splitmuxsink passing buffers in bursts

[logidelic]

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?

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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