From Hydrogenaudio Knowledgebase
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| =Descrition=
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| Ogg is a digital media [[container format]], developed by [[Xiph]], that can encapsulate various bitstreams, for audio or video [[codec]]s, arbitrary data (e.g. [[subtitles]]) or [[metadata]]. Its first purpose was to be the native container for the free codecs developed by [[Xiph]], and it was developed alongside with the [[Vorbis]] codec.
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| ==Features== | | ==Features== |
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| * RFC 3533 The Ogg Encapsulation Format Version 0 | | * RFC 3533 The Ogg Encapsulation Format Version 0 |
| * RFC 3534 The application/ogg Media Type | | * RFC 3534 The application/ogg Media Type |
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| =Main uses=
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| Here are the typical bitsreams contained in Ogg:
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| ==Audio==
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| * [[Vorbis]] for general [[lossy]] compression (aka Ogg Vorbis, the first and classical use of Vorbis)
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| * [[Speex]] for voice [[lossy]] compression
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| * [[FLAC]] for [[lossless]] compression
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| ==Video==
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| * [[Vorbis]] sound and any video codec, usually [[MPEG-4]] codecs like [[DivX]] or [[XviD]] (aka [[OGM]], Ogg Multimedia)
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| * [[Vorbis]] sound and [[Theora]] video, using only free and patent-clear (as claimed) formats from [[Xiph]] (aka Ogg Theora)
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Revision as of 03:21, 9 October 2005
Features
- encapsulation and interleave of multiple data streams,
- packet framing
- error detection
- seeking
All in a small, bounded percentage bitrate overhead.
Also, Ogg format specification is now published within the IETF in the following RFCs:
- RFC 3533 The Ogg Encapsulation Format Version 0
- RFC 3534 The application/ogg Media Type
