Powerful DVD to MPEG-4 software, Handbrake, has been updated to version 0.9.2.

The new edition of the Mac user's trusty DVD ripping and media conversion solution now offers built-in support for Dolby Digital 5.1 surround sound in MP4 files and can export iPhone-compatible video.

Handbrake also offers multi-track audio support for Apple devices, more flexible anamorphic video, dynamic range compression for encoding from AC3 audio, numerous bug fixes, and faster H.264 encoding.

The free software - which is only available for Mac OS X 10.5 Leopard - provides support for the AppleTV 2 and the latest iPhone/iPod Touch firmware. Stability has also been improved.