[FFmpeg-user] UDP Packet size option

Sajjad Moshen sajjad.moshen at gmail.com
Mon Oct 13 10:24:10 CEST 2014

Thanks for the suggestions, as far as the flush packets command is
concerned I will try that today.

But in respect to omitting the command from decoder side, this isn't
possible as the decoder is set up to receive streams directed to its IP.
And as such, I cannot configure it to receive the stream without the
pkt_size option.

The problem is that it simply doesn't recognize the stream with the added
option. It's an Ericsson RX8200 in case anyone is wondering.
On 13 Oct 2014 09:18, "Moritz Barsnick" <barsnick at gmx.net> wrote:

> Hi Sajjad,
> On Sun, Oct 12, 2014 at 03:34:32 +0100, Sajjad Moshen wrote:
> > I've been trying to get my decoder to read my UDP feed but for some odd
> > reason it doesn't like when I add the ?pkt_size=1316 option to my unicast
> > stream.
> ffmpeg is your encoder and some other program is your decoder, right?
> And that other program doesn't cope with '?pkt_size=1316' in the URL?
> > question is if there is another way to insert the MTU override setting in
> > the CLI without placing it right at the end of the stream?
> >
> > ffmpeg -re -i rtmp://x -vcodec mpeg2video -r 25 -flags cgop+ilme
> > -sc_threshold 1000000000 -b:v 2M -minrate:v 2M -maxrate:v 2M -bufsize:v
> > 0.2M -muxrate 2.5M -acodec mp2 -ac 2 -b:a 224k -f mpegts udp://
> >
> Your decoder doesn't need the "?pkt_size=1316" part of the URL. Just
> omit that on its side.
> Moritz
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