[FFmpeg-user] Webcam capture

[Rodolfo Medina]

Hi all.

When capturing video from webcam, with:

 $ ffmpeg -f video4linux2 -s 3200x2400 -i /dev/video0 -vb 20M out.mpg

, out.mpg stops, freezes, gets stuck at the beginning for a few seconds.  Only
at the beginning and only for a few seconds.  I thought the problem was related
to the cheap low-quality webcam but it completely disappears when I do instead:

 $ mencoder tv:// -tv driver=v4l2:width=640:height=480:device=/dev/video0:forceaudio:alsa:adevice=hw.1,0 -ovc lavc -oac mp3lame -lameopts cbr:br=64:mode=3 -o webcam.avi

So what could the cause be of the problem with ffmpeg?

Thanks for any help.

Rodolfo