[theora] Video showcasing Theora in Firefox 3.1

Laurent Fraisse lfraisse at gmail.com
Sat Feb 7 23:19:04 PST 2009

You got it, I dumbly uploaded a nice 130MB file to Archive.org as I have no
idea whatsoever how to encode (and my colleagues don't know a bit about
Theora). Whatever the orginal quality the result was the same poor quality.

So far it's just about a test page for us, we didn't advertize it for sure.
I only mentioned it so you get the idea in the campaign about Theora +
Firefox 3.1.
Mozilla will eventually host nice Theora files so it's a matter of days
before such pages go public.

Sorry for the horrendous test, I know announcements should be made only when
everything is well fine-tuned. Right now that leaves some time for the
community to think about future Theora tests to advertize the FF 3.1 final


On Sat, Feb 7, 2009 at 20:07, Gregory Maxwell <gmaxwell at gmail.com> wrote:

> On Sat, Feb 7, 2009 at 12:11 PM, Maik Merten <maikmerten at googlemail.com>
> wrote:
> > Laurent Fraisse schrieb:
> >> We have a low-res Theora encoding up to test the streaming in Firefox
> >> 3.1 beta 3 at:
> >> http://ozprod.com/Firefox-in-Motion.html
> >
> > Oh, that's nice content!
> >
> > Just wondering why you've chosen to only give ~33 kbit/s to the audio
> > stream - that's perhaps pushing things too far compression wise for a
> > 44.1 kHz stereo audio stream.
> The audio is, perhaps, worse than what I'd expect from even 33kbit/sec
> vorbis.
> I see there is no vendor string on the Vorbis track.
> Vorbis headers parsed for stream 1, information follows...
> Version: 0
> Vendor:
> Channels: 2
> Rate: 44100
> That is very strange— and I wonder if the audio was encoded by some
> broken Vorbis encoder. (There is only one that I'm aware of— FFMPEG
> has a home grown Vorbis encoder that is seriously worse than the
> Xiph.Org reference encoder,  I'd never seen anyone use it until
> Archive.org managed to encode all their Ogv files with it. :( :( :( )
> Now checking I see that the broken ogv files on archive.org also have
> the same missing vendor string.  This is really terrible.  The output
> of the ffmpeg vorbis encoder is what I'd use if I were trying to make
> Vorbis look bad. :(
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