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    1 /////////////////////////////////////////////////////////////////
    2 /// getID3() by James Heinrich <info@getid3.org>               //
    3 //  available at http://getid3.sourceforge.net                 //
    4 //            or https://www.getid3.org                        //
    5 //          also https://github.com/JamesHeinrich/getID3       //
    6 /////////////////////////////////////////////////////////////////
    7 
    8 *****************************************************************
    9 *****************************************************************
   10 
   11    getID3() is released under multiple licenses. You may choose
   12    from the following licenses, and use getID3 according to the
   13    terms of the license most suitable to your project.
   14 
   15 GNU GPL: https://gnu.org/licenses/gpl.html                   (v3)
   16          https://gnu.org/licenses/old-licenses/gpl-2.0.html  (v2)
   17          https://gnu.org/licenses/old-licenses/gpl-1.0.html  (v1)
   18 
   19 GNU LGPL: https://gnu.org/licenses/lgpl.html                 (v3)
   20 
   21 Mozilla MPL: https://www.mozilla.org/MPL/2.0/                (v2)
   22 
   23 getID3 Commercial License: https://www.getid3.org/#gCL (payment required)
   24 
   25 *****************************************************************
   26 *****************************************************************
   27 Copies of each of the above licenses are included in the 'licenses'
   28 directory of the getID3 distribution.
   29 
   30 
   31        +----------------------------------------------+
   32        | If you want to donate, there is a link on    |
   33        | https://www.getid3.org for PayPal donations. |
   34        +----------------------------------------------+
   35 
   36 
   37 Quick Start
   38 ===========================================================================
   39 
   40 Q: How can I check that getID3() works on my server/files?
   41 A: Unzip getID3() to a directory, then access /demos/demo.browse.php
   42 
   43 
   44 
   45 Support
   46 ===========================================================================
   47 
   48 Q: I have a question, or I found a bug. What do I do?
   49 A: The preferred method of support requests and/or bug reports is the
   50    forum at http://support.getid3.org/
   51 
   52 
   53 
   54 Sourceforge Notification
   55 ===========================================================================
   56 
   57 It's highly recommended that you sign up for notification from
   58 Sourceforge for when new versions are released. Please visit:
   59 http://sourceforge.net/project/showfiles.php?group_id=55859
   60 and click the little "monitor package" icon/link.  If you're
   61 previously signed up for the mailing list, be aware that it has
   62 been discontinued, only the automated Sourceforge notification
   63 will be used from now on.
   64 
   65 
   66 
   67 What does getID3() do?
   68 ===========================================================================
   69 
   70 Reads & parses (to varying degrees):
   71  ¤ tags:
   72   * APE (v1 and v2)
   73   * ID3v1 (& ID3v1.1)
   74   * ID3v2 (v2.4, v2.3, v2.2)
   75   * Lyrics3 (v1 & v2)
   76 
   77  ¤ audio-lossy:
   78   * MP3/MP2/MP1
   79   * MPC / Musepack
   80   * Ogg (Vorbis, OggFLAC, Speex, Opus)
   81   * AAC / MP4
   82   * AC3
   83   * DTS
   84   * RealAudio
   85   * Speex
   86   * DSS
   87   * VQF
   88 
   89  ¤ audio-lossless:
   90   * AIFF
   91   * AU
   92   * Bonk
   93   * CD-audio (*.cda)
   94   * FLAC
   95   * LA (Lossless Audio)
   96   * LiteWave
   97   * LPAC
   98   * MIDI
   99   * Monkey's Audio
  100   * OptimFROG
  101   * RKAU
  102   * Shorten
  103   * TTA
  104   * VOC
  105   * WAV (RIFF)
  106   * WavPack
  107 
  108  ¤ audio-video:
  109   * ASF: ASF, Windows Media Audio (WMA), Windows Media Video (WMV)
  110   * AVI (RIFF)
  111   * Flash
  112   * Matroska (MKV)
  113   * MPEG-1 / MPEG-2
  114   * NSV (Nullsoft Streaming Video)
