 - lavu 52.7.100 - opt.h
 1337   Add av_opt_get_key_value().
 1338 
 1339 2012-11-13 - 79456652 - lavfi 3.23.100 - avfilter.h
 1340   Add channels field to AVFilterBufferRefAudioProps.
 1341 
 1342 2012-11-03 - 481fdeee - lavu 52.3.100 - opt.h
 1343   Add AV_OPT_TYPE_SAMPLE_FMT value to AVOptionType enum.
 1344 
 1345 2012-10-21 - 6fb2fd8 - lavc  54.68.100 - avcodec.h
 1346                        lavfi  3.20.100 - avfilter.h
 1347   Add AV_PKT_DATA_STRINGS_METADATA side data type, used to transmit key/value
 1348   strings between AVPacket and AVFrame, and add metadata field to
 1349   AVCodecContext (which shall not be accessed by users; see AVFrame metadata
 1350   instead).
 1351 
 1352 2012-09-27 - a70b493 - lavd 54.3.100 - version.h
 1353   Add LIBAVDEVICE_IDENT symbol.
 1354 
 1355 2012-09-27 - a70b493 - lavfi 3.18.100 - version.h
 1356   Add LIBAVFILTER_IDENT symbol.
 1357 
 1358 2012-09-27 - a70b493 - libswr 0.16.100 - version.h
 1359   Add LIBSWRESAMPLE_VERSION, LIBSWRESAMPLE_BUILD
 1360   and LIBSWRESAMPLE_IDENT symbols.
 1361 
 1362 
 1363 -------- 8< --------- FFmpeg 1.0 was cut here -------- 8< ---------
 1364 
 1365 2012-09-06 - 29e972f - lavu 51.72.100 - parseutils.h
 1366   Add av_small_strptime() time parsing function.
 1367 
 1368   Can be used as a stripped-down replacement for strptime(), on
 1369   systems which do not support it.
 1370 
 1371 2012-08-25 - 2626cc4 - lavf 54.28.100
 1372   Matroska demuxer now identifies SRT subtitles as AV_CODEC_ID_SUBRIP instead
 1373   of AV_CODEC_ID_TEXT.
 1374 
 1375 2012-08-13 - 5c0d8bc - lavfi 3.8.100 - avfilter.h
 1376   Add avfilter_get_class() function, and priv_class field to AVFilter
 1377   struct.
 1378 
 1379 2012-08-12 - a25346e - lavu 51.69.100 - opt.h
 1380   Add AV_OPT_FLAG_FILTERING_PARAM symbol in opt.h.
 1381 
 1382 2012-07-31 - 23fc4dd - lavc 54.46.100
 1383   Add channels field to AVFrame.
 1384 
 1385 2012-07-30 - f893904 - lavu 51.66.100
 1386   Add av_get_channel_description()
 1387   and av_get_standard_channel_layout() functions.
 1388 
 1389 2012-07-21 - 016a472 - lavc 54.43.100
 1390   Add decode_error_flags field to AVFrame.
 1391 
 1392 2012-07-20 - b062936 - lavf 54.18.100
 1393   Add avformat_match_stream_specifier() function.
 1394 
 1395 2012-07-14 - f49ec1b - lavc 54.38.100 - avcodec.h
 1396   Add metadata to AVFrame, and the accessor functions
 1397   av_frame_get_metadata() and av_frame_set_metadata().
 1398 
 1399 2012-07-10 - 0e003d8 - lavc 54.33.100
 1400   Add av_fast_padded_mallocz().
 1401 
 1402 2012-07-10 - 21d5609 - lavfi 3.2.0 - avfilter.h
 1403   Add init_opaque() callback to AVFilter struct.
 1404 
 1405 2012-06-26 - e6674e4 - lavu 51.63.100 - imgutils.h
 1406   Add functions to libavutil/imgutils.h:
 1407   av_image_get_buffer_size()
 1408   av_image_fill_arrays()
 1409   av_image_copy_to_buffer()
 1410 
 1411 2012-06-24 - c41899a - lavu 51.62.100 - version.h
 1412   version moved from avutil.h to version.h
 1413 
 1414 2012-04-11 - 359abb1 - lavu 51.58.100 - error.h
 1415   Add av_make_error_string() and av_err2str() utilities to
 1416   libavutil/error.h.
 1417 
 1418 2012-06-05 - 62b39d4 - lavc 54.24.100
 1419   Add pkt_duration field to AVFrame.
 1420 
 1421 2012-05-24 - f2ee065 - lavu 51.54.100
 1422   Move AVPALETTE_SIZE and AVPALETTE_COUNT macros from
 1423   libavcodec/avcodec.h to libavutil/pixfmt.h.
 1424 
 1425 2012-05-14 - 94a9ac1 - lavf 54.5.100
 1426   Add av_guess_sample_aspect_ratio() function.
 1427 
 1428 2012-04-20 - 65fa7bc - lavfi 2.70.100
 1429   Add avfilter_unref_bufferp() to avfilter.h.
 1430 
 1431 2012-04-13 - 162e400 - lavfi 2.68.100
 1432   Install libavfilter/asrc_abuffer.h public header.
 1433 
 1434 2012-03-26 - a67d9cf - lavfi 2.66.100
 1435   Add avfilter_fill_frame_from_{audio_,}buffer_ref() functions.
 1436 
 1437 2013-05-15 - ff46809 / e6c4ac7 - lavu 52.32.100 / 52.11.0 - pixdesc.h
 1438   Replace PIX_FMT_* flags with AV_PIX_FMT_FLAG_*.
 1439 
 1440 2013-04-03 - 6fc58a8 / 507b1e4 - lavc 55.7.100 / 55.4.0 - avcodec.h
 1441   Add field_order to AVCodecParserContext.
 1442 
 1443 2013-04-19 - f4b05cd / 5e83d9a - lavc 55.5.100 / 55.2.0 - avcodec.h
 1444   Add CODEC_FLAG_UNALIGNED to allow decoders to produce unaligned output.
 1445 
 1446 2013-04-11 - lavfi 3.53.100 / 3.8.0
 1447   231fd44 / 38f0c07 - Move all content from avfiltergraph.h to avfilter.h. Deprecate
 1448             avfilterhraph.h, user applications should include just avfilter.h
 1449   86070b8 / bc1a985 - Add avfilter_graph_alloc_filter(), deprecate avfilter_open() and
 1450             avfilter_graph_add_filter().
 1451   4fde705 / 1113672 - Add AVFilterContext.graph pointing to the AVFilterGraph that contains the
 1452             filter.
 1453   710b0aa / 48a5ada - Add avfilter_init_str(), deprecate avfilter_init_filter().
 1454   46de9ba / 1ba95a9 - Add avfilter_init_dict().
 1455   16fc24b / 7cdd737 - Add AVFilter.flags field and AVFILTER_FLAG_DYNAMIC_{INPUTS,OUTPUTS} flags.
 1456   f4db6bf / 7e8fe4b - Add avfilter_pad_count() for counting filter inputs/outputs.
 1457   835cc0f / fa2a34c - Add avfilter_next(), deprecate av_filter_next().
 1458             Deprecate avfilter_uninit().
 1459 
 1460 2013-04-09 - lavfi 3.51.100 / 3.7.0 - avfilter.h
 1461   0594ef0 / b439c99 - Add AVFilter.priv_class for exporting filter options through the
 1462             AVOptions API in the similar way private options work in lavc and lavf.
 1463   44d4488 / 8114c10 - Add avfilter_get_class().
 1464   Switch all filters to use AVOptions.
 1465 
 1466 2013-03-19 - 17ebef2 / 2c328a9 - lavu 52.20.100 / 52.9.0 - pixdesc.h
 1467   Add av_pix_fmt_count_planes() function for counting planes in a pixel format.
 1468 
 1469 2013-03-16 - ecade98 / 42c7c61 - lavfi 3.47.100 / 3.6.0
 1470   Add AVFilterGraph.nb_filters, deprecate AVFilterGraph.filter_count.
 1471 
 1472 2013-03-08 - Reference counted buffers - lavu 52.8.0, lavc 55.0.100 / 55.0.0, lavf 55.0.100 / 55.0.0,
 1473 lavd 54.4.100 / 54.0.0, lavfi 3.5.0
 1474   36099df / 8e401db, 532f31a / 1cec062 - add a new API for reference counted buffers and buffer
 1475                      pools (new header libavutil/buffer.h).
 1476   2653e12 / 1afddbe - add AVPacket.buf to allow reference counting for the AVPacket data.
 1477             Add av_packet_from_data() function for constructing packets from
 1478             av_malloc()ed data.
 1479   c4e8821 / 7ecc2d4 - move AVFrame from lavc to lavu (new header libavutil/frame.h), add
 1480             AVFrame.buf/extended_buf to allow reference counting for the AVFrame
 1481             data. Add new API for working with reference-counted AVFrames.
 1482   80e9e63 / 759001c - add the refcounted_frames field to AVCodecContext to make audio and
 1483             video decoders return reference-counted frames. Add get_buffer2()
 1484             callback to AVCodecContext which allocates reference-counted frames.
 1485             Add avcodec_default_get_buffer2() as the default get_buffer2()
 1486             implementation.
 1487             Deprecate AVCodecContext.get_buffer() / release_buffer() /
 1488             reget_buffer(), avcodec_default_get_buffer(),
 1489             avcodec_default_reget_buffer(), avcodec_default_release_buffer().
 1490             Remove avcodec_default_free_buffers(), which should not have ever
 1491             been called from outside of lavc.
 1492             Deprecate the following AVFrame fields:
 1493                 * base -- is now stored in AVBufferRef
 1494                 * reference, type, buffer_hints -- are unnecessary in the new API
 1495                 * hwaccel_picture_private, owner, thread_opaque -- should not
 1496                   have been accessed from outside of lavc
 1497                 * qscale_table, qstride, qscale_type, mbskip_table, motion_val,
 1498                   mb_type, dct_coeff, ref_index -- mpegvideo-specific tables,
 1499                   which are not exported anymore.
 1500   a05a44e / 7e35037 - switch libavfilter to use AVFrame instead of AVFilterBufferRef. Add
 1501             av_buffersrc_add_frame(), deprecate av_buffersrc_buffer().
 1502             Add av_buffersink_get_frame() and av_buffersink_get_samples(),
 1503             deprecate av_buffersink_read() and av_buffersink_read_samples().
 1504             Deprecate AVFilterBufferRef and all functions for working with it.
 1505 
 1506 2013-03-17 - 6c17ff8 / 12c5c1d - lavu 52.19.100 / 52.8.0 - avstring.h
 1507   Add av_isdigit, av_isgraph, av_isspace, av_isxdigit.
 1508 
 1509 2013-02-23 - 71cf094 / 9f12235 - lavfi 3.40.100 / 3.4.0 - avfiltergraph.h
 1510   Add resample_lavr_opts to AVFilterGraph for setting libavresample options
 1511   for auto-inserted resample filters.
 1512 
 1513 2013-01-25 - e7e14bc / 38c1466 - lavu 52.17.100 / 52.7.0 - dict.h
 1514   Add av_dict_parse_string() to set multiple key/value pairs at once from a
 1515   string.
 1516 
 1517 2013-01-25 - 25be630 / b85a5e8 - lavu 52.16.100 / 52.6.0 - avstring.h
 1518   Add av_strnstr()
 1519 
 1520 2013-01-15 - e7e0186 / 8ee288d - lavu 52.15.100 / 52.5.0 - hmac.h
 1521   Add AVHMAC.
 1522 
 1523 2013-01-13 - 8ee7b38 / 44e065d - lavc 54.87.100 / 54.36.0 - vdpau.h
 1524   Add AVVDPAUContext struct for VDPAU hardware-accelerated decoding.
 1525 
 1526 2013-01-12 - dae382b / 169fb94 - lavu 52.14.100 / 52.4.0 - pixdesc.h
 1527   Add AV_PIX_FMT_VDPAU flag.
 1528 
 1529 2013-01-07 - 249fca3 / 074a00d - lavr 1.1.0
 1530   Add avresample_set_channel_mapping() for input channel reordering,
 1531   duplication, and silencing.
