Ogg Theora is Xiph.Org\'s first publicly released video codec, intended for use within the Ogg\'s project\'s Ogg multimedia streaming system. Theora is derived directly from On2\'s VP3 codec and is a superset of VP3.
Ogg Theora是Ogg\'s project\'s Ogg多媒体流系统上的第一个视频编码/解码器的公开版本。起源于On2\'s VP3 codec,是VP3的超集。