[Ffmpeg-devel] PTS / DTS with XViD
Tue Jul 18 20:53:50 CEST 2006
On Tue, Jul 18, 2006 at 10:32:40AM +0100, M?ns Rullg?rd wrote:
> Rich Felker said:
> > On Tue, Jul 18, 2006 at 08:39:04AM +0100, M?ns Rullg?rd wrote:
> >> >> OGM doesn't know anything about B-frames (it has all the same
> >> >> limitations as AVI in that regard). And all containers I've ever
> >> >> heard of store frames in decoding order.
> >> >> --Loren Merritt
> >> >>
> >> > Are you sure?
> >> >
> >> > Both of these sites indicate that there should be B-frame support:
> >> > http://www.divxland.org/container_formats.php
> >> > http://en.wikipedia.org/wiki/Comparison_of_container_formats
> >> Both are wrong, as is to be expected of sites like those. Which do
> >> you trust, random websites or people who actually read specs and write
> >> code?
> > I have plenty of OGM files with B frames.
> Perhaps, but that doesn't mean the format supports it.
The OGM format is not sanctioned by Xiph and was designed by windows
kiddies to store "DirectShow content" in OGG. Thus it should probably
be interpreted just like AVI..
> > If OGM only has one
> > timestamp then it almost surely needs to be interpreted as dts, not
> > pts... :(
> Yes, probably.
Yet another broken format... :(
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