 1532 
 1533 2012-12-29 - lavu 52.13.100 / 52.3.0 - avstring.h
 1534   2ce43b3 / d8fd06c - Add av_basename() and av_dirname().
 1535   e13d5e9 / c1a02e8 - Add av_pix_fmt_get_chroma_sub_sample and deprecate
 1536                       avcodec_get_chroma_sub_sample.
 1537 
 1538 2012-11-11 - 03b0787 / 5980f5d - lavu 52.6.100 / 52.2.0 - audioconvert.h
 1539   Rename audioconvert.h to channel_layout.h. audioconvert.h is now deprecated.
 1540 
 1541 2012-10-21 - e3a91c5 / a893655 - lavu 51.77.100 / 51.45.0 - error.h
 1542   Add AVERROR_EXPERIMENTAL
 1543 
 1544 2012-10-12 - a33ed6b / d2fcb35 - lavu 51.76.100 / 51.44.0 - pixdesc.h
 1545   Add functions for accessing pixel format descriptors.
 1546   Accessing the av_pix_fmt_descriptors array directly is now
 1547   deprecated.
 1548 
 1549 2012-10-11 - f391e40 / 9a92aea - lavu 51.75.100 / 51.43.0 - aes.h, md5.h, sha.h, tree.h
 1550   Add functions for allocating the opaque contexts for the algorithms,
 1551 
 1552 2012-10-10 - de31814 / b522000 - lavf 54.32.100 / 54.18.0 - avio.h
 1553   Add avio_closep to complement avio_close.
 1554 
 1555 2012-10-08 - ae77266 / 78071a1 - lavu 51.74.100 / 51.42.0 - pixfmt.h
 1556   Rename PixelFormat to AVPixelFormat and all PIX_FMT_* to AV_PIX_FMT_*.
 1557   To provide backwards compatibility, PixelFormat is now #defined as
 1558   AVPixelFormat.
 1559   Note that this can break user code that includes pixfmt.h and uses the
 1560   'PixelFormat' identifier. Such code should either #undef PixelFormat
 1561   or stop using the PixelFormat name.
 1562 
 1563 2012-10-05 - 55c49af / e7ba5b1 - lavr 1.0.0 - avresample.h
 1564   Data planes parameters to avresample_convert() and
 1565   avresample_read() are now uint8_t** instead of void**.
 1566   Libavresample is now stable.
 1567 
 1568 2012-09-26 - 3ba0dab7 / 1384df64 - lavf 54.29.101 / 56.06.3 - avformat.h
 1569   Add AVFormatContext.avoid_negative_ts.
 1570 
 1571 2012-09-24 - 46a3595 / a42aada - lavc 54.59.100 / 54.28.0 - avcodec.h
 1572   Add avcodec_free_frame(). This function must now
 1573   be used for freeing an AVFrame.
 1574 
 1575 2012-09-12 - e3e09f2 / 8919fee - lavu 51.73.100 / 51.41.0 - audioconvert.h
 1576   Added AV_CH_LOW_FREQUENCY_2 channel mask value.
 1577 
 1578 2012-09-04 - b21b5b0 / 686a329 - lavu 51.71.100 / 51.40.0 - opt.h
 1579   Reordered the fields in default_val in AVOption, changed which
 1580   default_val field is used for which AVOptionType.
 1581 
 1582 2012-08-30 - 98298eb / a231832 - lavc 54.54.101 / 54.26.1 - avcodec.h
 1583   Add codec descriptor properties AV_CODEC_PROP_LOSSY and
 1584   AV_CODEC_PROP_LOSSLESS.
 1585 
 1586 2012-08-18 - lavc 54.26 - avcodec.h
 1587   Add codec descriptors for accessing codec properties without having
 1588   to refer to a specific decoder or encoder.
 1589 
 1590   f5f3684 / c223d79 - Add an AVCodecDescriptor struct and functions
 1591             avcodec_descriptor_get() and avcodec_descriptor_next().
 1592   f5f3684 / 51efed1 - Add AVCodecDescriptor.props and AV_CODEC_PROP_INTRA_ONLY.
 1593   6c180b3 / 91e59fe - Add avcodec_descriptor_get_by_name().
 1594 
 1595 2012-08-08 - f5f3684 / 987170c - lavu 51.68.100 / 51.38.0 - dict.h
 1596   Add av_dict_count().
 1597 
 1598 2012-08-07 - 7a72695 / 104e10f - lavc 54.51.100 / 54.25.0 - avcodec.h
 1599   Rename CodecID to AVCodecID and all CODEC_ID_* to AV_CODEC_ID_*.
 1600   To provide backwards compatibility, CodecID is now #defined as AVCodecID.
 1601   Note that this can break user code that includes avcodec.h and uses the
 1602   'CodecID' identifier. Such code should either #undef CodecID or stop using the
 1603   CodecID name.
 1604 
 1605 2012-08-03 - e776ee8 / 239fdf1 - lavu 51.66.101 / 51.37.1 - cpu.h
 1606                        lsws 2.1.1   - swscale.h
 1607   Rename AV_CPU_FLAG_MMX2  ---> AV_CPU_FLAG_MMXEXT.
 1608   Rename SWS_CPU_CAPS_MMX2 ---> SWS_CPU_CAPS_MMXEXT.
 1609 
 1610 2012-07-29 - 7c26761 / 681ed00 - lavf 54.22.100 / 54.13.0 - avformat.h
 1611   Add AVFMT_FLAG_NOBUFFER for low latency use cases.
 1612 
 1613 2012-07-10 - fbe0245 / f3e5e6f - lavu 51.65.100 / 51.37.0
 1614   Add av_malloc_array() and av_mallocz_array()
 1615 
 1616 2012-06-22 - e847f41 / d3d3a32 - lavu 51.61.100 / 51.34.0
 1617   Add av_usleep()
 1618 
 1619 2012-06-20 - 4da42eb / ae0a301 - lavu 51.60.100 / 51.33.0
 1620   Move av_gettime() to libavutil, add libavutil/time.h
 1621 
 1622 2012-06-09 - 82edf67 / 3971be0 - lavr 0.0.3
 1623   Add a parameter to avresample_build_matrix() for Dolby/DPLII downmixing.
 1624 
 1625 2012-06-12 - c7b9eab / 9baeff9 - lavfi 2.79.100 / 2.23.0 - avfilter.h
 1626   Add AVFilterContext.nb_inputs/outputs. Deprecate
 1627   AVFilterContext.input/output_count.
 1628 
 1629 2012-06-12 - c7b9eab / 84b9fbe - lavfi 2.79.100 / 2.22.0 - avfilter.h
 1630   Add avfilter_pad_get_type() and avfilter_pad_get_name(). Those
 1631   should now be used instead of accessing AVFilterPad members
 1632   directly.
 1633 
 1634 2012-06-12 - 3630a07 / b0f0dfc - lavu 51.57.100 / 51.32.0 - audioconvert.h
 1635   Add av_get_channel_layout_channel_index(), av_get_channel_name()
 1636   and av_channel_layout_extract_channel().
 1637 
 1638 2012-05-25 - 53ce990 / 154486f - lavu 51.55.100 / 51.31.0 - opt.h
 1639   Add av_opt_set_bin()
 1640 
 1641 2012-05-15 - lavfi 2.74.100 / 2.17.0
 1642   Add support for audio filters
 1643   61930bd / ac71230, 1cbf7fb / a2cd9be - add video/audio buffer sink in a new installed
 1644                     header buffersink.h
 1645   1cbf7fb / 720c6b7 - add av_buffersrc_write_frame(), deprecate
 1646             av_vsrc_buffer_add_frame()
 1647   61930bd / ab16504 - add avfilter_copy_buf_props()
 1648   61930bd / 9453c9e - add extended_data to AVFilterBuffer
 1649   61930bd / 1b8c927 - add avfilter_get_audio_buffer_ref_from_arrays()
 1650 
 1651 2012-05-09 - lavu 51.53.100 / 51.30.0 - samplefmt.h
 1652   61930bd / 142e740 - add av_samples_copy()
 1653   61930bd / 6d7f617 - add av_samples_set_silence()
 1654 
 1655 2012-05-09 - 61930bd / a5117a2 - lavc 54.21.101 / 54.13.1
 1656   For audio formats with fixed frame size, the last frame
 1657   no longer needs to be padded with silence, libavcodec
 1658   will handle this internally (effectively all encoders
 1659   behave as if they had CODEC_CAP_SMALL_LAST_FRAME set).
 1660 
 1661 2012-05-07 - 653d117 / 828bd08 - lavc 54.20.100 / 54.13.0 - avcodec.h
 1662   Add sample_rate and channel_layout fields to AVFrame.
 1663 
 1664 2012-05-01 - 2330eb1 / 4010d72 - lavr 0.0.1
 1665   Change AV_MIX_COEFF_TYPE_Q6 to AV_MIX_COEFF_TYPE_Q8.
 1666 
 1667 2012-04-25 - e890b68 / 3527a73 - lavu 51.48.100 / 51.29.0 - cpu.h
 1668   Add av_parse_cpu_flags()
 1669 
 1670 2012-04-24 - 3ead79e / c8af852 - lavr 0.0.0
 1671   Add libavresample audio conversion library
 1672 
 1673 2012-04-20 - 3194ab7 / 0c0d1bc - lavu 51.47.100 / 51.28.0 - audio_fifo.h
 1674   Add audio FIFO functions:
 1675     av_audio_fifo_free()
 1676     av_audio_fifo_alloc()
 1677     av_audio_fifo_realloc()
 1678     av_audio_fifo_write()
 1679     av_audio_fifo_read()
 1680     av_audio_fifo_drain()
 1681     av_audio_fifo_reset()
 1682     av_audio_fifo_size()
 1683     av_audio_fifo_space()
 1684 
 1685 2012-04-14 - lavfi 2.70.100 / 2.16.0 - avfiltergraph.h
 1686   7432bcf / d7bcc71 Add avfilter_graph_parse2().
 1687 
 1688 2012-04-08 - 6bfb304 / 4d693b0 - lavu 51.46.100 / 51.27.0 - samplefmt.h
 1689   Add av_get_packed_sample_fmt() and av_get_planar_sample_fmt()
 1690 
 1691 2012-03-21 - b75c67d - lavu 51.43.100
 1692   Add bprint.h for bprint API.
 1693 
 1694 2012-02-21 - 9cbf17e - lavc 54.4.100
 1695   Add av_get_pcm_codec() function.
 1696 
 1697 2012-02-16 - 560b224 - libswr 0.7.100
 1698   Add swr_set_matrix() function.
 1699 
 1700 2012-02-09 - c28e7af - lavu 51.39.100
 1701   Add a new installed header libavutil/timestamp.h with timestamp
 1702   utilities.