  115   * Quicktime (including MP4)
  116   * RealVideo
  117 
  118  ¤ still image:
  119   * BMP
  120   * GIF
  121   * JPEG
  122   * PNG
  123   * TIFF
  124   * SWF (Flash)
  125   * PhotoCD
  126 
  127  ¤ data:
  128   * ISO-9660 CD-ROM image (directory structure)
  129   * SZIP (limited support)
  130   * ZIP (directory structure)
  131   * TAR
  132   * CUE
  133 
  134 
  135 Writes:
  136   * ID3v1 (& ID3v1.1)
  137   * ID3v2 (v2.3 & v2.4)
  138   * VorbisComment on OggVorbis
  139   * VorbisComment on FLAC (not OggFLAC)
  140   * APE v2
  141   * Lyrics3 (delete only)
  142 
  143 
  144 
  145 Requirements
  146 ===========================================================================
  147 
  148 * PHP 4.2.0 up to 5.2.x for getID3() 1.7.x  (and earlier)
  149 * PHP 5.0.5 (or higher) for getID3() 1.8.x  (and up)
  150 * PHP 5.3.0 (or higher) for getID3() 1.9.17 (and up)
  151 * PHP 5.3.0 (or higher) for getID3() 2.0.x  (and up)
  152 * at least 4MB memory for PHP. 8MB or more is highly recommended.
  153   12MB is required with all modules loaded.
  154 
  155 
  156 
  157 Usage
  158 ===========================================================================
  159 
  160 See /demos/demo.basic.php for a very basic use of getID3() with no
  161 fancy output, just scanning one file.
  162 
  163 See structure.txt for the returned data structure.
  164 
  165 *>  For an example of a complete directory-browsing,       <*
  166 *>  file-scanning implementation of getID3(), please run   <*
  167 *>  /demos/demo.browse.php                                 <*
  168 
  169 See /demos/demo.mysql.php for a sample recursive scanning code that
  170 scans every file in a given directory, and all sub-directories, stores
  171 the results in a database and allows various analysis / maintenance
  172 operations
  173 
  174 To analyze remote files over HTTP or FTP you need to copy the file
  175 locally first before running getID3(). Your code would look something
  176 like this:
  177 
  178 // Copy remote file locally to scan with getID3()
  179 $remotefilename = 'http://www.example.com/filename.mp3';
  180 if ($fp_remote = fopen($remotefilename, 'rb')) {
  181 	$localtempfilename = tempnam('/tmp', 'getID3');
  182 	if ($fp_local = fopen($localtempfilename, 'wb')) {
  183 		while ($buffer = fread($fp_remote, 32768)) {
  184 			fwrite($fp_local, $buffer);
  185 		}
  186 		fclose($fp_local);
  187 
  188 		$remote_headers = array_change_key_case(get_headers($remotefilename, 1), CASE_LOWER);
  189 		$remote_filesize = (isset($remote_headers['content-length']) ? (is_array($remote_headers['content-length']) ? $remote_headers['content-length'][count($remote_headers['content-length']) - 1] : $remote_headers['content-length']) : null);
  190 
  191 		// Initialize getID3 engine
  192 		$getID3 = new getID3;
  193 
  194 		$ThisFileInfo = $getID3->analyze($localtempfilename, $remote_filesize, basename($remotefilename));
  195 
  196 		// Delete temporary file
  197 		unlink($localtempfilename);
  198 	}
  199 	fclose($fp_remote);
  200 }
  201 
  202 Note: since v1.9.9-20150212 it is possible a second and third parameter
  203 to $getID3->analyze(), for original filesize and original filename
  204 respectively. This permits you to download only a portion of a large remote
  205 file but get accurate playtime estimates, assuming the format only requires
  206 the beginning of the file for correct format analysis.
  207 
  208 See /demos/demo.write.php for how to write tags.
  209 
  210 
  211 
  212 What does the returned data structure look like?
  213 ===========================================================================
  214 
  215 See structure.txt
  216 
  217 It is recommended that you look at the output of
  218 /demos/demo.browse.php scanning the file(s) you're interested in to
  219 confirm what data is actually returned for any particular filetype in
  220 general, and your files in particular, as the actual data returned
  221 may vary considerably depending on what information is available in
  222 the file itself.
