[FFmpeg-user] Use of the -t option with multiple output files.

[Carl Eugen Hoyos]

William C Bonner <wimbonner <at> gmail.com> writes:

> ffmpeg -s 1280x720 -f v4l2 -vcodec h264 -i /dev/video0 
> -copyinkf -vcodec copy -f rtp rtp://192.168.0.10:8090/ 
> -vcodec copy test.mp4
> 
> I want it to only run for a set period of time. For 
> testing I've been trying to use 30 seconds. What I've 
> not been able to figure out is where is the 
> appropriate place to put a "-t 30" in the command line.

That depends on your use case.

> When I was creating a single output file, I put it 
> right before the name of the output and everything 
> worked correctly.

> If I duplicate the -t 30 in front of each file things 
> work for the first 30 seconds, but then ffmpeg stops 
> visibly outputting, but doesn't exit.

Command line and complete, uncut console output missing.

> If I put it before the -i (input) ffmpeg doesn't stop 
> at 30 seconds.

Command line and complete, uncut console output missing.

Carl Eugen