 1703 
 1704 2012-02-06 - 70ffda3 - lavu 51.38.100
 1705   Add av_parse_ratio() function to parseutils.h.
 1706 
 1707 2012-02-06 - 70ffda3 - lavu 51.38.100
 1708   Add AV_LOG_MAX_OFFSET macro to log.h.
 1709 
 1710 2012-02-02 - 0eaa123 - lavu 51.37.100
 1711   Add public timecode helpers.
 1712 
 1713 2012-01-24 - 0c3577b - lavfi 2.60.100
 1714   Add avfilter_graph_dump.
 1715 
 1716 2012-03-20 - 0ebd836 / 3c90cc2 - lavfo 54.2.0
 1717   Deprecate av_read_packet(), use av_read_frame() with
 1718   AVFMT_FLAG_NOPARSE | AVFMT_FLAG_NOFILLIN in AVFormatContext.flags
 1719 
 1720 2012-03-05 - lavc 54.10.100 / 54.8.0
 1721   f095391 / 6699d07 Add av_get_exact_bits_per_sample()
 1722   f095391 / 9524cf7 Add av_get_audio_frame_duration()
 1723 
 1724 2012-03-04 - 2af8f2c / 44fe77b - lavc 54.8.100 / 54.7.0 - avcodec.h
 1725   Add av_codec_is_encoder/decoder().
 1726 
 1727 2012-03-01 - 1eb7f39 / 442c132 - lavc 54.5.100 / 54.3.0 - avcodec.h
 1728   Add av_packet_shrink_side_data.
 1729 
 1730 2012-02-29 - 79ae084 / dd2a4bc - lavf 54.2.100 / 54.2.0 - avformat.h
 1731   Add AVStream.attached_pic and AV_DISPOSITION_ATTACHED_PIC,
 1732   used for dealing with attached pictures/cover art.
 1733 
 1734 2012-02-25 - 305e4b3 / c9bca80 - lavu 51.41.100 / 51.24.0 - error.h
 1735   Add AVERROR_UNKNOWN
 1736   NOTE: this was backported to 0.8
 1737 
 1738 2012-02-20 - eadd426 / e9cda85 - lavc 54.2.100 / 54.2.0
 1739   Add duration field to AVCodecParserContext
 1740 
 1741 2012-02-20 - eadd426 / 0b42a93 - lavu 51.40.100 / 51.23.1 - mathematics.h
 1742   Add av_rescale_q_rnd()
 1743 
 1744 2012-02-08 - f2b20b7 / 38d5533 - lavu 51.38.101 / 51.22.1 - pixdesc.h
 1745   Add PIX_FMT_PSEUDOPAL flag.
 1746 
 1747 2012-02-08 - f2b20b7 / 52f82a1 - lavc 54.2.100 / 54.1.0
 1748   Add avcodec_encode_video2() and deprecate avcodec_encode_video().
 1749 
 1750 2012-02-01 - 4c677df / 316fc74 - lavc 54.1.0
 1751   Add av_fast_padded_malloc() as alternative for av_realloc() when aligned
 1752   memory is required. The buffer will always have FF_INPUT_BUFFER_PADDING_SIZE
 1753   zero-padded bytes at the end.
 1754 
 1755 2012-01-31 - a369a6b / dd6d3b0 - lavf 54.1.0
 1756   Add avformat_get_riff_video_tags() and avformat_get_riff_audio_tags().
 1757   NOTE: this was backported to 0.8
 1758 
 1759 2012-01-31 - a369a6b / af08d9a - lavc 54.1.0
 1760   Add avcodec_is_open() function.
 1761   NOTE: this was backported to 0.8
 1762 
 1763 2012-01-30 - 151ecc2 / 8b93312 - lavu 51.36.100 / 51.22.0 - intfloat.h
 1764   Add a new installed header libavutil/intfloat.h with int/float punning
 1765   functions.
 1766   NOTE: this was backported to 0.8
 1767 
 1768 2012-01-25 - lavf 53.31.100 / 53.22.0
 1769   3c5fe5b / f1caf01 Allow doing av_write_frame(ctx, NULL) for flushing possible
 1770           buffered data within a muxer. Added AVFMT_ALLOW_FLUSH for
 1771           muxers supporting it (av_write_frame makes sure it is called
 1772           only for muxers with this flag).
 1773 
 1774 2012-01-15 - lavc 53.56.105 / 53.34.0
 1775   New audio encoding API:
 1776   67f5650 / b2c75b6 Add CODEC_CAP_VARIABLE_FRAME_SIZE capability for use by audio
 1777           encoders.
 1778   67f5650 / 5ee5fa0 Add avcodec_fill_audio_frame() as a convenience function.
 1779   67f5650 / b2c75b6 Add avcodec_encode_audio2() and deprecate avcodec_encode_audio().
 1780           Add AVCodec.encode2().
 1781 
 1782 2012-01-12 - b18e17e / 3167dc9 - lavfi 2.59.100 / 2.15.0
 1783   Add a new installed header -- libavfilter/version.h -- with version macros.
 1784 
 1785 
 1786 -------- 8< --------- FFmpeg 0.9 was cut here -------- 8< ---------
 1787 
 1788 2011-12-08 - a502939 - lavfi 2.52.0
 1789   Add av_buffersink_poll_frame() to buffersink.h.
 1790 
 1791 2011-12-08 - 26c6fec - lavu 51.31.0
 1792   Add av_log_format_line.
 1793 
 1794 2011-12-03 - 976b095 - lavu 51.30.0
 1795   Add AVERROR_BUG.
 1796 
 1797 2011-11-24 - 573ffbb - lavu 51.28.1
 1798   Add av_get_alt_sample_fmt() to samplefmt.h.
 1799 
 1800 2011-11-03 - 96949da - lavu 51.23.0
 1801   Add av_strcasecmp() and av_strncasecmp() to avstring.h.
 1802 
 1803 2011-10-20 - b35e9e1 - lavu 51.22.0
 1804   Add av_strtok() to avstring.h.
 1805 
 1806 2012-01-03 - ad1c8dd / b73ec05 - lavu 51.34.100 / 51.21.0
 1807   Add av_popcount64
 1808 
 1809 2011-12-18 - 7c29313 / 8400b12 - lavc 53.46.1 / 53.28.1
 1810   Deprecate AVFrame.age. The field is unused.
 1811 
 1812 2011-12-12 - 8bc7fe4 / 5266045 - lavf 53.25.0 / 53.17.0
 1813   Add avformat_close_input().
 1814   Deprecate av_close_input_file() and av_close_input_stream().
 1815 
 1816 2011-12-09 - c59b80c / b2890f5 - lavu 51.32.0 / 51.20.0 - audioconvert.h
 1817   Expand the channel layout list.
 1818 
 1819 2011-12-02 - e4de716 / 0eea212 - lavc 53.40.0 / 53.25.0
 1820   Add nb_samples and extended_data fields to AVFrame.
 1821   Deprecate AVCODEC_MAX_AUDIO_FRAME_SIZE.
 1822   Deprecate avcodec_decode_audio3() in favor of avcodec_decode_audio4().
 1823   avcodec_decode_audio4() writes output samples to an AVFrame, which allows
 1824   audio decoders to use get_buffer().
 1825 
 1826 2011-12-04 - e4de716 / 560f773 - lavc 53.40.0 / 53.24.0
 1827   Change AVFrame.data[4]/base[4]/linesize[4]/error[4] to [8] at next major bump.
 1828   Change AVPicture.data[4]/linesize[4] to [8] at next major bump.
 1829   Change AVCodecContext.error[4] to [8] at next major bump.
 1830   Add AV_NUM_DATA_POINTERS to simplify the bump transition.
 1831 
 1832 2011-11-24 - lavu 51.29.0 / 51.19.0
 1833   92afb43 / bd97b2e - add planar RGB pixel formats
 1834   92afb43 / 6b0768e - add PIX_FMT_PLANAR and PIX_FMT_RGB pixel descriptions
 1835 
 1836 2011-11-23 - 8e576d5 / bbb46f3 - lavu 51.27.0 / 51.18.0
 1837   Add av_samples_get_buffer_size(), av_samples_fill_arrays(), and
 1838   av_samples_alloc(), to samplefmt.h.
 1839 
 1840 2011-11-23 - 8e576d5 / 8889cc4 - lavu 51.27.0 / 51.17.0
 1841   Add planar sample formats and av_sample_fmt_is_planar() to samplefmt.h.
 1842 
 1843 2011-11-19 - dbb38bc / f3a29b7 - lavc 53.36.0 / 53.21.0
 1844   Move some AVCodecContext fields to a new private struct, AVCodecInternal,
 1845   which is accessed from a new field, AVCodecContext.internal.
 1846   - fields moved:
 1847       AVCodecContext.internal_buffer       --> AVCodecInternal.buffer
 1848       AVCodecContext.internal_buffer_count --> AVCodecInternal.buffer_count
 1849       AVCodecContext.is_copy               --> AVCodecInternal.is_copy
 1850 
 1851 2011-11-16 - 8709ba9 / 6270671 - lavu 51.26.0 / 51.16.0
 1852   Add av_timegm()
 1853 
 1854 2011-11-13 - lavf 53.21.0 / 53.15.0
 1855   New interrupt callback API, allowing per-AVFormatContext/AVIOContext
 1856   interrupt callbacks.
 1857   5f268ca / 6aa0b98 Add AVIOInterruptCB struct and the interrupt_callback field to
 1858           AVFormatContext.
 1859   5f268ca / 1dee0ac Add avio_open2() with additional parameters. Those are
 1860           an interrupt callback and an options AVDictionary.
 1861           This will allow passing AVOptions to protocols after lavf
 1862           54.0.
 1863 
 1864 2011-11-06 - 13b7781 / ba04ecf - lavu 51.24.0 / 51.14.0
 1865   Add av_strcasecmp() and av_strncasecmp() to avstring.h.
 1866 
 1867 2011-11-06 - 13b7781 / 07b172f - lavu 51.24.0 / 51.13.0
 1868   Add av_toupper()/av_tolower()
 1869 
 1870 2011-11-05 - d8cab5c / b6d08f4 - lavf 53.19.0 / 53.13.0
 1871   Add avformat_network_init()/avformat_network_deinit()
 1872 
 1873 2011-10-27 - 6faf0a2 / 512557b - lavc 53.24.0 / 53.15.0
 1874   Remove avcodec_parse_frame.
 1875   Deprecate AVCodecContext.parse_only and CODEC_CAP_PARSE_ONLY.
 1876 
 1877 2011-10-19 - d049257 / 569129a - lavf 53.17.0 / 53.10.0
 1878   Add avformat_new_stream(). Deprecate av_new_stream().
 1879 
 1880 2011-10-13 - 91eb1b1 / b631fba - lavf 53.16.0 / 53.9.0
 1881   Add AVFMT_NO_BYTE_SEEK AVInputFormat flag.
 1882 
 1883 2011-10-12 - lavu 51.21.0 / 51.12.0
 1884   AVOptions API rewrite.
 1885 
 1886   - f884ef0 / 145f741 FF_OPT_TYPE* renamed to AV_OPT_TYPE_*
 1887   - new setting/getting functions with slightly different semantics:
 1888         f884ef0 / dac66da av_set_string3 -> av_opt_set
 1889                 av_set_double  -> av_opt_set_double
 1890                 av_set_q       -> av_opt_set_q
 1891                 av_set_int     -> av_opt_set_int
 1892 
 1893         f884ef0 / 41d9d51 av_get_string  -> av_opt_get
 1894                 av_get_double  -> av_opt_get_double
 1895                 av_get_q       -> av_opt_get_q
 1896                 av_get_int     -> av_opt_get_int
 1897 
 1898   - f884ef0 / 8c5dcaa trivial rename av_next_option -> av_opt_next
 1899   - f884ef0 / 641c7af new functions - av_opt_child_next, av_opt_child_class_next
 1900     and av_opt_find2()
 1901 
 1902 2011-09-22 - a70e787 - lavu 51.17.0
 1903   Add av_x_if_null().
 1904 
 1905 2011-09-18 - 645cebb - lavc 53.16.0
 1906   Add showall flag2
 1907 
 1908 2011-09-16 - ea8de10 - lavfi 2.42.0
 1909   Add avfilter_all_channel_layouts.
 1910 
 1911 2011-09-16 - 9899037 - lavfi 2.41.0
 1912   Rename avfilter_all_* function names to avfilter_make_all_*.
 1913 
 1914   In particular, apply the renames:
 1915   avfilter_all_formats         -> avfilter_make_all_formats
 1916   avfilter_all_channel_layouts -> avfilter_make_all_channel_layouts
 1917   avfilter_all_packing_formats -> avfilter_make_all_packing_formats
 1918 
 1919 2011-09-12 - 4381bdd - lavfi 2.40.0
 1920   Change AVFilterBufferRefAudioProps.sample_rate type from uint32_t to int.
 1921 
 1922 2011-09-12 - 2c03174 - lavfi 2.40.0
 1923   Simplify signature for avfilter_get_audio_buffer(), make it
 1924   consistent with avfilter_get_video_buffer().
