[theora] Re: Quicktime Vs Windows encoding with VP3
tojimbarnes at hotmail.com
Sat Oct 19 01:08:05 PDT 2002
Okay sorry I dont know enough about VBR etc yet but I got that
This is how I came to have the OV codec in win2000
There are three dls at On2 for VP3-Theora on a PC
One for Avi, One for QT, and one comes with VP vision.
When I installed the last of these I suddenly got OV1 2 and 3 as a
selection in the audio codecs in all my editors.
I assume from what you say then that this is an audio only codec and should
only be used as such.
Its just strange that they are in there and they work or at least thats what
the summary of the file under win2k shows. The file shows OV as the audio
codec and VP3 as the video codec.
The interleave was set to one frame and I have no sync problems, just a file
thats bigger when I expected it to be smaller
I used FlaskMpeg to encode both the files
<p>----- Original Message -----
From: "Christian HJ Wiesner" <cwiesner at t-online.de>
To: <theora at xiph.org>
Sent: Saturday, October 19, 2002 5:45 PM
Subject: [theora] Re: Quicktime Vs Windows encoding with VP3
<p>> There is no 'allowed' way of using Vorbis within AVI, because ACM audio
> codecs are only allowed to be CBR, not ABR/VBR. There is a modification of
> Virtualdub called 'nandub' that can mux Lame MP3 VBR/ABR strams into AVI,
> but it breaks AVI specs, playback works only on Windows using MP3 Dshow
> filters and in mplayer for Linux, all other players on most other OSes
> to keep audio and video in sync AFAIK.
> There was a Vorbis ACM codec floating through the net some time ago, some
> guys reported it works with AVI, but quality is bad and there are severy
> sync problems.
> Please note that the inability to use Vorbis in AVIs was one of the main
> reasons for some projects to start work on replacing AVI with something
> modern, namely the OGM format made by Tobias Waldvogel ( based on Ogg
> framing ) and MCF.
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