splitmuxsink passing buffers in bursts

[Nicolas Dufresne]

Le mer. 2 oct. 2019 09 h 55, logidelic <bill at orbit.org> a écrit :

> Hi Gruesse,
>
> Thank you for the response. I will investigate this, but it doesn't quite
> make sense to me. I can certainly understand that the split can't happen
> except at the end of a GOP, but aside from that why would splitmuxsink be
> any different from any other mux/sink in its requirement to wait for a
> complete GOP before passing to the muxer (in my case matroskamux) sink?
>

I believe the speed at which data is mixed is not controlled, it should
pretty much reflect the source behavior.


> Thanks!
>
> Bill
>
>
>
> Thornton, Keith wrote
> > Hi,
> > In order to split properly I think you'll find that splitmuxsink needs to
> > write complete GOPs. So it needs to collect gops before writing them out.
> > Gruesse
> >
> > -----Ursprüngliche Nachricht-----
> > Von: gstreamer-devel <
>
> > gstreamer-devel-bounces at .freedesktop
>
> > > Im Auftrag von logidelic
> > Gesendet: Dienstag, 1. Oktober 2019 22:28
> > An:
>
> > gstreamer-devel at .freedesktop
>
> > Betreff: splitmuxsink passing buffers in bursts
> >
> > I have a pipeline which uses splitmuxsink to write to a file. I noticed
> > immediately that, as opposed to filesink, the file only gets updated in
> > (relatively) infrequent bursts, rather than regularly if using a regular
> > filesink.
> >
> > This is not due to filesink's buffering mode: I tried them all and it had
> > no effect.
> >
> > Just to be sure, I switched splitmuxsink to use an appsink instead of a
> > filesink and, indeed, the appsink's new_sample callback is called in
> > bursts, instead of being called regularly if we use a straight appsink
> > without splitmuxsink.
> >
> > In case you were wondering I set the appsink's sync property to FALSE.
> > Indeed, with all settings in the pipeline identical, except for the
> > existence of splitmuxsink, I see that with splitmuxsink buffers arrive at
> > the final sink in bursts, whereas they arrive regularly otherwise.
> >
> > Any ideas what causes this and if there is a setting that can fix it?
> > Getting the buffers in a timely manner is important in my case...
> >
> > Thank you!
> >
> >
> >
> > --
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