[FFmpeg-user] Reducing Latency while streaming desktop

[Roger Pack]

https://trac.ffmpeg.org/wiki/StreamingGuide#Latency may be of some use to you.
On Sat, Aug 25, 2018 at 12:24 PM Thomas Glanzmann <thomas at glanzmann.de> wrote:
>
> Hello,
> I would like to use ffmpeg to stream my windows 7 desktop to windows 10
> desktops on the same broadcast domain. Last week I used the following two lines
> for 5 days, it worked flawlessly but the latency was around 400ms. I would like
> to get below 50ms on a switched 1 Gbit ethernet network that has a
> latency of 0.3ms. Do you have any recommendations that I can try?
>
> I used one of the following two lines to capture my Windows 7 desktop:
>
> ffmpeg -f gdigrab -framerate 25 -i desktop -vcodec libx264 -pix_fmt yuv420p -tune zerolatency -preset ultrafast -f mpegts udp://236.0.0.1:2000
> ffmpeg -y -loglevel warning -f dshow -i video="screen-capture-recorder" -framerate 25  -vcodec libx264 -pix_fmt yuv420p -tune zerolatency -preset ultrafast -f mpegts udp://236.0.0.1:2000
>
> I used the following two lines to play:
>
> mpv.exe udp://236.0.0.1:2000 --no-cache --untimed --no-demuxer-thread
> ffplay -probesize 32 -sync ext udp://236.0.0.1:2000
>
> I used nightly builds both for ffmpeg and mpv.
>
> Cheers,
>         Thomas
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