FFmpeg (with MPEG-4 ASP output) and Theora (1 or 2 passes or constant quantizer encoding) Audio: AAC , MP3 , Vorbis , AC-3 pass-through, or DTS passthrough. (supports encoding of several audio tracks). Install on Ubuntu For Ubuntu (9.10 & later) users: run in terminal: sudo add-apt-repository ppa:stebbins/handbrake-releases sudo apt-get update