 1925 
 1926 2011-09-06 - 4f7dfe1 - lavfi 2.39.0
 1927   Rename libavfilter/vsink_buffer.h to libavfilter/buffersink.h.
 1928 
 1929 2011-09-06 - c4415f6 - lavfi 2.38.0
 1930   Unify video and audio sink API.
 1931 
 1932   In particular, add av_buffersink_get_buffer_ref(), deprecate
 1933   av_vsink_buffer_get_video_buffer_ref() and change the value for the
 1934   opaque field passed to the abuffersink init function.
 1935 
 1936 2011-09-04 - 61e2e29 - lavu 51.16.0
 1937   Add av_asprintf().
 1938 
 1939 2011-08-22 - dacd827 - lavf 53.10.0
 1940   Add av_find_program_from_stream().
 1941 
 1942 2011-08-20 - 69e2c1a - lavu 51.13.0
 1943   Add av_get_media_type_string().
 1944 
 1945 2011-09-03 - 1889c67 / fb4ca26 - lavc 53.13.0
 1946                        lavf 53.11.0
 1947                        lsws  2.1.0
 1948   Add {avcodec,avformat,sws}_get_class().
 1949 
 1950 2011-08-03 - 1889c67 / c11fb82 - lavu 51.15.0
 1951   Add AV_OPT_SEARCH_FAKE_OBJ flag for av_opt_find() function.
 1952 
 1953 2011-08-14 - 323b930 - lavu 51.12.0
 1954   Add av_fifo_peek2(), deprecate av_fifo_peek().
 1955 
 1956 2011-08-26 - lavu 51.14.0 / 51.9.0
 1957   - 976a8b2 / add41de..976a8b2 / abc78a5 Do not include intfloat_readwrite.h,
 1958     mathematics.h, rational.h, pixfmt.h, or log.h from avutil.h.
 1959 
 1960 2011-08-16 - 27fbe31 / 48f9e45 - lavf 53.11.0 / 53.8.0
 1961   Add avformat_query_codec().
 1962 
 1963 2011-08-16 - 27fbe31 / bca06e7 - lavc 53.11.0
 1964   Add avcodec_get_type().
 1965 
 1966 2011-08-06 - 0cb233c / 2f63440 - lavf 53.7.0
 1967   Add error_recognition to AVFormatContext.
 1968 
 1969 2011-08-02 - 1d186e9 / 9d39cbf - lavc 53.9.1
 1970   Add AV_PKT_FLAG_CORRUPT AVPacket flag.
 1971 
 1972 2011-07-16 - b57df29 - lavfi 2.27.0
 1973   Add audio packing negotiation fields and helper functions.
 1974 
 1975   In particular, add AVFilterPacking enum, planar, in_packings and
 1976   out_packings fields to AVFilterLink, and the functions:
 1977   avfilter_set_common_packing_formats()
 1978   avfilter_all_packing_formats()
 1979 
 1980 2011-07-10 - 3602ad7 / a67c061 - lavf 53.6.0
 1981   Add avformat_find_stream_info(), deprecate av_find_stream_info().
 1982   NOTE: this was backported to 0.7
 1983 
 1984 2011-07-10 - 3602ad7 / 0b950fe - lavc 53.8.0
 1985   Add avcodec_open2(), deprecate avcodec_open().
 1986   NOTE: this was backported to 0.7
 1987 
 1988   Add avcodec_alloc_context3. Deprecate avcodec_alloc_context() and
 1989   avcodec_alloc_context2().
 1990 
 1991 2011-07-01 - b442ca6 - lavf 53.5.0 - avformat.h
 1992   Add function av_get_output_timestamp().
 1993 
 1994 2011-06-28 - 5129336 - lavu 51.11.0 - avutil.h
 1995   Define the AV_PICTURE_TYPE_NONE value in AVPictureType enum.
 1996 
 1997 
 1998 -------- 8< --------- FFmpeg 0.7 was cut here -------- 8< ---------
 1999 
 2000 
 2001 
 2002 -------- 8< --------- FFmpeg 0.8 was cut here -------- 8< ---------
 2003 
 2004 2011-06-19 - fd2c0a5 - lavfi 2.23.0 - avfilter.h
 2005   Add layout negotiation fields and helper functions.
 2006 
 2007   In particular, add in_chlayouts and out_chlayouts to AVFilterLink,
 2008   and the functions:
 2009   avfilter_set_common_sample_formats()
 2010   avfilter_set_common_channel_layouts()
 2011   avfilter_all_channel_layouts()
 2012 
 2013 2011-06-19 - 527ca39 - lavfi 2.22.0 - AVFilterFormats
 2014   Change type of AVFilterFormats.formats from int * to int64_t *,
 2015   and update formats handling API accordingly.
 2016 
 2017   avfilter_make_format_list() still takes a int32_t array and converts
 2018   it to int64_t. A new function, avfilter_make_format64_list(), that
 2019   takes int64_t arrays has been added.
 2020 
 2021 2011-06-19 - 44f669e - lavfi 2.21.0 - vsink_buffer.h
 2022   Add video sink buffer and vsink_buffer.h public header.
 2023 
 2024 2011-06-12 - 9fdf772 - lavfi 2.18.0 - avcodec.h
 2025   Add avfilter_get_video_buffer_ref_from_frame() function in
 2026   libavfilter/avcodec.h.
 2027 
 2028 2011-06-12 - c535494 - lavfi 2.17.0 - avfiltergraph.h
 2029   Add avfilter_inout_alloc() and avfilter_inout_free() functions.
 2030 
 2031 2011-06-12 - 6119b23 - lavfi 2.16.0 - avfilter_graph_parse()
 2032   Change avfilter_graph_parse() signature.
 2033 
 2034 2011-06-23 - 686959e / 67e9ae1 - lavu 51.10.0 / 51.8.0 - attributes.h
 2035   Add av_printf_format().
 2036 
 2037 2011-06-16 - 2905e3f / 05e84c9, 2905e3f / 25de595 - lavf 53.4.0 / 53.2.0 - avformat.h
 2038   Add avformat_open_input and avformat_write_header().
 2039   Deprecate av_open_input_stream, av_open_input_file,
 2040   AVFormatParameters and av_write_header.
 2041 
 2042 2011-06-16 - 2905e3f / 7e83e1c, 2905e3f / dc59ec5 - lavu 51.9.0 / 51.7.0 - opt.h
 2043   Add av_opt_set_dict() and av_opt_find().
 2044   Deprecate av_find_opt().
 2045   Add AV_DICT_APPEND flag.
 2046 
 2047 2011-06-10 - 45fb647 / cb7c11c - lavu 51.6.0 - opt.h
 2048   Add av_opt_flag_is_set().
 2049 
 2050 2011-06-10 - c381960 - lavfi 2.15.0 - avfilter_get_audio_buffer_ref_from_arrays
 2051   Add avfilter_get_audio_buffer_ref_from_arrays() to avfilter.h.
 2052 
 2053 2011-06-09 - f9ecb84 / d9f80ea - lavu 51.8.0 - AVMetadata
 2054   Move AVMetadata from lavf to lavu and rename it to
 2055   AVDictionary -- new installed header dict.h.
 2056   All av_metadata_* functions renamed to av_dict_*.
 2057 
 2058 2011-06-07 - d552f61 / a6703fa - lavu 51.8.0 - av_get_bytes_per_sample()
 2059   Add av_get_bytes_per_sample() in libavutil/samplefmt.h.
 2060   Deprecate av_get_bits_per_sample_fmt().
 2061 
 2062 2011-06-05 - f956924 / b39b062 - lavu 51.8.0 - opt.h
 2063   Add av_opt_free convenience function.
 2064 
 2065 2011-06-06 - 95a0242 - lavfi 2.14.0 - AVFilterBufferRefAudioProps
 2066   Remove AVFilterBufferRefAudioProps.size, and use nb_samples in
 2067   avfilter_get_audio_buffer() and avfilter_default_get_audio_buffer() in
 2068   place of size.
 2069 
 2070 2011-06-06 - 0bc2cca - lavu 51.6.0 - av_samples_alloc()
 2071   Switch nb_channels and nb_samples parameters order in
 2072   av_samples_alloc().
 2073 
 2074 2011-06-06 - e1c7414 - lavu 51.5.0 - av_samples_*
 2075   Change the data layout created by av_samples_fill_arrays() and
 2076   av_samples_alloc().
 2077 
 2078 2011-06-06 - 27bcf55 - lavfi 2.13.0 - vsrc_buffer.h
 2079   Make av_vsrc_buffer_add_video_buffer_ref() accepts an additional
 2080   flags parameter in input.
 2081 
 2082 2011-06-03 - e977ca2 - lavfi 2.12.0 - avfilter_link_free()
 2083   Add avfilter_link_free() function.
 2084 
 2085 2011-06-02 - 5ad38d9 - lavu 51.4.0 - av_force_cpu_flags()
 2086   Add av_cpu_flags() in libavutil/cpu.h.
 2087 
 2088 2011-05-28 - e71f260 - lavu 51.3.0 - pixdesc.h
 2089   Add av_get_pix_fmt_name() in libavutil/pixdesc.h, and deprecate
 2090   avcodec_get_pix_fmt_name() in libavcodec/avcodec.h in its favor.
 2091 
 2092 2011-05-25 - 39e4206 / 30315a8 - lavf 53.3.0 - avformat.h
 2093   Add fps_probe_size to AVFormatContext.
 2094 
 2095 2011-05-22 - 5ecdfd0 - lavf 53.2.0 - avformat.h
 2096   Introduce avformat_alloc_output_context2() and deprecate
 2097   avformat_alloc_output_context().
 2098 
 2099 2011-05-22 - 83db719 - lavfi 2.10.0 - vsrc_buffer.h
 2100   Make libavfilter/vsrc_buffer.h public.
 2101 
 2102 2011-05-19 - c000a9f - lavfi 2.8.0 - avcodec.h
 2103   Add av_vsrc_buffer_add_frame() to libavfilter/avcodec.h.
 2104 
 2105 2011-05-14 - 9fdf772 - lavfi 2.6.0 - avcodec.h
 2106   Add avfilter_get_video_buffer_ref_from_frame() to libavfilter/avcodec.h.
 2107 
 2108 2011-05-18 - 75a37b5 / 64150ff - lavc 53.7.0 - AVCodecContext.request_sample_fmt
 2109   Add request_sample_fmt field to AVCodecContext.
 2110 
 2111 2011-05-10 - 59eb12f / 188dea1 - lavc 53.6.0 - avcodec.h
 2112   Deprecate AVLPCType and the following fields in
 2113   AVCodecContext: lpc_coeff_precision, prediction_order_method,
 2114   min_partition_order, max_partition_order, lpc_type, lpc_passes.
 2115   Corresponding FLAC encoder options should be used instead.
 2116 
 2117 2011-05-07 - 9fdf772 - lavfi 2.5.0 - avcodec.h
 2118   Add libavfilter/avcodec.h header and avfilter_copy_frame_props()
 2119   function.
