HandBrake is a free, open-source video transcoder for Windows, Linux and Mac OS X. It supports any DVD-like source and most multimedia files and can convert into the following formats:
File format: MP4 and MKV
Video: MPEG-4, H.264, or Theora (1 or 2 passes or constant quantizer/rate encoding)
Audio: AAC, MP3, Vorbis or AC-3 and DTS pass-through (supports encoding of several audio tracks) webupd8.org Тема!