  223 
  224 
  225 
  226 Notes
  227 ===========================================================================
  228 
  229 getID3() 1.x:
  230 If the format parser encounters a critical problem, it will return
  231 something in $fileinfo['error'], describing the encountered error. If
  232 a less critical error or notice is generated it will appear in
  233 $fileinfo['warning']. Both keys may contain more than one warning or
  234 error. If something is returned in ['error'] then the file was not
  235 correctly parsed and returned data may or may not be correct and/or
  236 complete. If something is returned in ['warning'] (and not ['error'])
  237 then the data that is returned is OK - usually getID3() is reporting
  238 errors in the file that have been worked around due to known bugs in
  239 other programs. Some warnings may indicate that the data that is
  240 returned is OK but that some data could not be extracted due to
  241 errors in the file.
  242 
  243 getID3() 2.x:
  244 See above except errors are thrown (so you will only get one error).
  245 
  246 
  247 
  248 Disclaimer
  249 ===========================================================================
  250 
  251 getID3() has been tested on many systems, on many types of files,
  252 under many operating systems, and is generally believe to be stable
  253 and safe. That being said, there is still the chance there is an
  254 undiscovered and/or unfixed bug that may potentially corrupt your
  255 file, especially within the writing functions. By using getID3() you
  256 agree that it's not my fault if any of your files are corrupted.
  257 In fact, I'm not liable for anything :)
  258 
  259 
  260 
  261 License
  262 ===========================================================================
  263 
  264 GNU General Public License - see license.txt
  265 
  266 This program is free software; you can redistribute it and/or
  267 modify it under the terms of the GNU General Public License
  268 as published by the Free Software Foundation; either version 2
  269 of the License, or (at your option) any later version.
  270 
  271 This program is distributed in the hope that it will be useful,
  272 but WITHOUT ANY WARRANTY; without even the implied warranty of
  273 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  274 GNU General Public License for more details.
  275 
  276 You should have received a copy of the GNU General Public License
  277 along with this program; if not, write to:
  278 Free Software Foundation, Inc.
  279 59 Temple Place - Suite 330
  280 Boston, MA  02111-1307, USA.
  281 
  282 FAQ:
  283 Q: Can I use getID3() in my program? Do I need a commercial license?
  284 A: You're generally free to use getID3 however you see fit. The only
  285    case in which you would require a commercial license is if you're
  286    selling your closed-source program that integrates getID3. If you
  287    sell your program including a copy of getID3, that's fine as long
  288    as you include a copy of the sourcecode when you sell it.  Or you
  289    can distribute your code without getID3 and say "download it from
  290    getid3.sourceforge.net"