 2120 
 2121 2011-05-07 - 18ded93 - lavc 53.5.0 - AVFrame
 2122   Add format field to AVFrame.
 2123 
 2124 2011-05-07 - 22333a6 - lavc 53.4.0 - AVFrame
 2125   Add width and height fields to AVFrame.
 2126 
 2127 2011-05-01 - 35fe66a - lavfi 2.4.0 - avfilter.h
 2128   Rename AVFilterBufferRefVideoProps.pixel_aspect to
 2129   sample_aspect_ratio.
 2130 
 2131 2011-05-01 - 77e9dee - lavc 53.3.0 - AVFrame
 2132   Add a sample_aspect_ratio field to AVFrame.
 2133 
 2134 2011-05-01 - 1ba5727 - lavc 53.2.0 - AVFrame
 2135   Add a pkt_pos field to AVFrame.
 2136 
 2137 2011-04-29 - 35ceaa7 - lavu 51.2.0 - mem.h
 2138   Add av_dynarray_add function for adding
 2139   an element to a dynamic array.
 2140 
 2141 2011-04-26 - d7e5aeb / bebe72f - lavu 51.1.0 - avutil.h
 2142   Add AVPictureType enum and av_get_picture_type_char(), deprecate
 2143   FF_*_TYPE defines and av_get_pict_type_char() defined in
 2144   libavcodec/avcodec.h.
 2145 
 2146 2011-04-26 - d7e5aeb / 10d3940 - lavfi 2.3.0 - avfilter.h
 2147   Add pict_type and key_frame fields to AVFilterBufferRefVideo.
 2148 
 2149 2011-04-26 - d7e5aeb / 7a11c82 - lavfi 2.2.0 - vsrc_buffer
 2150   Add sample_aspect_ratio fields to vsrc_buffer arguments
 2151 
 2152 2011-04-21 - 8772156 / 94f7451 - lavc 53.1.0 - avcodec.h
 2153   Add CODEC_CAP_SLICE_THREADS for codecs supporting sliced threading.
 2154 
 2155 2011-04-15 - lavc 52.120.0 - avcodec.h
 2156   AVPacket structure got additional members for passing side information:
 2157     c407984 / 4de339e introduce side information for AVPacket
 2158     c407984 / 2d8591c make containers pass palette change in AVPacket
 2159 
 2160 2011-04-12 - lavf 52.107.0 - avio.h
 2161   Avio cleanup, part II - deprecate the entire URLContext API:
 2162     c55780d / 175389c add avio_check as a replacement for url_exist
 2163     9891004 / ff1ec0c add avio_pause and avio_seek_time as replacements
 2164             for _av_url_read_fseek/fpause
 2165     d4d0932 / cdc6a87 deprecate av_protocol_next(), avio_enum_protocols
 2166             should be used instead.
 2167     c88caa5 / 80c6e23 rename url_set_interrupt_cb->avio_set_interrupt_cb.
 2168     c88caa5 / f87b1b3 rename open flags: URL_* -> AVIO_*
 2169     d4d0932 / f8270bb add avio_enum_protocols.
 2170     d4d0932 / 5593f03 deprecate URLProtocol.
 2171     d4d0932 / c486dad deprecate URLContext.
 2172     d4d0932 / 026e175 deprecate the typedef for URLInterruptCB
 2173     c88caa5 / 8e76a19 deprecate av_register_protocol2.
 2174     11d7841 / b840484 deprecate URL_PROTOCOL_FLAG_NESTED_SCHEME
 2175     11d7841 / 1305d93 deprecate av_url_read_seek
 2176     11d7841 / fa104e1 deprecate av_url_read_pause
 2177     434f248 / 727c7aa deprecate url_get_filename().
 2178     434f248 / 5958df3 deprecate url_max_packet_size().
 2179     434f248 / 1869ea0 deprecate url_get_file_handle().
 2180     434f248 / 32a97d4 deprecate url_filesize().
 2181     434f248 / e52a914 deprecate url_close().
 2182     434f248 / 58a48c6 deprecate url_seek().
 2183     434f248 / 925e908 deprecate url_write().
 2184     434f248 / dce3756 deprecate url_read_complete().
 2185     434f248 / bc371ac deprecate url_read().
 2186     434f248 / 0589da0 deprecate url_open().
 2187     434f248 / 62eaaea deprecate url_connect.
 2188     434f248 / 5652bb9 deprecate url_alloc.
 2189     434f248 / 333e894 deprecate url_open_protocol
 2190     434f248 / e230705 deprecate url_poll and URLPollEntry
 2191 
 2192 2011-04-08 - lavf 52.106.0 - avformat.h
 2193   Minor avformat.h cleanup:
 2194     d4d0932 / a9bf9d8 deprecate av_guess_image2_codec
 2195     d4d0932 / c3675df rename avf_sdp_create->av_sdp_create
 2196 
 2197 2011-04-03 - lavf 52.105.0 - avio.h
 2198   Large-scale renaming/deprecating of AVIOContext-related functions:
 2199     2cae980 / 724f6a0 deprecate url_fdopen
 2200     2cae980 / 403ee83 deprecate url_open_dyn_packet_buf
 2201     2cae980 / 6dc7d80 rename url_close_dyn_buf       -> avio_close_dyn_buf
 2202     2cae980 / b92c545 rename url_open_dyn_buf        -> avio_open_dyn_buf
 2203     2cae980 / 8978fed introduce an AVIOContext.seekable field as a replacement for
 2204             AVIOContext.is_streamed and url_is_streamed()
 2205     1caa412 / b64030f deprecate get_checksum()
 2206     1caa412 / 4c4427a deprecate init_checksum()
 2207     2fd41c9 / 4ec153b deprecate udp_set_remote_url/get_local_port
 2208     4fa0e24 / 933e90a deprecate av_url_read_fseek/fpause
 2209     4fa0e24 / 8d9769a deprecate url_fileno
 2210     0fecf26 / b7f2fdd rename put_flush_packet -> avio_flush
 2211     0fecf26 / 35f1023 deprecate url_close_buf
 2212     0fecf26 / 83fddae deprecate url_open_buf
 2213     0fecf26 / d9d86e0 rename url_fprintf -> avio_printf
 2214     0fecf26 / 59f65d9 deprecate url_setbufsize
 2215     6947b0c / 3e68b3b deprecate url_ferror
 2216     e8bb2e2 deprecate url_fget_max_packet_size
 2217     76aa876 rename url_fsize -> avio_size
 2218     e519753 deprecate url_fgetc
 2219     655e45e deprecate url_fgets
 2220     a2704c9 rename url_ftell -> avio_tell
 2221     e16ead0 deprecate get_strz() in favor of avio_get_str
 2222     0300db8,2af07d3 rename url_fskip -> avio_skip
 2223     6b4aa5d rename url_fseek -> avio_seek
 2224     61840b4 deprecate put_tag
 2225     22a3212 rename url_fopen/fclose -> avio_open/close.
 2226     0ac8e2b deprecate put_nbyte
 2227     77eb550 rename put_byte          -> avio_w8
 2228                    put_[b/l]e<type>  -> avio_w[b/l]<type>
 2229                    put_buffer        -> avio_write
 2230     b7effd4 rename get_byte          -> avio_r8,
 2231                    get_[b/l]e<type>  -> avio_r[b/l]<type>
 2232                    get_buffer        -> avio_read
 2233     b3db9ce deprecate get_partial_buffer
 2234     8d9ac96 rename av_alloc_put_byte -> avio_alloc_context
 2235 
 2236 2011-03-25 - 27ef7b1 / 34b47d7 - lavc 52.115.0 - AVCodecContext.audio_service_type
 2237   Add audio_service_type field to AVCodecContext.
 2238 
 2239 2011-03-17 - e309fdc - lavu 50.40.0 - pixfmt.h
 2240   Add PIX_FMT_BGR48LE and PIX_FMT_BGR48BE pixel formats
 2241 
 2242 2011-03-02 - 863c471 - lavf  52.103.0 - av_pkt_dump2, av_pkt_dump_log2
 2243   Add new functions av_pkt_dump2, av_pkt_dump_log2 that uses the
 2244   source stream timebase for outputting timestamps. Deprecate
 2245   av_pkt_dump and av_pkt_dump_log.
 2246 
 2247 2011-02-20 - e731b8d - lavf  52.102.0 - avio.h
 2248   * e731b8d - rename init_put_byte() to ffio_init_context(), deprecating the
 2249               original, and move it to a private header so it is no longer
 2250               part of our public API. Instead, use av_alloc_put_byte().
 2251   * ae628ec - rename ByteIOContext to AVIOContext.
 2252 
 2253 2011-02-16 - 09d171b - lavf  52.101.0 - avformat.h
 2254                        lavu  52.39.0  - parseutils.h
 2255   * 610219a - Add av_ prefix to dump_format().
 2256   * f6c7375 - Replace parse_date() in lavf with av_parse_time() in lavu.
 2257   * ab0287f - Move find_info_tag from lavf to lavu and add av_prefix to it.
 2258 
 2259 2011-02-15 - lavu 52.38.0 - merge libavcore
 2260   libavcore is merged back completely into libavutil
 2261 
 2262 2011-02-10 - 55bad0c - lavc 52.113.0 - vbv_delay
 2263   Add vbv_delay field to AVCodecContext
 2264 
 2265 2011-02-14 - 24a83bd - lavf 52.100.0 - AV_DISPOSITION_CLEAN_EFFECTS
 2266   Add AV_DISPOSITION_CLEAN_EFFECTS disposition flag.
 2267 
 2268 2011-02-14 - 910b5b8 - lavfi 1.76.0 - AVFilterLink sample_aspect_ratio
 2269   Add sample_aspect_ratio field to AVFilterLink.
 2270 
 2271 2011-02-10 - 12c14cd - lavf 52.99.0 - AVStream.disposition
 2272   Add AV_DISPOSITION_HEARING_IMPAIRED and AV_DISPOSITION_VISUAL_IMPAIRED.
 2273 
 2274 2011-02-09 - c0b102c - lavc 52.112.0 - avcodec_thread_init()
 2275   Deprecate avcodec_thread_init()/avcodec_thread_free() use; instead
 2276   set thread_count before calling avcodec_open.
 2277 
 2278 2011-02-09 - 37b00b4 - lavc 52.111.0 - threading API
 2279   Add CODEC_CAP_FRAME_THREADS with new restrictions on get_buffer()/
 2280   release_buffer()/draw_horiz_band() callbacks for appropriate codecs.
 2281   Add thread_type and active_thread_type fields to AVCodecContext.
 2282 
 2283 2011-02-08 - 3940caa - lavf 52.98.0 - av_probe_input_buffer
 2284   Add av_probe_input_buffer() to avformat.h for probing format from a
 2285   ByteIOContext.
 2286 
 2287 2011-02-06 - fe174fc - lavf 52.97.0 - avio.h
 2288   Add flag for non-blocking protocols: URL_FLAG_NONBLOCK
 2289 
 2290 2011-02-04 - f124b08 - lavf 52.96.0 - avformat_free_context()
 2291   Add avformat_free_context() in avformat.h.
 2292 
 2293 2011-02-03 - f5b82f4 - lavc 52.109.0 - add CODEC_ID_PRORES
 2294   Add CODEC_ID_PRORES to avcodec.h.
 2295 
 2296 2011-02-03 - fe9a3fb - lavc 52.109.0 - H.264 profile defines
 2297   Add defines for H.264 * Constrained Baseline and Intra profiles
 2298 
 2299 2011-02-02 - lavf 52.95.0
 2300   * 50196a9 - add a new installed header version.h.
 2301   * 4efd5cf, dccbd97, 93b78d1 - add several variants of public
 2302     avio_{put,get}_str* functions.  Deprecate corresponding semi-public
 2303     {put,get}_str*.
