HandBrake is an open-source, GPL-licensed, multiplatform, multithreaded video transcoder, available for MacOS X, Linux and Windows.Supported Sources: Any DVD-like source: VIDEO_TS folder, DVD image or real DVD (unencrypted--protection methods including CSS are not supported internally and must be handled externally with third-party software and libraries), and some .VOB and .TS files Most any multimedia file it can get libavformat to read and libavcodec to decode. Outputs: File format: MP4 and MKV Video: MPEG-4, H.264, or Theora Audio: AAC, CoreAudio AAC (OS X Only), MP3, or Vorbis. AC-3 pass-through, DTS pass-thorugh (MKV only) Misc features: Chapter selection Subtitles Integrated bitrate calculator Picture deinterlacing, cropping and scaling Live Video Preview