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Theora is a free, lossy video compression format believed to be patent unencumbered. Originally based on TrueMotion VP3 from On2 Technologies which released it to the free software community, it is developed by the Xiph.Org Foundation and is comparable to Xvid regarding compression efficiency. Most of the time is it found muxed with Vorbis audio in an Ogg container with the .ogv file extension.

It is used for the video tag of HTML5 in several browsers such as Mozilla Firefox, Google Chrome, Chromium, Opera, SeaMonkey and can also be viewed in Safari if the Xiph QuickTime Components are installed.

Please submit only sites pertaining to the Theora video codec only. Software mainly geared towards this codec is also welcome.
VP8 is an open video compression format originally developed by On2 and bought and released to the open source community by Google. All users are granted a worldwide, non-exclusive, royalty-free patent license. Comparable to H.264 Baseline Profile when it comes to compression efficiency, it is found in WebM container along with Vorbis audio.

It is used for the video tag of HTML5 in several browsers such as Mozilla Firefox, Google Chrome, Chromium, Opera and can also be viewed in Internet Explorer if a third party add-on is installed.
Please submit only sites pertaining to the VP8 video codec and the WebM format only. Software mainly geared towards this codec is also welcome.