[Cin] OGG validation?

[Andrew Randrianasulu]

В сообщении от Sunday 15 March 2020 18:58:22 Good Guy написал(а):
> It appears to be the same basic code. Valid just means "ready to write".
> The queue is written until there are no more valid pages.  The older
> implementation does not have a "magic" queue limit (32).  I think that ogg
> has had so many mistaken implementations, that media exists with bad
> timestamp data, and the limit prevents some situations like, output a giant
> chunk of audio, and then output a giant chunk of video.  Not a good sign
> really.  A better move may be to mux data as long as you have both audio
> and video, and wait for more when it is not clear which should be next.
> Then the queue limit makes more sense, and the chunky effect is somewhat
> less likely.
> 

Yes, I commented a bit more on this in https://www.cinelerra-gg.org/bugtracker/view.php?id=313

It seems ogg/theora (video) combination is .. special. 

But as long as current players happy ...may be those complains from command line 
can be ignored/downgraded in their dev. priority?


> gg
> gg
> 
> On Sat, Mar 14, 2020 at 10:38 AM Andrew Randrianasulu <
> randrianasulu at gmail.com> wrote:
> 
> > I recall some strangeness with recently re-added OGG/theora output.
> >
> > I found this comment in old CinCV repo:
> >
> > https://repo.or.cz/cinelerra_cv/ct.git/commit/5d7c9bfd9dbfa3c4ae673a8c8b3d35ee1eb44512
> >
> > "r636: j^'s (j at v2v.cc) patch to mux ogg in a way compilant with
> > specification y - makes oggz-validate
> >  happy and probably some players also"
> >
> > I followed app name and landed here:
> >
> > https://www.xiph.org/oggz/
> >
> > Oggz
> > Oggz comprises liboggz and the tool oggz, which provides commands to
> > inspect, edit and validate Ogg files.
> > The oggz-chop tool can also be used to serve time ranges of Ogg media over
> > HTTP by any web server that supports CGI.
> > liboggz is a C library for reading and writing Ogg files and streams. It
> > offers various improvements over the reference
> > libogg, including support for seeking, validation and timestamp
> > interpretation.
> >
> > Download
> >  The latest version is 1.1.1, released Apr 29 2010.
> >
> > http://git.xiph.org/?p=liboggz.git;a=shortlog
> > git has some improvements over it ....
> >
> > I hope it will helpful in catching those strange errors about not marked
> > keyframes ...
> > --
> > Cin mailing list
> > Cin at lists.cinelerra-gg.org
> > https://lists.cinelerra-gg.org/mailman/listinfo/cin
> >
>