Recording webcam / ffmpeg issues

Thu Dec 03, 2015 11:07 pm

Hi,

I am having issues with recording from my webcam using ffmpeg (2.8.3). It records for a few seconds and then it freezes.
Using kdenlive 0.9.10 / mlt 0.9.8 (Gentoo).

The webcam used is a Logitech C930e @ 1280x720 - 30fps (mjpeg).
I use 'Capture ALSA' and selected the pulseaudio device, which captures the sound from the webcam.

Are there perhaps some settings I can try to feed to ffmpeg to make the recording more successful?

$ kdenlive
[mp2 @ 0x7fcb14002ae0] Channel layout not specified
[mpeg @ 0x7fcb14000980] VBV buffer size not set, using default size of 130KB
If you want the mpeg file to be compliant to some specification
Like DVD, VCD or others, make sure you set the correct buffer size
[mpeg @ 0x7fcb14000980] buffer underflow st=0 bufi=2002 size=41355
[mpeg @ 0x7fcb14000980] buffer underflow st=0 bufi=2002 size=41355
[mpeg @ 0x7fcb14000980] buffer underflow st=0 bufi=4043 size=41355
[mpeg @ 0x7fcb14000980] buffer underflow st=0 bufi=6084 size=41355
[mpeg @ 0x7fcb14000980] buffer underflow st=0 bufi=8125 size=41355
[mpeg @ 0x7fcb14000980] buffer underflow st=0 bufi=10166 size=41355
[mpeg @ 0x7fcb14000980] buffer underflow st=0 bufi=12207 size=41355
[mpeg @ 0x7fcb14000980] buffer underflow st=0 bufi=14248 size=41355
[mpeg @ 0x7fcb14000980] buffer underflow st=0 bufi=16289 size=41355
[mpeg @ 0x7fcb14000980] buffer underflow st=0 bufi=18330 size=41355
[mpeg @ 0x7fcb14000980] buffer underflow st=0 bufi=20371 size=41355
[mpeg @ 0x7fcb14000980] buffer underflow st=0 bufi=22412 size=41355
[mpeg @ 0x7fcb14000980] buffer underflow st=0 bufi=24453 size=41355
[mpeg @ 0x7fcb14000980] buffer underflow st=0 bufi=26494 size=41355
[mpeg @ 0x7fcb14000980] buffer underflow st=0 bufi=28535 size=41355
[mpeg @ 0x7fcb14000980] buffer underflow st=0 bufi=30576 size=41355
[mpeg @ 0x7fcb14000980] buffer underflow st=0 bufi=32617 size=41355
[mpeg @ 0x7fcb14000980] buffer underflow st=0 bufi=34658 size=41355
[mpeg @ 0x7fcb14000980] buffer underflow st=0 bufi=36699 size=41355
[mpeg @ 0x7fcb14000980] buffer underflow st=0 bufi=38740 size=41355
[mpeg @ 0x7fcb14000980] buffer underflow st=0 bufi=40781 size=41355

Recording webcam / ffmpeg issues

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Recording webcam / ffmpeg issues

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