  291 
  292 
  293 
  294 Why is it called "getID3()" if it does so much more than just that?
  295 ===========================================================================
  296 
  297 v0.1 did in fact just do that. I don't have a copy of code that old, but I
  298 could essentially write it today with a one-line function:
  299   function getID3($filename) { return unpack('a3TAG/a30title/a30artist/a30album/a4year/a28comment/c1track/c1genreid', substr(file_get_contents($filename), -128)); }
  300 
  301 
  302 Future Plans
  303 ===========================================================================
  304 https://www.getid3.org/phpBB3/viewforum.php?f=7
  305 
  306 * Better support for MP4 container format
  307 * Scan for appended ID3v2 tag at end of file per ID3v2.4 specs (Section 5.0)
  308 * Support for JPEG-2000 (http://www.morgan-multimedia.com/jpeg2000_overview.htm)
  309 * Support for MOD (mod/stm/s3m/it/xm/mtm/ult/669)
  310 * Support for ACE (thanks Vince)
  311 * Support for Ogg other than Vorbis, Speex and OggFlac (ie. Ogg+Xvid)
  312 * Ability to create Xing/LAME VBR header for VBR MP3s that are missing VBR header
  313 * Ability to "clean" ID3v2 padding (replace invalid padding with valid padding)
  314 * Warn if MP3s change version mid-stream (in full-scan mode)
  315 * check for corrupt/broken mid-file MP3 streams in histogram scan
  316 * Support for lossless-compression formats
  317   (http://www.firstpr.com.au/audiocomp/lossless/#Links)
  318   (http://compression.ca/act-sound.html)
  319   (http://web.inter.nl.net/users/hvdh/lossless/lossless.htm)
  320 * Support for RIFF-INFO chunks
  321   * http://lotto.st-andrews.ac.uk/~njh/tag_interchange.html
  322     (thanks Nick Humfrey <njhØsurgeradio*co*uk>)
  323   * http://abcavi.narod.ru/sof/abcavi/infotags.htm
  324     (thanks Kibi)
  325 * Better support for Bink video
  326 * http://www.hr/josip/DSP/AudioFile2.html
  327 * http://www.pcisys.net/~melanson/codecs/
  328 * Detect mp3PRO
  329 * Support for PSD
  330 * Support for JPC
  331 * Support for JP2
  332 * Support for JPX
  333 * Support for JB2
  334 * Support for IFF
  335 * Support for ICO
  336 * Support for ANI
  337 * Support for EXE (comments, author, etc) (thanks p*quaedackersØplanet*nl)
  338 * Support for DVD-IFO (region, subtitles, aspect ratio, etc)
  339   (thanks p*quaedackersØplanet*nl)
  340 * More complete support for SWF - parsing encapsulated MP3 and/or JPEG content
  341     (thanks n8n8Øyahoo*com)
  342 * Support for a2b
  343 * Optional scan-through-frames for AVI verification
  344   (thanks rockcohenØmassive-interactive*nl)
  345 * Support for TTF (thanks infoØbutterflyx*com)
  346 * Support for DSS (https://www.getid3.org/phpBB3/viewtopic.php?t=171)
  347 * Support for SMAF (http://smaf-yamaha.com/what/demo.html)
  348   https://www.getid3.org/phpBB3/viewtopic.php?t=182
  349 * Support for AMR (https://www.getid3.org/phpBB3/viewtopic.php?t=195)
  350 * Support for 3gpp (https://www.getid3.org/phpBB3/viewtopic.php?t=195)
  351 * Support for ID4 (http://www.wackysoft.cjb.net grizlyY2KØhotmail*com)
  352 * Parse XML data returned in Ogg comments
  353 * Parse XML data from Quicktime SMIL metafiles (klausrathØmac*com)
  354 * ID3v2 genre string creator function
  355 * More complete parsing of JPG
  356 * Support for all old-style ASF packets
  357 * ASF/WMA/WMV tag writing
  358 * Parse declared T??? ID3v2 text information frames, where appropriate
  359     (thanks Christian Fritz for the idea)
  360 * Recognize encoder:
  361   http://www.guerillasoft.com/EncSpot2/index.html
  362   http://ff123.net/identify.html
  363   http://www.hydrogenaudio.org/?act=ST&f=16&t=9414
  364   http://www.hydrogenaudio.org/?showtopic=11785
  365 * Support for other OS/2 bitmap structures: Bitmap Array('BA'),
  366   Color Icon('CI'), Color Pointer('CP'), Icon('IC'), Pointer ('PT')
  367   http://netghost.narod.ru/gff/graphics/summary/os2bmp.htm
  368 * Support for WavPack RAW mode
