2016-12-03 15:26 GMT+01:00 bob Darkblue <[email protected]>:

> It works but there is a delay of ~1 second between the two screens.

> ffmpeg -f v4l2  -framerate 15 -video_size 1280x720 -input_format mjpeg -i
> /dev/video1 -f v4l2 -framerate 15  -input_format mjpeg -video_size 1280x720
> -i /dev/video0 -filter_complex "
> nullsrc=size=2560x720 [background];

> [0:v] setpts=PTS-STARTPTS,
> [1:v] setpts=PTS-STARTPTS,

Isn't this making sure that the two streams are not synchronised?

> ffmpeg version 3.2 Copyright (c) 2000-2016 the FFmpeg developers

Please remember to test current FFmpeg git head before asking
for support here.

Carl Eugen
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