[Vorbis] .ogg extension and Theora

[Paul Martin]

[Resend: sent to Cameron rather than the list by mistake, as I hadn't
noticed that the list no longer sets reply-to.]

On Fri, Jun 18, 2004 at 08:49:42AM +0800, Cameron Patrick wrote:
> Haxe wrote:
>
> | I personally would prefer *.ogv (not *ogt or again *ogm), but that's
> | indeed not important. It is only important that it differs from *ogg
> | and from other extensions that are not likely to be opened with a video
> | player application.
> [...]
> | No. Today, more than three letters are perfectly fine. But I think it's
> | not necessary. *.ogv would serve well.
>
> I think that truncating the "ogg" bit in the extension is kind of ugly
> and not really necessary these days.  How about ".oggv" or even ".oggvid"?
> Not that it matters ;-)

CD-ROMs and standalone audio/video players. Strict ISO9660 compliance
means you have to stick to the 8.3 convention. If a player doesn't
understand either Rock Ridge or Joliet extensions, some mangling will
have to happen in the CD-ROM authoring side.

I agree that something should be at least suggested by Xiph now, before
a de facto standard comes from the users, which may be something
technically worse than what Xiph is objecting to at the moment.

.oga and .ogv seem perfectly reasonable suggestions to me. Purists can
still use .ogg for everything.

I suggest using:

.oga for content that has a majority audio content (ie. any other
content is supplementary to the audio). This includes Vorbis, FLAC,
Speex, MIDI, Vorbis+subtitles.

.ogv for content that has a majority visual component, eg. Theora,
Theora+Vorbis, Tarkin, Dirac, a slideshow, etc.

--
Paul Martin <pm at zetnet.net> (work)
<pm at nowster.zetnet.co.uk> (home)