MediaInfo

MediaInfo is a useful program that provides all information about audio and video files (author, director, album, track number, time, date, codec used, bitrate, dimensions, fps, subtitle language, sample rate, number of channels and audio language, and more). The program supports:

• 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... )
• Titles (SRT, SSA, ASS, SAMI... ).