[FFmpeg-user] facing max delay reached. Need to consume packets. RTP missed packets

[Chris Miceli]

Hi Usman,

I don't think that this is a client problem. I think that the server might
be lagging behind real-time stream.
The output you have there appears to say it's 4.6 fps and i imagine that
the native file is meant to be higher frame rate than that?

The output which will help diagnose this is the server side. My
recommendation is the following:
 - use ffmpeg's "re" flag for replaying files when streaming
 - preset slow might be too much for the server (you would need to check
it's perf with the command running in htop)

This said, I have to guess a little bit with the amount of information
which I have. Perhaps something from the server logs will help.

*Chris Miceli*



On Mon, Sep 28, 2020 at 6:04 PM USMAN AAMER <bitf13m541 at pucit.edu.pk> wrote:

> Hi Chris,
> I have observed that the machine that is receiving stream is lack behind as
> the streaming server approaches the fps count of around 200 or above when
> the client starts streaming the fps. Kindly guide me. should I replace the
> client machine?
>
> Thanks.
>
> On Mon, Sep 28, 2020 at 12:52 PM Chris Miceli <chris at miceli.net.au> wrote:
>
> > Hi Usman,
> >
> > You may wish to look into whether the machine which is encoding is able
> to
> > keep up realtime when you see something like this. More than likely, it
> is
> > running out of resources (either from encoding or from the source
> material
> > in the form of a bad network mount). Without more information about the
> > exact setup, the encoding command and the hardware utilisation
> information
> > (from something like top) it is going to be particularly difficult to get
> > to the bottom of.
> >
> > A potentially useful addition to these kinds of bug reports might be an
> > atop record (https://www.atoptool.nl/) to allow investigation of the
> > system
> > at the time of encoding as well. Caveat being that this will only work on
> > Linux. I'd love to hear what others here think about this kind of thing
> as
> > well, potentially with a script in the git repo people can run.
> >
> > Many thanks,
> > *Chris Miceli*
> >
> > On Mon, Sep 28, 2020 at 5:08 PM Tom Sparks <tomasparks.ts at gmail.com>
> > wrote:
> >
> > > On 28/09/2020, USMAN AAMER <bitf13m541 at pucit.edu.pk> wrote:
> > > > Hi,
> > > > I am streaming videos on LAN using ffmpeg - VP9 encoding and facing
> the
> > > > issue at client (screenshot is attached): "max delay reached. Need to
> > > > consume packets. RTP missed packets"
> > > > how to resolve this?
> > > > [image: image.png]
> > > >
> > > Can include the command line of ffmpeg
> > > also do not use screenshots, copy and paste the output
> > >
> > > tom
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