[FFmpeg-devel] [PATCH] libavformat/mpegtsenc: enforce PCR packets without payload

[Ali KIZIL]

Andreas Håkon <andreas.hakon at protonmail.com>, 25 Nis 2019 Per, 17:49
tarihinde şunu yazdı:

>
>
>
> ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
> On Thursday, 25 de April de 2019 16:23, Ali KIZIL <alikizil at gmail.com>
> wrote:
>
> > Andreas Håkon andreas.hakon at protonmail.com, 25 Nis 2019 Per, 12:07
> > tarihinde şunu yazdı:
> >
> > > Hi,
> > > A patch for a new optional parameter for the mpegtsenc muxer.
> > > Regards.
> > > A.H.
> > > ---_______________________________________________
> >
> > Is this patch related with "[FFmpeg-devel] [PATCH] libavformat: forced
> PCR
> > pid in mpegts muxer" patchwork ?
>
> No. They're complementary, but totally different patches/objectives!
>
> >
> > Is the purpose of the patch to avoid null stuffing in forced pcr pid ?
>
> No. The purpose is to avoid having PCR marks in packets with payload.
>
> >
> > I can not figure out the usage. A texi can be useful.
> > Normally, if PCR in on Video PID, why should I prefer to avoid video
> > payload ?
> >
>
> When you move the PCR marks to empty packets then you can transform the
> Transport Stream without touching the PES packets at all. Imagine a TS
> processor that duplicates or process the PCR packets for other purposes.
> As these packets doesn't have any payload the stream processor is free
> to do it whatever it needs. This is just one example. This option can
> be useful in various scenarios. In my research the target are several
> multi-resolution streams for mobile devices.
>
> In any case I have to say that this patch is completely transparent
> and only adds optional functionality.
>
> Regards.
> A.H.
>
> ---
>

I got the point. Yet, sorry for being curious, would can affect TR101 290
analyze results  and/or null stuffing on CBR mpegts out?
I can do these tests if needed, by tomorrow.