[FFmpeg-user] Streaming overseas

Manuel Alejandro malejandrodev at gmail.com
Tue Feb 19 09:10:48 EET 2019


I'll take a look at KCP (thanks for mentioning it!).
I'm really taking SRT to the limit for when problems or connection
interruptions occur. Apparently the implementation of SRT within FFMPEG has
some problems that do not happen when I use SRT-live-transmit with output
to udp while reading this output in FFPLAY:

srt-live-transmit
"srt://ipaddress-remote:10006?mode=caller&pksize=1316&latency=600"
"udp://:10007"

ffplay -hide_banner -nodisp -analyzeduration 0 -flush_packets 0 -probesize
32 -fflags nobuffer -f:a mpegts "udp://127.0.0.1:10007"

With this I achieve good results. I maintain the latency in 600ms even
after a connection interruption.


On Fri, Feb 15, 2019 at 12:52 AM Jack Waller <ffmpeg at gmail.com> wrote:

> On Fri, Feb 15, 2019 at 9:17 AM Manuel Alejandro
> <malejandrodev at gmail.com> wrote:
> >
> > I got the same result.
> >
> > Here a video where you can see how the music accelerates and then the
> > latency goes to 0 (What I hope is that when the connection is stabilized
> > again, the latency will remain at 600ms.)
>
> SRT is not the REAL packet lossless implementation when your network
> is not very stable.
>
> We use KCP(TCP over UDP) + FEC in this scenario.
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