[FFmpeg-user] ffplay RTSP listen mode with UDP

[Roee Kashi]

any lead on this issue?

2018-03-08 12:10 GMT+02:00 Roee Kashi <galacap at gmail.com>:

> Hi,
>
> i'm trying to use RTSP to push video from client to server.
> it works on TCP, but fails on UDP.
>
> server side:
> > ffplay.exe -rtsp_flags listen rtsp://0.0.0.0:14000/test
>
> client side (TCP mode):
> > ffmpeg.exe -re -i <file> -rtsp_flags prefer_tcp -f rtsp
> rtsp://SERVER_IP:14000/test
>
> cliend side (UDP mode):
> > ffmpeg.exe -re -i <file> -f rtsp rtsp://SERVER_IP:14000/test
>
>
> when I open the ffmpeg in the client side in TCP mode, everything works,
> and i see the video stream in the server.
> But when i open the ffmpeg in the client side in UDP mode, the server
> writes an error:
> "bind failed error number -10048" (already in use)
>
> to try and investigate this problem a little bit, i set RTSP min port in
> the server to 6001.
> the result was the same, yet i could see (using netstat) ffplay listening
> on 6001 in UDP (and still writes the same binding error).
>
> seems like something in the RTSP reverse mode is not fully compatible with
> UDP mode, and it tries to bind the same port twice.
>
> is there a workaround to this matter?
>
> tested with Zeranoe build 20180307-5ab0ecf
>
> Roee.
>