What is MediaInfo?
MediaInfo supplies technical and tag information about a video or audio file.
This is free software (free of charge and free to access source code: GPL or LGPL licence)
What information can I get from MediaInfo?
General: title, author, director, album, track number, date, duration...
Video: codec, aspect, fps, bitrate...
Audio: codec, sample rate, channels, language, bitrate...
Text: language of subtitle
Chapters: number of chapters, list of chapters
What format (container) does MediaInfo support?
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...
What can I do with it?
Read many video and audio file formats
Different methods of viewing information (text, sheet, tree, HTML...)
You can customise these views
Exporting information as text, CSV, HTML...
Graphical Interface, or Command Line, or DLL
Integration with MS-Windows shell (drag 'n' drop, and Context menu)
Internationalisation: any language display on any version of your Operating System
Localisation capability (but volunteers needed)
http://mediainfo.sourceforge.net/en
thx zver for pointing it out in the first place