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

Archil Matchavariani archil1983 at gmail.com
Wed Nov 2 12:11:30 CET 2011

Forgot to mention, I have latest librtmp linked in ffmpeg as well.


---------- Forwarded message ----------
From: Archil Matchavariani <archil1983 at gmail.com>
Date: Wed, Nov 2, 2011 at 1:07 PM
Subject: Approx. 15 seconds delay when re-streaming h.264 to RTMP
To: ffmpeg-user at ffmpeg.org


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

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

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.


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