  369 * ASF/WMA/WMV data packet parsing
  370 * ID3v2FrameFlagsLookupTagAlter()
  371 * ID3v2FrameFlagsLookupFileAlter()
  372 * obey ID3v2 tag alter/preserve/discard rules
  373 * http://www.geocities.com/SiliconValley/Sector/9654/Softdoc/Illyrium/Aolyr.htm
  374 * proper checking for LINK/LNK frame validity in ID3v2 writing
  375 * proper checking for ASPI-TLEN frame validity in ID3v2 writing
  376 * proper checking for COMR frame validity in ID3v2 writing
  377 * http://www.geocities.co.jp/SiliconValley-Oakland/3664/index.html
  378 * decode GEOB ID3v2 structure as encoded by RealJukebox,
  379   decode NCON ID3v2 structure as encoded by MusicMatch
  380   (probably won't happen - the formats are proprietary)
  381 
  382 
  383 
  384 Known Bugs/Issues in getID3() that may be fixed eventually
  385 ===========================================================================
  386 https://www.getid3.org/phpBB3/viewtopic.php?t=25
  387 
  388 * Cannot determine bitrate for MPEG video with VBR video data
  389   (need documentation)
  390 * Interlace/progressive cannot be determined for MPEG video
  391   (need documentation)
  392 * MIDI playtime is sometimes inaccurate
  393 * AAC-RAW mode files cannot be identified
  394 * WavPack-RAW mode files cannot be identified
  395 * mp4 files report lots of "Unknown QuickTime atom type"
  396    (need documentation)
  397 * Encrypted ASF/WMA/WMV files warn about "unhandled GUID
  398   ASF_Content_Encryption_Object"
  399 * Bitrate split between audio and video cannot be calculated for
  400   NSV, only the total bitrate. (need documentation)
  401 * All Ogg formats (Vorbis, OggFLAC, Speex) are affected by the
  402   problem of large VorbisComments spanning multiple Ogg pages, but
  403   but only OggVorbis files can be processed with vorbiscomment.
  404 * The version of "head" supplied with Mac OS 10.2.8 (maybe other
  405   versions too) does only understands a single option (-n) and
  406   therefore fails. getID3 ignores this and returns wrong md5_data.
  407 
  408 
  409 
  410 Known Bugs/Issues in getID3() that cannot be fixed
  411 --------------------------------------------------
  412 https://www.getid3.org/phpBB3/viewtopic.php?t=25
  413 
  414 * 32-bit PHP installations only:
  415   Files larger than 2GB cannot always be parsed fully by getID3()
  416   due to limitations in the 32-bit PHP filesystem functions.
  417   NOTE: Since v1.7.8b3 there is partial support for larger-than-
  418   2GB files, most of which will parse OK, as long as no critical
  419   data is located beyond the 2GB offset.
  420   Known will-work:
  421   * all file formats on 64-bit PHP
  422   * ZIP  (format doesn't support files >2GB)
  423   * FLAC (current encoders don't support files >2GB)
  424   Known will-not-work:
  425   * ID3v1 tags (always located at end-of-file)
  426   * Lyrics3 tags (always located at end-of-file)
  427   * APE tags (always located at end-of-file)
  428   Maybe-will-work:
  429   * Quicktime (will work if needed metadata is before 2GB offset,
  430     that is if the file has been hinted/optimized for streaming)
  431   * RIFF.WAV (should work fine, but gives warnings about not being
  432     able to parse all chunks)
  433   * RIFF.AVI (playtime will probably be wrong, is only based on
  434     "movi" chunk that fits in the first 2GB, should issue error
  435     to show that playtime is incorrect. Other data should be mostly
  436     correct, assuming that data is constant throughout the file)
  437 * PHP <= v5 on Windows cannot read UTF-8 filenames
  438 
  439 
  440 Known Bugs/Issues in other programs
  441 -----------------------------------
  442 https://www.getid3.org/phpBB3/viewtopic.php?t=25
  443 
  444 * MusicBrainz Picard (at least up to v1.3.2) writes multiple
  445   ID3v2.3 genres in non-standard forward-slash separated text
  446   rather than parenthesis-numeric+refinement style per the ID3v2.3
  447   specs. Tags written in ID3v2.4 mode are written correctly.
