HandBrake has been originally available on the BeOS platform, but now has been ported over to Mac OS X and to GNU/Linux.

Here are some key features of "HandBrake":

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

Limitations:

· Does not handle DTS audio tracks
· Does not handle single VOB files or any other file format

What's New in This Release: [ read full changelog ]

Core Library:
· BluRay disc structure support (No decryption support)
· Updated Libraries (x264, ffmpeg)
· SSA Subtitle support (Including burn-in)
· MP3 audio now supported in MP4 files (Note: Limited Player compatibility)
· VOBSUB subtitle now supported in MP4 files (Note: Limited Player compatibility)
· Updated Presets for newer devices and better quality
· AC3 encoding support
· Many Bug fixes and other small improvements
· Improved DVD Main Feature detection (when using dvdnav)
· Universal audio downmix support (all audio types can be downmixed)

All GUIs:
· Updated x264 Advanced Panel
· Video Quality Slider drops % value and only shows RF for x264
· Batch Scan (Scan Multiple files at once NB: Does not include multiple VIDEO_TS folders / Image files)
· Peak framerate option (Capped VFR)
· Many Bug fixes
· Many Tweaks to improve usability
· Ability to edit queue jobs
· Point-to-Point encoding (second or frame start and end times)

Mac GUI:
· New Audio Panel supporting >4 Audio Tracks
· VLC detection in /Applications an...