[FFmpeg-user] ffplay RTSP listen mode with UDP

Roee Kashi galacap at gmail.com
Wed Mar 14 20:53:47 EET 2018

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://
> 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.

More information about the ffmpeg-user mailing list