  448   (detected and worked around by getID3())
  449 * PZ TagEditor v4.53.408 has been known to insert ID3v2.3 frames
  450   into an existing ID3v2.2 tag which, of course, breaks things
  451 * Windows Media Player (up to v11) and iTunes (up to v10+) do
  452     not correctly handle ID3v2.3 tags with UTF-16BE+BOM
  453     encoding (they assume the data is UTF-16LE+BOM and either
  454     crash (WMP) or output Asian character set (iTunes)
  455 * Winamp (up to v2.80 at least) does not support ID3v2.4 tags,
  456     only ID3v2.3
  457     see: http://forums.winamp.com/showthread.php?postid=387524
  458 * Some versions of Helium2 (www.helium2.com) do not write
  459     ID3v2.4-compliant Frame Sizes, even though the tag is marked
  460     as ID3v2.4)  (detected by getID3())
  461 * MP3ext V3.3.17 places a non-compliant padding string at the end
  462     of the ID3v2 header. This is supposedly fixed in v3.4b21 but
  463     only if you manually add a registry key. This fix is not yet
  464     confirmed.  (detected by getID3())
  465 * CDex v1.40 (fixed by v1.50b7) writes non-compliant Ogg comment
  466     strings, supposed to be in the format "NAME=value" but actually
  467     written just "value"  (detected by getID3())
  468 * Oggenc 0.9-rc3 flags the encoded file as ABR whether it's
  469     actually ABR or VBR.
  470 * iTunes (versions "v7.0.0.70" is known-guilty, probably
  471     other versions are too) writes ID3v2.3 comment tags using an
  472     ID3v2.2 frame name (3-bytes) null-padded to 4 bytes which is
  473     not valid for ID3v2.3+
  474     (detected by getID3() since 1.9.12-201603221746)
  475 * iTunes (versions "X v2.0.3", "v3.0.1" are known-guilty, probably
  476     other versions are too) writes ID3v2.3 comment tags using a
  477     frame name 'COM ' which is not valid for ID3v2.3+ (it's an
  478     ID3v2.2-style frame name)  (detected by getID3())
  479 * MP2enc does not encode mono CBR MP2 files properly (half speed
  480     sound and double playtime)
  481 * MP2enc does not encode mono VBR MP2 files properly (actually
  482     encoded as stereo)
  483 * tooLAME does not encode mono VBR MP2 files properly (actually
  484     encoded as stereo)
  485 * AACenc encodes files in VBR mode (actually ABR) even if CBR is
  486    specified
  487 * AAC/ADIF - bitrate_mode = cbr for vbr files
  488 * LAME 3.90-3.92 prepends one frame of null data (space for the
  489   LAME/VBR header, but it never gets written) when encoding in CBR
  490   mode with the DLL
  491 * Ahead Nero encodes TwinVQF with a DSIZ value (which is supposed
  492   to be the filesize in bytes) of "0" for TwinVQF v1.0 and "1" for
  493   TwinVQF v2.0  (detected by getID3())
  494 * Ahead Nero encodes TwinVQF files 1 second shorter than they
  495   should be
  496 * AAC-ADTS files are always actually encoded VBR, even if CBR mode
  497   is specified (the CBR-mode switches on the encoder enable ABR
  498   mode, not CBR as such, but it's not possible to tell the
  499   difference between such ABR files and true VBR)
  500 * STREAMINFO.audio_signature in OggFLAC is always null. "The reason
  501   it's like that is because there is no seeking support in
  502   libOggFLAC yet, so it has no way to go back and write the
  503   computed sum after encoding. Seeking support in Ogg FLAC is the
  504   #1 item for the next release." - Josh Coalson (FLAC developer)
  505   NOTE: getID3() will calculate md5_data in a method similar to
  506   other file formats, but that value cannot be compared to the
  507   md5_data value from FLAC data in a FLAC file format.
  508 * STREAMINFO.audio_signature is not calculated in FLAC v0.3.0 &
  509   v0.4.0 - getID3() will calculate md5_data in a method similar to
  510   other file formats, but that value cannot be compared to the
  511   md5_data value from FLAC v0.5.0+
  512 * RioPort (various versions including 2.0 and 3.11) tags ID3v2 with
  513   a WCOM frame that has no data portion
  514 * Earlier versions of Coolplayer adds illegal ID3 tags to Ogg Vorbis
  515   files, thus making them corrupt.
