Theora
From Just Solve the File Format Problem
(Difference between revisions)
(Created page with "{{FormatInfo |formattype=electronic |subcat=Video |extensions={{ext|ogg}}, {{ext|ogv}} |pronom={{PRONOM|fmt/945}} |released=≤2008 }} '''Theora''' is a compressed video strea...") |
(Theora 1.0 alpha has been the first public release from 2003) |
||
| (3 intermediate revisions by 2 users not shown) | |||
| Line 4: | Line 4: | ||
|extensions={{ext|ogg}}, {{ext|ogv}} | |extensions={{ext|ogg}}, {{ext|ogv}} | ||
|pronom={{PRONOM|fmt/945}} | |pronom={{PRONOM|fmt/945}} | ||
| − | |released= | + | |released=2003 |
}} | }} | ||
'''Theora''' is a compressed video stream format. It is often used with the [[Ogg]] container format, resulting in a file format called '''Ogg Theora'''. | '''Theora''' is a compressed video stream format. It is often used with the [[Ogg]] container format, resulting in a file format called '''Ogg Theora'''. | ||
| Line 23: | Line 23: | ||
== Sample files == | == Sample files == | ||
* https://samples.ffmpeg.org/ogg/Theora/ | * https://samples.ffmpeg.org/ogg/Theora/ | ||
| + | * {{DexvertSamples|video/oggTheoraVideo}} | ||
== Links == | == Links == | ||
* [https://www.theora.org/ theora.org] | * [https://www.theora.org/ theora.org] | ||
* [[Wikipedia: Theora]] | * [[Wikipedia: Theora]] | ||
Latest revision as of 19:08, 9 April 2024
Theora is a compressed video stream format. It is often used with the Ogg container format, resulting in a file format called Ogg Theora.
Contents |
[edit] Identification
A Theora bitstream begins with the byte 0x80, followed by ASCII "theora". This signature will appear somewhere in most any kind of file containing Theora video.
A simple Ogg Theora file begins with "OggS", and has the Theora signature at offset 28. But the signature will appear later in an Ogg Skeleton (video+audio) file that uses Theora.
[edit] Specifications
See also Ogg#Specifications.
