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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-1.2
Source code repository
Both of implementations depend on the following libraries...
libogg-1.3.6
libvorbis-1.3.7
libSDL 1.2
or later for the playback example
Documentation
Frequently Asked Questions
Theora Format Specification
libtheora 1.1 API reference
libtheora 1.2 API reference
Binaries
Downloads to help you play or encode Ogg Theora files.
ffmpeg2theora
command line encoder
VLC player
Helix Player
Windows Media plugins
Apple Quicktime
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