On Mon, 16 Jun 2003, Gerd Knorr wrote: >> in calling IOCTL WITH VIDIOCSYNC- should it take a long time ? >> it takes more than half a second, (and the frame number parameter Sorry, I missed the beginning. What camera, what driver? Any reasonable USB camera should give at least 7.5 fps, which makes average maximum for VIDIOCSYNC 0.13 seconds. In general, VIDIOCSYNC should take about 1/f where f is framerate, or less if you wait a while between successive calls to it. >sync blocks until the hardware is done capturing the frame. half a Exactly. Now the question is, why it takes so long to capture the frame? Problem with the driver? Badly supported hardware?
