Difference between revisions of "Avdump"

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   - Improved/fixed ogm and avi track size calculation.
   - Improved/fixed ogm and avi track size calculation.
     - Error was less than ~30 KB for a normal file.
     - Error was less than ~30 KB for a normal file.
   - Fixed samplerate=0 when audio not voribs and added PCM recognition in ogm parser.
   - Fixed samplerate=0 when audio not vorbis and added PCM recognition in ogm parser.
   - Fixed wrong AR printed when > 1.70.
   - Fixed wrong AR printed when > 1.70.
   - Fixed missing zeros at beginning in crc32 checksums.
   - Fixed missing zeros at beginning in crc32 checksums.

Revision as of 00:57, 14 January 2007

What is it

Avdump is a video codec identification utility - identifies which video codec and audio compression method is used on video files. Furthermore it calculates the used bitrates, the length, identifies the number of used audiochannel and more.
It is mainly based on mediainfo, but got enhanced and changed to fit anidb's needs by Epoximator.
Avdump was created with the intention to provide anidb with a tool to standarize the input. Furthermore it will become part of the upcoming AOM 0.6 allowing to autocreq all the generated informations.

Supported formats

  • Video : MKV, OGM, AVI, DivX, WMV, QuickTime, Real, MPEG-1, MPEG-2, MPEG-4, DVD (VOB)...
(Codecs : DivX, XviD, MSMPEG4, ASP, H.264, AVC...)
  • Audio : OGG, MP3, WAV, RA, AC3, DTS, AAC, M4A, AU, AIFF...
  • Subtitles : SRT, SSA, ASS, SAMI...

Known issues

Note: Avdump is under development. Don't take the validity of its output for granted. Please report errors/issues.

  • Audio channel detection is very simple:
    • Number of channels might be wrong. (5.1 vs 6.1, 6.1 vs 7.1)
    • No check of actual data in channels. (dummy channels)
  • MP3 VBR check does only detect bitrate switching. (variable frame size)
  • Missing bits in obscure containers (ie. not mkv/ogm/avi/mp4). Waiting for mediainfo to support this.
    • No fps for asf/wmv files.
    • ...
  • Avdump is only for windows at the moment. It should work in wine, though.


Get your copy of avdump HERE! Old versions are here.


Avdump is a simple commandline client and as that is to be used in the dosbox:

avdump [-ext:<extensions>] [-log:<log file>] <media file/folder> [<media file/folder> ...]

Options: (one letter switches can be put in one string)
   ext      comma separated extension list
   log      write output to file
   ac       autocreq: '-ac:username:apipass'
   port     udp port used by ac
   exp      export ed2k-links to file
 Output: (exclusive)
   s        Short (creq friendly)
   l        List (codecs)
   x        XML Old format
   y        XML Creq format
   r        Random file order
   p        Pause when done (hold cmd window)
   q        pause after each file
   t        print Time used for each file
   n        add extra Newline after each file
   i        skIp full parsing (only for testing)
   0        crc32
   1        ed2k
   2        md5
   3        sha1
   5        tth
   6        aich
   a        All hash algorithms
   h        Hash mode (no a/v parsing)
   e        print Ed2k link
   d        print aniDb link
   g        print and Goto anidb link
   u        print time Used

Alternative way of usage

  • Extract to a folder of choice
  • Right-click avdump.exe, select "Create Shortcut"
  • Right-click the shortcut, add " -p" to the "Shortcut - Target" line
Example: "C:\program files\Codecs\avdump\avdump.exe" -p
Optional: Change "Run" to "Maximized"
you can also set other options like s, x or t if you wish to do so.
  • Move shortcut to C:\Documents and Settings\[Username]\SendTo
[Username] is your WinXP LogIn-Name
  • Right-click any media-file, goto "Send To", choose avdump (or whatever you called the shortcut)
  • Be happy :D
  • Get CReqing

(thanks to taxit for this tip)


Avdump is now part of a new autocreqing system. Some more or less important notes:

  • To be able to use this feature you’ll need an AniDB account and you have to define the api password in your profile. All data sent to the server will be logged with ip and uid.
  • Communication between client and server is one-way (except session init/refresh); the client does not receive any confirmation for sent data. This means that there is no guaranty that all the dumps you send will arrive at the server and stored in the database, and there is no way to check this.
  • Sessions are based on ip+port; check your firewall and router settings to make sure the port is not changed (NAT/whatever). Use -port:nnnn to override the default port avdump use.
  • There is no direct connection between data sent to AniDB and creqs generated. The data received will just be stored for later processing. There is no way to check the current status for a dump. Usually, it should take at least 48 hours from the moment you dump a file till the data actually changes. If any irregularities occur, or when there is too much data pending, it will take more time.
  • The creqs generated will report the user who sent the data first (for a specific file) as the creqer.
  • You may dump files currently not in the db. The data is still stored and will be used later if/after the file is added. It might also be used for machine assisted file adding at some point.
  • Files creqed by the new system will be locked, meaning some fields will not be possible to change. Notify a moderator if you are sure that some of the data locked for a specific file is wrong.
  • Not all dumps are sent to the server; Only mkv, ogm, avi, mp4, mov, rm and mpeg dumps from non corrupted files are sent:
    • The asf parser does not detect fps.
    • Audio files are too few and not considered important atm.
    • Nothing useful can be extracted from archives and subtitles (that I can think of).
    • Corruption means that the parser fails and the extracted data can not be trusted.


Ask Epoximator for the source if interested.