  516 * Meracl ID3 Tag Writer v1.3.4 (and older) incorrectly truncates the
  517   last byte of data from an MP3 file when appending a new ID3v1 tag.
  518   (detected by getID3())
  519 * Lossless-Audio files encoded with and without the -noseek switch
  520   do actually differ internally and therefore cannot match md5_data
  521 * iTunes has been known to append a new ID3v1 tag on the end of an
  522   existing ID3v1 tag when ID3v2 tag is also present
  523   (detected by getID3())
  524 * MediaMonkey may write a blank RGAD ID3v2 frame but put actual
  525   replay gain adjustments in a series of user-defined TXXX frames
  526   (detected and handled by getID3() since v1.9.2)
  527 
  528 
  529 
  530 
  531 Reference material:
  532 ===========================================================================
  533 
  534 [www.id3.org material now mirrored at http://id3lib.sourceforge.net/id3/]
  535 * http://www.id3.org/id3v2.4.0-structure.txt
  536 * http://www.id3.org/id3v2.4.0-frames.txt
  537 * http://www.id3.org/id3v2.4.0-changes.txt
  538 * http://www.id3.org/id3v2.3.0.txt
  539 * http://www.id3.org/id3v2-00.txt
  540 * http://www.id3.org/mp3frame.html
  541 * http://minnie.tuhs.org/pipermail/mp3encoder/2001-January/001800.html <mathewhendry@hotmail.com>
  542 * http://www.dv.co.yu/mpgscript/mpeghdr.htm
  543 * http://www.mp3-tech.org/programmer/frame_header.html
  544 * http://users.belgacom.net/gc247244/extra/tag.html
  545 * http://gabriel.mp3-tech.org/mp3infotag.html
  546 * http://www.id3.org/iso4217.html
  547 * http://www.unicode.org/Public/MAPPINGS/ISO8859/8859-1.TXT
  548 * http://www.xiph.org/ogg/vorbis/doc/framing.html
  549 * http://www.xiph.org/ogg/vorbis/doc/v-comment.html
  550 * http://leknor.com/code/php/class.ogg.php.txt
  551 * http://www.id3.org/iso639-2.html
  552 * http://www.id3.org/lyrics3.html
  553 * http://www.id3.org/lyrics3200.html
  554 * http://www.psc.edu/general/software/packages/ieee/ieee.html
  555 * http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/ieee-expl.html
  556 * http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/binary.html
  557 * http://www.jmcgowan.com/avi.html
  558 * http://www.wotsit.org/
  559 * http://www.herdsoft.com/ti/davincie/davp3xo2.htm
  560 * http://www.mathdogs.com/vorbis-illuminated/bitstream-appendix.html
  561 * "Standard MIDI File Format" by Dustin Caldwell (from www.wotsit.org)
  562 * http://midistudio.com/Help/GMSpecs_Patches.htm
  563 * http://www.xiph.org/archives/vorbis/200109/0459.html
  564 * http://www.replaygain.org/
  565 * http://www.lossless-audio.com/
  566 * http://download.microsoft.com/download/winmediatech40/Doc/1.0/WIN98MeXP/EN-US/ASF_Specification_v.1.0.exe
  567 * http://mediaxw.sourceforge.net/files/doc/Active%20Streaming%20Format%20(ASF)%201.0%20Specification.pdf
  568 * http://www.uni-jena.de/~pfk/mpp/sv8/ (archived at http://www.hydrogenaudio.org/musepack/klemm/www.personal.uni-jena.de/~pfk/mpp/sv8/)
  569 * http://jfaul.de/atl/
  570 * http://www.uni-jena.de/~pfk/mpp/ (archived at http://www.hydrogenaudio.org/musepack/klemm/www.personal.uni-jena.de/~pfk/mpp/)
  571 * http://www.libpng.org/pub/png/spec/png-1.2-pdg.html
  572 * http://www.real.com/devzone/library/creating/rmsdk/doc/rmff.htm
