Theora video compression

Theora is a free and open video compression format from the Xiph.org Foundation. Like all our multimedia technology it can be used to distribute film and video online and on disc without the licensing and royalty fees or vendor lock-in associated with other formats.

Theora scales from postage stamp to HD resolution and beyond, and is considered particularly competitive at low bitrates. It is in the same class as MPEG-4/DiVX, and like the Vorbis audio codec it has lots of room for improvement and encoder technology develops.

The bitstream format for Theora I was frozen Thursday, 2004 July 1. All bitstreams encoded since will remain compatible with future releases.

Source

The libtheora reference implementation provides the standard encoder and decoder under a BSD license. [libtheora-1.0] [Git master]

Both of implementations depend on the following libraries...

libogg-1.3.5
libvorbis-1.3.7
libSDL 1.2 or later for the playback example

Documentation

Binaries

Downloads to help you play or encode Ogg Theora files.