 2304 
 2305 2011-02-02 - dfd2a00 - lavu 50.37.0 - log.h
 2306   Make av_dlog public.
 2307 
 2308 2011-01-31 - 7b3ea55 - lavfi 1.76.0 - vsrc_buffer
 2309   Add sample_aspect_ratio fields to vsrc_buffer arguments
 2310 
 2311 2011-01-31 - 910b5b8 - lavfi 1.75.0 - AVFilterLink sample_aspect_ratio
 2312   Add sample_aspect_ratio field to AVFilterLink.
 2313 
 2314 2011-01-15 - a242ac3 - lavfi 1.74.0 - AVFilterBufferRefAudioProps
 2315   Rename AVFilterBufferRefAudioProps.samples_nb to nb_samples.
 2316 
 2317 2011-01-14 - 7f88a5b - lavf 52.93.0 - av_metadata_copy()
 2318   Add av_metadata_copy() in avformat.h.
 2319 
 2320 2011-01-07 - 81c623f - lavc 52.107.0 - deprecate reordered_opaque
 2321   Deprecate reordered_opaque in favor of pkt_pts/dts.
 2322 
 2323 2011-01-07 - 1919fea - lavc 52.106.0 - pkt_dts
 2324   Add pkt_dts to AVFrame, this will in the future allow multithreading decoders
 2325   to not mess up dts.
 2326 
 2327 2011-01-07 - 393cbb9 - lavc 52.105.0 - pkt_pts
 2328   Add pkt_pts to AVFrame.
 2329 
 2330 2011-01-07 - 060ec0a - lavc 52.104.0 - av_get_profile_name()
 2331   Add av_get_profile_name to libavcodec/avcodec.h.
 2332 
 2333 2010-12-27 - 0ccabee - lavfi 1.71.0 - AV_PERM_NEG_LINESIZES
 2334   Add AV_PERM_NEG_LINESIZES in avfilter.h.
 2335 
 2336 2010-12-27 - 9128ae0 - lavf 52.91.0 - av_find_best_stream()
 2337   Add av_find_best_stream to libavformat/avformat.h.
 2338 
 2339 2010-12-27 - 107a7e3 - lavf 52.90.0
 2340   Add AVFMT_NOSTREAMS flag for formats with no streams,
 2341   like e.g. text metadata.
 2342 
 2343 2010-12-22 - 0328b9e - lavu 50.36.0 - file.h
 2344   Add functions av_file_map() and av_file_unmap() in file.h.
 2345 
 2346 2010-12-19 - 0bc55f5 - lavu 50.35.0 - error.h
 2347   Add "not found" error codes:
 2348   AVERROR_DEMUXER_NOT_FOUND
 2349   AVERROR_MUXER_NOT_FOUND
 2350   AVERROR_DECODER_NOT_FOUND
 2351   AVERROR_ENCODER_NOT_FOUND
 2352   AVERROR_PROTOCOL_NOT_FOUND
 2353   AVERROR_FILTER_NOT_FOUND
 2354   AVERROR_BSF_NOT_FOUND
 2355   AVERROR_STREAM_NOT_FOUND
 2356 
 2357 2010-12-09 - c61cdd0 - lavcore 0.16.0 - avcore.h
 2358   Move AV_NOPTS_VALUE, AV_TIME_BASE, AV_TIME_BASE_Q symbols from
 2359   avcodec.h to avcore.h.
 2360 
 2361 2010-12-04 - 16cfc96 - lavc 52.98.0 - CODEC_CAP_NEG_LINESIZES
 2362   Add CODEC_CAP_NEG_LINESIZES codec capability flag in avcodec.h.
 2363 
 2364 2010-12-04 - bb4afa1 - lavu 50.34.0 - av_get_pix_fmt_string()
 2365   Deprecate avcodec_pix_fmt_string() in favor of
 2366   pixdesc.h/av_get_pix_fmt_string().
 2367 
 2368 2010-12-04 - 4da12e3 - lavcore 0.15.0 - av_image_alloc()
 2369   Add av_image_alloc() to libavcore/imgutils.h.
 2370 
 2371 2010-12-02 - 037be76 - lavfi 1.67.0 - avfilter_graph_create_filter()
 2372   Add function avfilter_graph_create_filter() in avfiltergraph.h.
 2373 
 2374 2010-11-25 - 4723bc2 - lavfi 1.65.0 - avfilter_get_video_buffer_ref_from_arrays()
 2375   Add function avfilter_get_video_buffer_ref_from_arrays() in
 2376   avfilter.h.
 2377 
 2378 2010-11-21 - 176a615 - lavcore 0.14.0 - audioconvert.h
 2379   Add a public audio channel API in audioconvert.h, and deprecate the
 2380   corresponding functions in libavcodec:
 2381   avcodec_get_channel_name()
 2382   avcodec_get_channel_layout()
 2383   avcodec_get_channel_layout_string()
 2384   avcodec_channel_layout_num_channels()
 2385   and the CH_* macros defined in libavcodec/avcodec.h.
 2386 
 2387 2010-11-21 - 6bfc268 - lavf 52.85.0 - avformat.h
 2388   Add av_append_packet().
 2389 
 2390 2010-11-21 - a08d918 - lavc 52.97.0 - avcodec.h
 2391   Add av_grow_packet().
 2392 
 2393 2010-11-17 - 0985e1a - lavcore 0.13.0 - parseutils.h
 2394   Add av_parse_color() declared in libavcore/parseutils.h.
 2395 
 2396 2010-11-13 - cb2c971 - lavc 52.95.0 - AVCodecContext
 2397   Add AVCodecContext.subtitle_header and AVCodecContext.subtitle_header_size
 2398   fields.
 2399 
 2400 2010-11-13 - 5aaea02 - lavfi 1.62.0 - avfiltergraph.h
 2401   Make avfiltergraph.h public.
 2402 
 2403 2010-11-13 - 4fcbb2a - lavfi 1.61.0 - avfiltergraph.h
 2404   Remove declarations from avfiltergraph.h for the functions:
 2405   avfilter_graph_check_validity()
 2406   avfilter_graph_config_links()
 2407   avfilter_graph_config_formats()
 2408   which are now internal.
 2409   Use avfilter_graph_config() instead.
 2410 
 2411 2010-11-08 - d2af720 - lavu 50.33.0 - eval.h
 2412   Deprecate functions:
 2413   av_parse_and_eval_expr(),
 2414   av_parse_expr(),
 2415   av_eval_expr(),
 2416   av_free_expr(),
 2417   in favor of the functions:
 2418   av_expr_parse_and_eval(),
 2419   av_expr_parse(),
 2420   av_expr_eval(),
 2421   av_expr_free().
 2422 
 2423 2010-11-08 - 24de0ed - lavfi 1.59.0 - avfilter_free()
 2424   Rename avfilter_destroy() to avfilter_free().
 2425   This change breaks libavfilter API/ABI.
 2426 
 2427 2010-11-07 - 1e80a0e - lavfi 1.58.0 - avfiltergraph.h
 2428   Remove graphparser.h header, move AVFilterInOut and
 2429   avfilter_graph_parse() declarations to libavfilter/avfiltergraph.h.
 2430 
 2431 2010-11-07 - 7313132 - lavfi 1.57.0 - AVFilterInOut
 2432   Rename field AVFilterInOut.filter to AVFilterInOut.filter_ctx.
 2433   This change breaks libavfilter API.
 2434 
 2435 2010-11-04 - 97dd1e4 - lavfi 1.56.0 - avfilter_graph_free()
 2436   Rename avfilter_graph_destroy() to avfilter_graph_free().
 2437   This change breaks libavfilter API/ABI.
 2438 
 2439 2010-11-04 - e15aeea - lavfi 1.55.0 - avfilter_graph_alloc()
 2440   Add avfilter_graph_alloc() to libavfilter/avfiltergraph.h.
 2441 
 2442 2010-11-02 - 6f84cd1 - lavcore 0.12.0 - av_get_bits_per_sample_fmt()
 2443   Add av_get_bits_per_sample_fmt() to libavcore/samplefmt.h and
 2444   deprecate av_get_bits_per_sample_format().
 2445 
 2446 2010-11-02 - d63e456 - lavcore 0.11.0 - samplefmt.h
 2447   Add sample format functions in libavcore/samplefmt.h:
 2448   av_get_sample_fmt_name(),
 2449   av_get_sample_fmt(),
 2450   av_get_sample_fmt_string(),
 2451   and deprecate the corresponding libavcodec/audioconvert.h functions:
 2452   avcodec_get_sample_fmt_name(),
 2453   avcodec_get_sample_fmt(),
 2454   avcodec_sample_fmt_string().
 2455 
 2456 2010-11-02 - 262d1c5 - lavcore 0.10.0 - samplefmt.h
 2457   Define enum AVSampleFormat in libavcore/samplefmt.h, deprecate enum
 2458   SampleFormat.
 2459 
 2460 2010-10-16 - 2a24df9 - lavfi 1.52.0 - avfilter_graph_config()
 2461   Add the function avfilter_graph_config() in avfiltergraph.h.
 2462 
 2463 2010-10-15 - 03700d3 - lavf 52.83.0 - metadata API
 2464   Change demuxers to export metadata in generic format and
 2465   muxers to accept generic format. Deprecate the public
 2466   conversion API.
 2467 
 2468 2010-10-10 - 867ae7a - lavfi 1.49.0 - AVFilterLink.time_base
 2469   Add time_base field to AVFilterLink.
 2470 
 2471 2010-09-27 - c85eef4 - lavu 50.31.0 - av_set_options_string()
 2472   Move av_set_options_string() from libavfilter/parseutils.h to
 2473   libavutil/opt.h.
 2474 
 2475 2010-09-27 - acc0490 - lavfi 1.47.0 - AVFilterLink
 2476   Make the AVFilterLink fields srcpad and dstpad store the pointers to
 2477   the source and destination pads, rather than their indexes.
 2478 
 2479 2010-09-27 - 372e288 - lavu 50.30.0 - av_get_token()
 2480   Move av_get_token() from libavfilter/parseutils.h to
 2481   libavutil/avstring.h.
 2482 
 2483 2010-09-26 - 635d4ae - lsws 0.12.0 - swscale.h
 2484   Add the functions sws_alloc_context() and sws_init_context().
 2485 
 2486 2010-09-26 - 6ed0404 - lavu 50.29.0 - opt.h
 2487   Move libavcodec/opt.h to libavutil/opt.h.
 2488 
 2489 2010-09-24 - 1c1c80f - lavu 50.28.0 - av_log_set_flags()
 2490   Default of av_log() changed due to many problems to the old no repeat
 2491   detection. Read the docs of AV_LOG_SKIP_REPEATED in log.h before
 2492   enabling it for your app!.
 2493 
 2494 2010-09-24 - f66eb58 - lavc 52.90.0 - av_opt_show2()
 2495   Deprecate av_opt_show() in favor or av_opt_show2().
 2496 
 2497 2010-09-14 - bc6f0af - lavu 50.27.0 - av_popcount()
 2498   Add av_popcount() to libavutil/common.h.
 2499 
 2500 2010-09-08 - c6c98d0 - lavu 50.26.0 - av_get_cpu_flags()
 2501   Add av_get_cpu_flags().
 2502 
 2503 2010-09-07 - 34017fd - lavcore 0.9.0 - av_image_copy()
 2504   Add av_image_copy().
 2505 
 2506 2010-09-07 - 9686abb - lavcore 0.8.0 - av_image_copy_plane()
 2507   Add av_image_copy_plane().
 2508 
 2509 2010-09-07 - 9b7269e - lavcore 0.7.0 - imgutils.h
 2510   Adopt hierarchical scheme for the imgutils.h function names,
 2511   deprecate the old names.
