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.<br>
<br>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.<br>Mozilla will eventually host nice Theora files so it's a matter of days before such pages go public.<br>
<br>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 release.<br>
<br>LF<br><br><div class="gmail_quote">On Sat, Feb 7, 2009 at 20:07, Gregory Maxwell <span dir="ltr"><<a href="mailto:gmaxwell@gmail.com">gmaxwell@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div><div></div><div class="Wj3C7c">On Sat, Feb 7, 2009 at 12:11 PM, Maik Merten <<a href="mailto:maikmerten@googlemail.com">maikmerten@googlemail.com</a>> wrote:<br>
> Laurent Fraisse schrieb:<br>
>> We have a low-res Theora encoding up to test the streaming in Firefox<br>
>> 3.1 beta 3 at:<br>
>> <a href="http://ozprod.com/Firefox-in-Motion.html" target="_blank">http://ozprod.com/Firefox-in-Motion.html</a><br>
><br>
> Oh, that's nice content!<br>
><br>
> Just wondering why you've chosen to only give ~33 kbit/s to the audio<br>
> stream - that's perhaps pushing things too far compression wise for a<br>
> 44.1 kHz stereo audio stream.<br>
<br>
</div></div>The audio is, perhaps, worse than what I'd expect from even 33kbit/sec vorbis.<br>
<br>
I see there is no vendor string on the Vorbis track.<br>
Vorbis headers parsed for stream 1, information follows...<br>
Version: 0<br>
Vendor:<br>
Channels: 2<br>
Rate: 44100<br>
<br>
That is very strange— and I wonder if the audio was encoded by some<br>
broken Vorbis encoder. (There is only one that I'm aware of— FFMPEG<br>
has a home grown Vorbis encoder that is seriously worse than the<br>
Xiph.Org reference encoder, I'd never seen anyone use it until<br>
Archive.org managed to encode all their Ogv files with it. :( :( :( )<br>
<br>
Now checking I see that the broken ogv files on <a href="http://archive.org" target="_blank">archive.org</a> also have<br>
the same missing vendor string. This is really terrible. The output<br>
of the ffmpeg vorbis encoder is what I'd use if I were trying to make<br>
Vorbis look bad. :(<br>
</blockquote></div><br>