MediaInfo
MediaInfo is a cross-platform library allowing you to read out technical and tag information from audio and video files in various formats.
Website: http://mediainfo.sourceforge.net/
Platforms supported: Win32, Linux
Headers to include: MediaInfo.bi
Header version: from October 2011
Website: http://mediainfo.sourceforge.net/
Platforms supported: Win32, Linux
Headers to include: MediaInfo.bi
Header version: from October 2011