Delaying screenshot from webcam with mplayer

is there a way to delay screenshotting on mplayer? The parameter "-ss" doesnt work, because its not a seekable input.

Currently im using:

mplayer -nosound tv:// -tv driver=v4l2:device=/dev/video1 -frames 2 -vf screenshot -vo png:z=9

but the first frame is empty (just green) - i think that comes from the initialization of the webcam. the second frame is ok

so my idea is, to skip the first 10 frames, and then take a screenshot, to be sure the camera is initialized every time.

what parameter should i use to get this result?

Schinken

Posted 2012-03-17T19:35:15.177

Reputation: 111

Answers

It takes a while for some cams to initialize. Have it take 2 shots and discard the 1st (vary the time between until it's sufficiently long enough to get a good 2nd shot)

user123529

Posted 2012-03-17T19:35:15.177

Reputation: 1

yes, it sure comes from the initialization of the camera, as i mentioned before ;) Its possible to discard the first frame, yes, but i explicitly want to wait a second or 10 frames before i take the first screenshot – Schinken – 2012-03-18T17:52:38.793