[FFmpeg-user] Approx. 15 seconds delay when re-streaming h.264 to RTMP

[Archil Matchavariani]

Hi.

I'm trying to re-stream h.264 packets to rtmp server, using the following
command:
ffmpeg -i rtsp://root:pass@xxx.xxx.xxx.xxx:554/live?tcp -vcodec copy -f flv
rtmp://xxx.xxx.xxx.xxx/live/teststream

The resulting stream hangs on the first frame for some time, then resumes
playback, with approximately 15 seconds of delay.

If I let FFMPEG re-code the stream to FLV via following command:
ffmpeg -i rtsp://root:pass@xxx.xxx.xxx.xxx:554/live?tcp -f flv
rtmp://xxx.xxx.xxx.xxx/live/teststream

The stream works fine and has minimal delay, but the resulting quality
naturally lower.


Any idea how to remove the delay on re-stream? I'm using latest 0.8
(oldapi) of FFMPEG.

Thanks!