> I am trying get some idea of the delay between a real world event and the time > that the computer has access to data recording this event. I am using a > Phillips USB webcam. Due to this driver and using a USB camera I don't think > I have access to any timestamp data. Is this correct? Does anyone have any > other suggestions for getting an idea about the size of this delay. IMHO you can't say anything sensible about the delay :-( Close to no v4l(2) devices actually implement timestamps and delay over USB is totally impredictable, as is the delay caused by compression of the image, if that's the case (probably yes).
