Format
Ogg Theora Video
Summary
- Name
- Ogg Theora Video
- Identifiers
-
- PUID: fmt/945
- MIME: video/ogg
- Format type
- Video
- Description
- 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.
- File extensions
-
ogv,ogg - Source
- Digital Preservation Department / The National Archives
Relationships
- Can be contained by
- Has priority over
Internal signatures
Ogg Theora Video variant 1
- Note
- 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.
Byte sequences
- Min Frag Length
- Absolute from BOF
- Offset
- 0
- Max offset
- 0
- Byte Sequence
4F6767530002{22}807468656F7261030201{32}4F676753- Endianness
- None
Ogg Theora Video variant 2
- Note
- 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.
Byte sequences
- Min Frag Length
- Absolute from BOF
- Offset
- 0
- Max offset
- 0
- Byte Sequence
4F6767530002{22}6669736865616400{56-72}4F6767530002{22}807468656F7261030201{32}4F676753- Endianness
- None
Changelog
-
Added in V86
- Release date
- 27 July 2016
Ogg Theora Video: Signature developed through PRONOM Research. Requested by Preservica.
Ogg Theora Video: Full entry added. Requested by Preservica.