 2512 
 2513 2010-09-04 - 7160bb7 - lavu 50.25.0 - AV_CPU_FLAG_*
 2514   Deprecate the FF_MM_* flags defined in libavcodec/avcodec.h in favor
 2515   of the AV_CPU_FLAG_* flags defined in libavutil/cpu.h.
 2516 
 2517 2010-08-26 - 5da19b5 - lavc 52.87.0 - avcodec_get_channel_layout()
 2518   Add avcodec_get_channel_layout() in audioconvert.h.
 2519 
 2520 2010-08-20 - e344336 - lavcore 0.6.0 - av_fill_image_max_pixsteps()
 2521   Rename av_fill_image_max_pixstep() to av_fill_image_max_pixsteps().
 2522 
 2523 2010-08-18 - a6ddf8b - lavcore 0.5.0 - av_fill_image_max_pixstep()
 2524   Add av_fill_image_max_pixstep() in imgutils.h.
 2525 
 2526 2010-08-17 - 4f2d2e4 - lavu 50.24.0 - AV_NE()
 2527   Add the AV_NE macro.
 2528 
 2529 2010-08-17 - ad2c950 - lavfi 1.36.0 - audio framework
 2530   Implement AVFilterBufferRefAudioProps struct for audio properties,
 2531   get_audio_buffer(), filter_samples() functions and related changes.
 2532 
 2533 2010-08-12 - 81c1eca - lavcore 0.4.0 - av_get_image_linesize()
 2534   Add av_get_image_linesize() in imgutils.h.
 2535 
 2536 2010-08-11 - c1db7bf - lavfi 1.34.0 - AVFilterBufferRef
 2537   Resize data and linesize arrays in AVFilterBufferRef to 8.
 2538 
 2539   This change breaks libavfilter API/ABI.
 2540 
 2541 2010-08-11 - 9f08d80 - lavc 52.85.0 - av_picture_data_copy()
 2542   Add av_picture_data_copy in avcodec.h.
 2543 
 2544 2010-08-11 - 84c0386 - lavfi 1.33.0 - avfilter_open()
 2545   Change avfilter_open() signature:
 2546   AVFilterContext *avfilter_open(AVFilter *filter, const char *inst_name) ->
 2547   int avfilter_open(AVFilterContext **filter_ctx, AVFilter *filter, const char *inst_name);
 2548 
 2549   This change breaks libavfilter API/ABI.
 2550 
 2551 2010-08-11 - cc80caf - lavfi 1.32.0 - AVFilterBufferRef
 2552   Add a type field to AVFilterBufferRef, and move video specific
 2553   properties to AVFilterBufferRefVideoProps.
 2554 
 2555   This change breaks libavfilter API/ABI.
 2556 
 2557 2010-08-07 - 5d4890d - lavfi 1.31.0 - AVFilterLink
 2558   Rename AVFilterLink fields:
 2559   AVFilterLink.srcpic    ->  AVFilterLink.src_buf
 2560   AVFilterLink.cur_pic   ->  AVFilterLink.cur_buf
 2561   AVFilterLink.outpic    ->  AVFilterLink.out_buf
 2562 
 2563 2010-08-07 - 7fce481 - lavfi 1.30.0
 2564   Rename functions and fields:
 2565   avfilter_(un)ref_pic       -> avfilter_(un)ref_buffer
 2566   avfilter_copy_picref_props -> avfilter_copy_buffer_ref_props
 2567   AVFilterBufferRef.pic      -> AVFilterBufferRef.buffer
 2568 
 2569 2010-08-07 - ecc8dad - lavfi 1.29.0 - AVFilterBufferRef
 2570   Rename AVFilterPicRef to AVFilterBufferRef.
 2571 
 2572 2010-08-07 - d54e094 - lavfi 1.28.0 - AVFilterBuffer
 2573   Move format field from AVFilterBuffer to AVFilterPicRef.
 2574 
 2575 2010-08-06 - bf176f5 - lavcore 0.3.0 - av_check_image_size()
 2576   Deprecate avcodec_check_dimensions() in favor of the function
 2577   av_check_image_size() defined in libavcore/imgutils.h.
 2578 
 2579 2010-07-30 - 56b5e9d - lavfi 1.27.0 - AVFilterBuffer
 2580   Increase size of the arrays AVFilterBuffer.data and
 2581   AVFilterBuffer.linesize from 4 to 8.
 2582 
 2583   This change breaks libavfilter ABI.
 2584 
 2585 2010-07-29 - e7bd48a - lavcore 0.2.0 - imgutils.h
 2586   Add functions av_fill_image_linesizes() and
 2587   av_fill_image_pointers(), declared in libavcore/imgutils.h.
 2588 
 2589 2010-07-27 - 126b638 - lavcore 0.1.0 - parseutils.h
 2590   Deprecate av_parse_video_frame_size() and av_parse_video_frame_rate()
 2591   defined in libavcodec in favor of the newly added functions
 2592   av_parse_video_size() and av_parse_video_rate() declared in
 2593   libavcore/parseutils.h.
 2594 
 2595 2010-07-23 - 4485247 - lavu 50.23.0 - mathematics.h
 2596   Add the M_PHI constant definition.
 2597 
 2598 2010-07-22 - bdab614 - lavfi 1.26.0 - media format generalization
 2599   Add a type field to AVFilterLink.
 2600 
 2601   Change the field types:
 2602   enum PixelFormat format   -> int format   in AVFilterBuffer
 2603   enum PixelFormat *formats -> int *formats in AVFilterFormats
 2604   enum PixelFormat *format  -> int format   in AVFilterLink
 2605 
 2606   Change the function signatures:
 2607   AVFilterFormats *avfilter_make_format_list(const enum PixelFormat *pix_fmts); ->
 2608   AVFilterFormats *avfilter_make_format_list(const int *fmts);
 2609 
 2610   int avfilter_add_colorspace(AVFilterFormats **avff, enum PixelFormat pix_fmt); ->
 2611   int avfilter_add_format    (AVFilterFormats **avff, int fmt);
 2612 
 2613   AVFilterFormats *avfilter_all_colorspaces(void); ->
 2614   AVFilterFormats *avfilter_all_formats    (enum AVMediaType type);
 2615 
 2616   This change breaks libavfilter API/ABI.
 2617 
 2618 2010-07-21 - aac6ca6 - lavcore 0.0.0
 2619   Add libavcore.
 2620 
 2621 2010-07-17 - b5c582f - lavfi 1.25.0 - AVFilterBuffer
 2622   Remove w and h fields from AVFilterBuffer.
 2623 
 2624 2010-07-17 - f0d77b2 - lavfi 1.24.0 - AVFilterBuffer
 2625   Rename AVFilterPic to AVFilterBuffer.
 2626 
 2627 2010-07-17 - 57fe80f - lavf 52.74.0 - url_fskip()
 2628   Make url_fskip() return an int error code instead of void.
 2629 
 2630 2010-07-11 - 23940f1 - lavc 52.83.0
 2631   Add AVCodecContext.lpc_type and AVCodecContext.lpc_passes fields.
 2632   Add AVLPCType enum.
 2633   Deprecate AVCodecContext.use_lpc.
 2634 
 2635 2010-07-11 - e1d7c88 - lavc 52.82.0 - avsubtitle_free()
 2636   Add a function for free the contents of a AVSubtitle generated by
 2637   avcodec_decode_subtitle.
 2638 
 2639 2010-07-11 - b91d08f - lavu 50.22.0 - bswap.h and intreadwrite.h
 2640   Make the bswap.h and intreadwrite.h API public.
 2641 
 2642 2010-07-08 - ce1cd1c - lavu 50.21.0 - pixdesc.h
 2643   Rename read/write_line() to av_read/write_image_line().
 2644 
 2645 2010-07-07 - 4d508e4 - lavfi 1.21.0 - avfilter_copy_picref_props()
 2646   Add avfilter_copy_picref_props().
 2647 
 2648 2010-07-03 - 2d525ef - lavc 52.79.0
 2649   Add FF_COMPLIANCE_UNOFFICIAL and change all instances of
 2650   FF_COMPLIANCE_INOFFICIAL to use FF_COMPLIANCE_UNOFFICIAL.
 2651 
 2652 2010-07-02 - 89eec74 - lavu 50.20.0 - lfg.h
 2653   Export av_lfg_init(), av_lfg_get(), av_mlfg_get(), and av_bmg_get() through
 2654   lfg.h.
 2655 
 2656 2010-06-28 - a52e2c3 - lavfi 1.20.1 - av_parse_color()
 2657   Extend av_parse_color() syntax, make it accept an alpha value specifier and
 2658   set the alpha value to 255 by default.
 2659 
 2660 2010-06-22 - 735cf6b - lavf 52.71.0 - URLProtocol.priv_data_size, priv_data_class
 2661   Add priv_data_size and priv_data_class to URLProtocol.
 2662 
 2663 2010-06-22 - ffbb289 - lavf 52.70.0 - url_alloc(), url_connect()
 2664   Add url_alloc() and url_connect().
 2665 
 2666 2010-06-22 - 9b07a2d - lavf 52.69.0 - av_register_protocol2()
 2667   Add av_register_protocol2(), deprecating av_register_protocol().
 2668 
 2669 2010-06-09 - 65db058 - lavu 50.19.0 - av_compare_mod()
 2670   Add av_compare_mod() to libavutil/mathematics.h.
 2671 
 2672 2010-06-05 - 0b99215 - lavu 50.18.0 - eval API
 2673   Make the eval API public.
 2674 
 2675 2010-06-04 - 31878fc - lavu 50.17.0 - AV_BASE64_SIZE
 2676   Add AV_BASE64_SIZE() macro.
 2677 
 2678 2010-06-02 - 7e566bb - lavc 52.73.0 - av_get_codec_tag_string()
 2679   Add av_get_codec_tag_string().
 2680 
 2681 
 2682 -------- 8< --------- FFmpeg 0.6 was cut here -------- 8< ---------
 2683 
 2684 2010-06-01 - 2b99142 - lsws 0.11.0 - convertPalette API
 2685   Add sws_convertPalette8ToPacked32() and sws_convertPalette8ToPacked24().
 2686 
 2687 2010-05-26 - 93ebfee - lavc 52.72.0 - CODEC_CAP_EXPERIMENTAL
 2688   Add CODEC_CAP_EXPERIMENTAL flag.
 2689   NOTE: this was backported to 0.6
 2690 
 2691 2010-05-23 - 9977863 - lavu 50.16.0 - av_get_random_seed()
 2692   Add av_get_random_seed().
 2693 
 2694 2010-05-18 - 796ac23 - lavf 52.63.0 - AVFMT_FLAG_RTP_HINT
 2695   Add AVFMT_FLAG_RTP_HINT as possible value for AVFormatContext.flags.
 2696   NOTE: this was backported to 0.6
 2697 
 2698 2010-05-09 - b6bc205 - lavfi 1.20.0 - AVFilterPicRef
 2699   Add interlaced and top_field_first fields to AVFilterPicRef.
 2700 
 2701 2010-05-01 - 8e2ee18 - lavf 52.62.0 - probe function
 2702   Add av_probe_input_format2 to API, it allows ignoring probe
 2703   results below given score and returns the actual probe score.
 2704 
 2705 2010-04-01 - 3dd6180 - lavf 52.61.0 - metadata API
 2706   Add a flag for av_metadata_set2() to disable overwriting of
 2707   existing tags.
