HandBrake is an open-source, GPL-licensed, multiplatform, multithreaded DVD to MPEG-4 converter, available for MacOS X, Linux and Windows.

Supported sources:

* Any DVD-like source: VIDEO_TS folder, DVD image or real DVD (encrypted or unencrypted, but protection methods other than CSS are not supported and must be handled externally with third-party software), and some .VOB and .TS files
* PAL or NTSC
* AC-3, DTS, LPCM or MPEG audio tracks

Outputs:

* File format: MP4, MKV, AVI or OGM
* Video: MPEG-4 or H.264 (1 or 2 passes or constant quantizer/rate encoding)
* Audio: AAC, MP3, Vorbis or AC-3 pass-through (supports encoding of several audio tracks)

Misc features:

* Chapter selection
* Basic subtitle support (burned into the picture)
* Integrated bitrate calculator
* Picture deinterlacing, cropping and scaling
* Grayscale encoding