Re: OT: on .ogg
| From: | Tristan McLeay <conlang@...> |
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| Date: | Saturday, March 5, 2005, 8:31 |
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On 5 Mar 2005, at 3.36 pm, Sally Caves wrote:
> "tribute money" to the .mp3 corporation to publish their work. And
> Vorbis
> claims the sound is just as good. And it's free.
'Vorbis' doesn't claim anything; Ogg Vorbis is just the codec. The
series of Ogg file formats include Ogg Vorbis (MP3-replacement: a lossy
audio codec, like JPEG for sound), Ogg Speex (a lossy audio codec
optimised for speech), Ogg FLAC (lossless audio codec, like PNG for
sound), Ogg Theora (WMV/QT etc.-replacement: a lossy video codec), Ogg
Tarkin (another lossy video codec with a significantly different
algorithm, IIUC) and Ogg Writ (a text codec, for subtitles in videos).
These different formats all take the extension .ogg, but internally are
quite different, and just because something supports Ogg Vorbis doesn't
mean it supports Ogg FLAC (non-standard extensions like .flac or .ogm
(Ogg media), but are not Approved of, and there's only one officially
approved MIME type, but a huge number of MIME types are ).
Vorbis and FLAC are relatively popular. Theora has only relatively
recently been finalised (compared to Vorbis), but I imagine it'll pick
up eventually.
The people behind Ogg are Xiph.org Foundation.
--
Tristan.
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