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can I use ffmpeg source type to capture from v4l

Posted: Sun May 11, 2014 11:35 pm
by hesral
Hi.

I was wondering if it was possible to somehow pass options to the ffmpeg source type in the source line, so that I can capture from my bttv card using ffmpeg? The card usually spits out a lot of bad lines using local source type. This does only happen at the very start of the video if I encode a video in ffmpeg. After a second or two, the card seems to settle down, recording beautiful error free video. I imagine therefor that the local source type starts and stops after every frame, never letting the card settle down.

I hope someone can help me with this, because the bad lines, made out of pixels from the other outputs, is really messing with the motion detection.

Re: can I use ffmpeg source type to capture from v4l

Posted: Mon May 12, 2014 12:16 am
by hesral
meh. Forget about it. ffmpeg doesn't want to capture from more than one channel from each device. So my 16 channel card would only be able to capture from 4 cameras.