  573 * http://www.fastgraph.com/help/bmp_os2_header_format.html
  574 * http://netghost.narod.ru/gff/graphics/summary/os2bmp.htm
  575 * http://flac.sourceforge.net/format.html
  576 * http://www.research.att.com/projects/mpegaudio/mpeg2.html
  577 * http://www.audiocoding.com/wiki/index.php?page=AAC
  578 * http://libmpeg.org/mpeg4/doc/w2203tfs.pdf
  579 * http://www.geocities.com/xhelmboyx/quicktime/formats/qtm-layout.txt
  580 * http://developer.apple.com/techpubs/quicktime/qtdevdocs/RM/frameset.htm
  581 * http://www.nullsoft.com/nsv/
  582 * http://www.wotsit.org/download.asp?f=iso9660
  583 * http://sandbox.mc.edu/~bennet/cs110/tc/tctod.html
  584 * http://www.cdroller.com/htm/readdata.html
  585 * http://www.speex.org/manual/node10.html
  586 * http://www.harmony-central.com/Computer/Programming/aiff-file-format.doc
  587 * http://www.faqs.org/rfcs/rfc2361.html
  588 * http://ghido.shelter.ro/
  589 * http://www.ebu.ch/tech_t3285.pdf
  590 * http://www.sr.se/utveckling/tu/bwf
  591 * http://ftp.aessc.org/pub/aes46-2002.pdf
  592 * http://cartchunk.org:8080/
  593 * http://www.broadcastpapers.com/radio/cartchunk01.htm
  594 * http://www.hr/josip/DSP/AudioFile2.html
  595 * http://home.attbi.com/~chris.bagwell/AudioFormats-11.html
  596 * http://www.pure-mac.com/extkey.html
  597 * http://cesnet.dl.sourceforge.net/sourceforge/bonkenc/bonk-binary-format-0.9.txt
  598 * http://www.headbands.com/gspot/
  599 * http://www.openswf.org/spec/SWFfileformat.html
  600 * http://j-faul.virtualave.net/
  601 * http://www.btinternet.com/~AnthonyJ/Atari/programming/avr_format.html
  602 * http://cui.unige.ch/OSG/info/AudioFormats/ap11.html
  603 * http://sswf.sourceforge.net/SWFalexref.html
  604 * http://www.geocities.com/xhelmboyx/quicktime/formats/qti-layout.txt
  605 * http://www-lehre.informatik.uni-osnabrueck.de/~fbstark/diplom/docs/swf/Flash_Uncovered.htm
  606 * http://developer.apple.com/quicktime/icefloe/dispatch012.html
  607 * http://www.csdn.net/Dev/Format/graphics/PCD.htm
  608 * http://tta.iszf.irk.ru/
  609 * http://www.atsc.org/standards/a_52a.pdf
  610 * http://www.alanwood.net/unicode/
  611 * http://www.freelists.org/archives/matroska-devel/07-2003/msg00010.html
  612 * http://www.its.msstate.edu/net/real/reports/config/tags.stats
  613 * http://homepages.slingshot.co.nz/~helmboy/quicktime/formats/qtm-layout.txt
  614 * http://brennan.young.net/Comp/LiveStage/things.html
  615 * http://www.multiweb.cz/twoinches/MP3inside.htm
  616 * http://www.geocities.co.jp/SiliconValley-Oakland/3664/alittle.html#GenreExtended
  617 * http://www.mactech.com/articles/mactech/Vol.06/06.01/SANENormalized/
  618 * http://www.unicode.org/unicode/faq/utf_bom.html
  619 * http://tta.corecodec.org/?menu=format
  620 * http://www.scvi.net/nsvformat.htm
  621 * http://pda.etsi.org/pda/queryform.asp
  622 * http://cpansearch.perl.org/src/RGIBSON/Audio-DSS-0.02/lib/Audio/DSS.pm
  623 * http://trac.musepack.net/trac/wiki/SV8Specification
  624 * http://wyday.com/cuesharp/specification.php
  625 * http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/Nikon.html
  626 * http://www.codeproject.com/Articles/8295/MPEG-Audio-Frame-Header
  627 * http://dsd-guide.com/sites/default/files/white-papers/DSFFileFormatSpec_E.pdf