 2708 
 2709 2010-04-01 - 0fb49b5 - lavc 52.66.0
 2710   Add avcodec_get_edge_width().
 2711 
 2712 2010-03-31 - d103218 - lavc 52.65.0
 2713   Add avcodec_copy_context().
 2714 
 2715 2010-03-31 - 1a70d12 - lavf 52.60.0 - av_match_ext()
 2716   Make av_match_ext() public.
 2717 
 2718 2010-03-31 - 1149150 - lavu 50.14.0 - AVMediaType
 2719   Move AVMediaType enum from libavcodec to libavutil.
 2720 
 2721 2010-03-31 - 72415b2 - lavc 52.64.0 - AVMediaType
 2722   Define AVMediaType enum, and use it instead of enum CodecType, which
 2723   is deprecated and will be dropped at the next major bump.
 2724 
 2725 2010-03-25 - 8795823 - lavu 50.13.0 - av_strerror()
 2726   Implement av_strerror().
 2727 
 2728 2010-03-23 - e1484eb - lavc 52.60.0 - av_dct_init()
 2729   Support DCT-I and DST-I.
 2730 
 2731 2010-03-15 - b8819c8 - lavf 52.56.0 - AVFormatContext.start_time_realtime
 2732   Add AVFormatContext.start_time_realtime field.
 2733 
 2734 2010-03-13 - 5bb5c1d - lavfi 1.18.0 - AVFilterPicRef.pos
 2735   Add AVFilterPicRef.pos field.
 2736 
 2737 2010-03-13 - 60c144f - lavu 50.12.0 - error.h
 2738   Move error code definitions from libavcodec/avcodec.h to
 2739   the new public header libavutil/error.h.
 2740 
 2741 2010-03-07 - c709483 - lavc 52.56.0 - avfft.h
 2742   Add public FFT interface.
 2743 
 2744 2010-03-06 - ac6ef86 - lavu 50.11.0 - av_stristr()
 2745   Add av_stristr().
 2746 
 2747 2010-03-03 - 4b83fc0 - lavu 50.10.0 - av_tree_enumerate()
 2748   Add av_tree_enumerate().
 2749 
 2750 2010-02-07 - b687c1a - lavu 50.9.0 - av_compare_ts()
 2751   Add av_compare_ts().
 2752 
 2753 2010-02-05 - 3f3dc76 - lsws 0.10.0 - sws_getCoefficients()
 2754   Add sws_getCoefficients().
 2755 
 2756 2010-02-01 - ca76a11 - lavf 52.50.0 - metadata API
 2757   Add a list of generic tag names, change 'author' -> 'artist',
 2758   'year' -> 'date'.
 2759 
 2760 2010-01-30 - 80a07f6 - lavu 50.8.0 - av_get_pix_fmt()
 2761   Add av_get_pix_fmt().
 2762 
 2763 2010-01-21 - 01cc47d - lsws 0.9.0 - sws_scale()
 2764   Change constness attributes of sws_scale() parameters.
 2765 
 2766 2010-01-10 - 3fb8e77 - lavfi 1.15.0 - avfilter_graph_config_links()
 2767   Add a log_ctx parameter to avfilter_graph_config_links().
 2768 
 2769 2010-01-07 - 8e9767f - lsws 0.8.0 - sws_isSupported{In,Out}put()
 2770   Add sws_isSupportedInput() and sws_isSupportedOutput() functions.
 2771 
 2772 2010-01-06 - c1d662f - lavfi 1.14.0 - avfilter_add_colorspace()
 2773   Change the avfilter_add_colorspace() signature, make it accept an
 2774   (AVFilterFormats **) rather than an (AVFilterFormats *) as before.
 2775 
 2776 2010-01-03 - 4fd1f18 - lavfi 1.13.0 - avfilter_add_colorspace()
 2777   Add avfilter_add_colorspace().
 2778 
 2779 2010-01-02 - 8eb631f - lavf 52.46.0 - av_match_ext()
 2780   Add av_match_ext(), it should be used in place of match_ext().
 2781 
 2782 2010-01-01 - a1f547b - lavf 52.45.0 - av_guess_format()
 2783   Add av_guess_format(), it should be used in place of guess_format().
 2784 
 2785 2009-12-13 - a181981 - lavf 52.43.0 - metadata API
 2786   Add av_metadata_set2(), AV_METADATA_DONT_STRDUP_KEY and
 2787   AV_METADATA_DONT_STRDUP_VAL.
 2788 
 2789 2009-12-13 - 277c733 - lavu 50.7.0 - avstring.h API
 2790   Add av_d2str().
 2791 
 2792 2009-12-13 - 02b398e - lavc 52.42.0 - AVStream
 2793   Add avg_frame_rate.
 2794 
 2795 2009-12-12 - 3ba69a1 - lavu 50.6.0 - av_bmg_next()
 2796   Introduce the av_bmg_next() function.
 2797 
 2798 2009-12-05 - a13a543 - lavfi 1.12.0 - avfilter_draw_slice()
 2799   Add a slice_dir parameter to avfilter_draw_slice().
 2800 
 2801 2009-11-26 - 4cc3f6a - lavfi 1.11.0 - AVFilter
 2802   Remove the next field from AVFilter, this is not anymore required.
 2803 
 2804 2009-11-25 - 1433c4a - lavfi 1.10.0 - avfilter_next()
 2805   Introduce the avfilter_next() function.
 2806 
 2807 2009-11-25 - 86a60fa - lavfi 1.9.0 - avfilter_register()
 2808   Change the signature of avfilter_register() to make it return an
 2809   int. This is required since now the registration operation may fail.
 2810 
 2811 2009-11-25 - 74a0059 - lavu 50.5.0 - pixdesc.h API
 2812   Make the pixdesc.h API public.
 2813 
 2814 2009-10-27 - 243110f - lavfi 1.5.0 - AVFilter.next
 2815   Add a next field to AVFilter, this is used for simplifying the
 2816   registration and management of the registered filters.
 2817 
 2818 2009-10-23 - cccd292 - lavfi 1.4.1 - AVFilter.description
 2819   Add a description field to AVFilter.
 2820 
 2821 2009-10-19 - 6b5dc05 - lavfi 1.3.0 - avfilter_make_format_list()
 2822   Change the interface of avfilter_make_format_list() from
 2823   avfilter_make_format_list(int n, ...) to
 2824   avfilter_make_format_list(enum PixelFormat *pix_fmts).
 2825 
 2826 2009-10-18 - 0eb4ff9 - lavfi 1.0.0 - avfilter_get_video_buffer()
 2827   Make avfilter_get_video_buffer() recursive and add the w and h
 2828   parameters to it.
 2829 
 2830 2009-10-07 - 46c40e4 - lavfi 0.5.1 - AVFilterPic
 2831   Add w and h fields to AVFilterPic.
 2832 
 2833 2009-06-22 - 92400be - lavf 52.34.1 - AVFormatContext.packet_size
 2834   This is now an unsigned int instead of a signed int.
 2835 
 2836 2009-06-19 - a4276ba - lavc 52.32.0 - AVSubtitle.pts
 2837   Add a pts field to AVSubtitle which gives the subtitle packet pts
 2838   in AV_TIME_BASE. Some subtitle de-/encoders (e.g. XSUB) will
 2839   not work right without this.
 2840 
 2841 2009-06-03 - 8f3f2e0 - lavc 52.30.2 - AV_PKT_FLAG_KEY
 2842   PKT_FLAG_KEY has been deprecated and will be dropped at the next
 2843   major version. Use AV_PKT_FLAG_KEY instead.
 2844 
 2845 2009-06-01 - f988ce6 - lavc 52.30.0 - av_lockmgr_register()
 2846   av_lockmgr_register() can be used to register a callback function
 2847   that lavc (and in the future, libraries that depend on lavc) can use
 2848   to implement mutexes. The application should provide a callback function
 2849   that implements the AV_LOCK_* operations described in avcodec.h.
 2850   When the lock manager is registered, FFmpeg is guaranteed to behave
 2851   correctly in a multi-threaded application.
 2852 
 2853 2009-04-30 - ce1d9c8 - lavc 52.28.0 - av_free_packet()
 2854   av_free_packet() is no longer an inline function. It is now exported.
 2855 
 2856 2009-04-11 - 80d403f - lavc 52.25.0 - deprecate av_destruct_packet_nofree()
 2857   Please use NULL instead. This has been supported since r16506
 2858   (lavf > 52.23.1, lavc > 52.10.0).
 2859 
 2860 2009-04-07 - 7a00bba - lavc 52.23.0 - avcodec_decode_video/audio/subtitle
 2861   The old decoding functions are deprecated, all new code should use the
 2862   new functions avcodec_decode_video2(), avcodec_decode_audio3() and
 2863   avcodec_decode_subtitle2(). These new functions take an AVPacket *pkt
 2864   argument instead of a const uint8_t *buf / int buf_size pair.
 2865 
 2866 2009-04-03 - 7b09db3 - lavu 50.3.0 - av_fifo_space()
 2867   Introduce the av_fifo_space() function.
 2868 
 2869 2009-04-02 - fabd246 - lavc 52.23.0 - AVPacket
 2870   Move AVPacket declaration from libavformat/avformat.h to
 2871   libavcodec/avcodec.h.
 2872 
 2873 2009-03-22 - 6e08ca9 - lavu 50.2.0 - RGB32 pixel formats
 2874   Convert the pixel formats PIX_FMT_ARGB, PIX_FMT_RGBA, PIX_FMT_ABGR,
 2875   PIX_FMT_BGRA, which were defined as macros, into enum PixelFormat values.
 2876   Conversely PIX_FMT_RGB32, PIX_FMT_RGB32_1, PIX_FMT_BGR32 and
 2877   PIX_FMT_BGR32_1 are now macros.
 2878   avcodec_get_pix_fmt() now recognizes the "rgb32" and "bgr32" aliases.
 2879   Re-sort the enum PixelFormat list accordingly.
 2880   This change breaks API/ABI backward compatibility.
 2881 
 2882 2009-03-22 - f82674e - lavu 50.1.0 - PIX_FMT_RGB5X5 endian variants
 2883   Add the enum PixelFormat values:
 2884   PIX_FMT_RGB565BE, PIX_FMT_RGB565LE, PIX_FMT_RGB555BE, PIX_FMT_RGB555LE,
 2885   PIX_FMT_BGR565BE, PIX_FMT_BGR565LE, PIX_FMT_BGR555BE, PIX_FMT_BGR555LE.
 2886 
 2887 2009-03-21 - ee6624e - lavu 50.0.0  - av_random*
 2888   The Mersenne Twister PRNG implemented through the av_random* functions
 2889   was removed. Use the lagged Fibonacci PRNG through the av_lfg* functions
 2890   instead.
 2891 
 2892 2009-03-08 - 41dd680 - lavu 50.0.0  - AVFifoBuffer
 2893   av_fifo_init, av_fifo_read, av_fifo_write and av_fifo_realloc were dropped
 2894   and replaced by av_fifo_alloc, av_fifo_generic_read, av_fifo_generic_write
 2895   and av_fifo_realloc2.
 2896   In addition, the order of the function arguments of av_fifo_generic_read
 2897   was changed to match av_fifo_generic_write.
 2898   The AVFifoBuffer/struct AVFifoBuffer may only be used in an opaque way by
 2899   applications, they may not use sizeof() or directly access members.
 2900 
 2901 2009-03-01 - ec26457 - lavf 52.31.0 - Generic metadata API
 2902   Introduce a new metadata API (see av_metadata_get() and friends).
 2903   The old API is now deprecated and should not be used anymore. This especially
 2904   includes the following structure fields:
 2905     - AVFormatContext.title
 2906     - AVFormatContext.author
 2907     - AVFormatContext.copyright
 2908     - AVFormatContext.comment
 2909     - AVFormatContext.album
 2910     - AVFormatContext.year
 2911     - AVFormatContext.track
 2912     - AVFormatContext.genre
 2913     - AVStream.language
 2914     - AVStream.filename
 2915     - AVProgram.provider_name
 2916     - AVProgram.name
 2917     - AVChapter.title