HandBrake is an opensource GPLlicensed multiplatform multithreaded video transcoder available for MacOS X.(Handbrake Download for Mac)
Properties: Any DVD or Bluraylike source; VIDEO-TS folder, DVD image, real DVD or bluray (unencrypted_removal of copy protection is not supported), and some .VOB, .TS and M2TS files, mostany multimedia file it can get libavformat to read and libavcodec to decode.
Audio: AAC, CoreAudio AAC (OS X Only), MP3, or Vorbis. AC-3 pass through DTS pass-thorugh MKV only, Video: MPEG-4(ffmpeg), H.264(x264), or Theora(libtheora), File format: MP4(M4V) and MKV
OS: Mac OS X 10.5, 10.6 (x32bit-x64bit)
HandBrake Download (Intel 64bit) for Mac
HandBrake Download (Intel 32bit) for Mac