Based on


0.29 : 070113 - importance: high
 - Autocreq
 - Ed2k export to file (-exp:<file>).
 - Various forgotten fixes and changes.
0.28 : 061123 - importance: test version
 - Fixed broken duration for vorbis in ogm (was 0).
 - Fixed broken language detection.
 - Fixed/removed default track flag in ogm.
 - Changes in the switches: y = XML2+autocreq, c = autocreq.
 - Added SBR detection for AAC in mp4.
 - Added x264 settings string to XML2 for mkv.
 - New mediainfo.
0.27 : 060927 - importance: low
   * This is an experimental version for a new autocreq system.
   * Due major internal changes it's likely to be borked.
   * Only upgrade if you want to help testing; use -c.
   * No actual creq will be filed, but data are gathered.
 - Improved/fixed ogm and avi track size calculation.
   - Error was less than ~30 KB for a normal file.
 - Fixed samplerate=0 when audio not vorbis and added PCM recognition in ogm parser.
 - Fixed wrong AR printed when > 1.70.
 - Fixed missing zeros at beginning in crc32 checksums.
0.26 : 060912 - importance: low
 - Changes in the xml mode; formatted time and exact channels value.
 - Added option to skip parsing altogether (hash only mode).
 - Added switch '-ext:{comma separated file extension list}'.
 - Changes in the arguments. See usage.
0.25 : 060907
 - Added md5 hash.
 - Added ed2k link output.
 - Changes in the arguments. See usage.
 - Fixed extension check (case).
0.24 : 060902
 - Added 5.1 audio bitrate test; if under 100 kbps then print warning.
 - Added Matroska attachment support; used when checking overhead.
 - Added hashing; crc, ed2k, sha1, tth and aich.
0.23 : 060817
 - Changed: log file is now utf8.
 - Fixed video vs audio duration issue with non mkv/ogm files. (fid: 252353)
0.22 : 060806
 - Fixed unicode-in-file-name issue.
 - Added VFR test for mp4 files.
 - Added switch 'c': pause after each file.
 - Changes in AR rages and removed 'Wrong AR'.
 - Minor fixes and changes.
0.21 : 060726
 - Fixed codec detection in private frame (user data).
 - Added switches 'a' (avi), 'm' (mkv), 'o' (ogm), and 'f' (mp4): Only parse these types.
 - Added switch 'l': list mode ({file path/name}\t{track #1 codec}\t...\t{track #n codec}).
 - Added switch 'i': skip full parsing (mkv/ogm/avi). Only for testing. Do _not_ use when creqing.
0.20 : 060717
 - Added return code in xml mode and more warnings in the other modes.
 - Fixed mp4 parser; audio track sizes.
 - Fixed mkv crash on corrupt files (fid: 216911).
 - Fixed wrong track duration on mkv files where the first timecode is not 0 (fid: 234960).
0.19 : 060711
 - Fixed rm parser.
 - Fixed mpeg parser, video bitrate.
 - Minor stuff.
 - Short format does _now_ print video duration.
 - Improved the mp3 vbr test. (fid: 240676)
0.18 : 060624
 - MP4 fixes: sub tracks, track lang, missing chan/srate.
 - Updated MediaInfoLib (latest cvs).
 - Minor changes in normal output format (duration and size).
 - Short format does now print video duration (ie. not header value).
0.17 : 060602
 - Added extension check.
 - Changes xml output.
 - Fixed memory leak when parsing mp4.
0.16 : 060529
 - Fixed some RIFF bugs.
 - Fixed randomizor bug.
 - Updated anidb codec identifiers.
 - Added jni.
 - Changes in xml and short mode.
0.15 : 060518
 - Updated libebml, libogg, libvorbis.
 - Added switch 'r': random file order.
 - Added switch 'n': extra newline per file.
 - Changes in 'short' output mode.
 - Track numbering starts on 1 now.
 - Changes in ar detection, see: http://wiki.anidb.info/w/Avdump/AR
 - Fixed: Track sizes might be slightly wrong for OpenDML files.
 - Packed exe and dll (UPX 2.00w).
0.14 : 060514
 - Added anidb AR, flags and chan str to normal output.
 - Added new output mode: short (-s).
 - Added switch -t: show proc time (per file).
 - Fixed high mem usage bug on some file formats.
 - Fixed access violation on files with very many tracks.
 - Added track names (mkv only).
 - Added version in output.
 - Some tweaking of output format.
0.13 : 060511
 - Fixed wrong track durations for some mkv files.
 - Added anidb channel id (only in xml).
0.12 : 060510
 - Improved VFR check.
 - Added anidb video flags (only in xml).
0.11 : 060509
 - Added anidb codec id for ogm (and fixed a minor issue for some mkv files).
 - Added simple VFR check for mkv files.
0.10 : 060501
 - Added MP3 VBR check on avi and mkv files (variable frame size check).
 - Added xml output (-x).
 - Added anidb codec id, and some checking on fourcc vs user data.
 - Added anidb lang and ar id (only printed in xml mode).
 - Fixed some issues with mp4, rm and mpg files.
0.09 : 060401
 - Fixed track size for all non mkv/ogm/avi/mp4.
 - Changes in the output format.
0.08 : 060330
 - Exe is now unicode.
 - Fixed wrong output for avi files with multiple audio tracks.
 - Added better track size calc for avi files. (first try)
 - Added track duration.
0.07 : 060314
 - Fixed broken ogm parsing (language).
0.06 : 060305
 - Fixed wrong duration for some mkv files.
 - Fixed wrong track size for some mkv files.
0.05 : 060221
 - Improved USER data check.
 - Killed some memory leaks.
0.04 : 060217
 - Fixed 'AAC in OGM' crash.
 - Added check for USER data in mkvs and ogms.
 - Cleaned codec output for mkvs.
 - Added some filecomment output.