1750 Ogg Theora Video Video Ogg is a free, open container format maintained by the Xiph.Org Foundation. The Ogg container format can multiplex a number of independent streams for audio, video, text, and metadata. Theora is a free, lossy video compression format also developed by the Xiph.Org Foundation. Text 1 Digital Preservation Department / The National Archives 21 Jul 2016 21 Jul 2016 fmt/945 PUID video/ogg MIME ogv File extension ogg File extension 1288 Ogg Theora Video variant 1 Ogg Page header: Capture pattern (“OggS”); stream structure revision (00h); flag: 1st page of a logical bitstream (02h) {22} '€theora' identifier, Major version 0x03, Minor version 0x02, Revision version 0x01 {32} next Ogg Page. 1 Absolute from BOF 0 0 4F6767530002{22}807468656F7261030201{32}4F676753 1289 Ogg Theora Video variant 2 Ogg Page Skeleton header (with 'fishead\0' identifier), followed by Capture pattern (“OggS”); stream structure revision (00h); flag: 1st page of a logical bitstream (02h) {22} '€theora' identifier, Major version 0x03, Minor version 0x02, Revision version 0x01 {32} next Ogg Page. 1 Absolute from BOF 0 0 4F6767530002{22}6669736865616400{56-72}4F6767530002{22}807468656F7261030201{32}4F676753 Can be contained by 1749 Ogg Multimedia Container Has priority over 1749 Ogg Multimedia Container