Justin Schoeman wrote: > > I cannot change the video input with > > > > ... > > err = ioctl (pcapt_d->fd_video, VIDIOC_S_INPUT, &input); > > ... > > What is the return value of this ioctl? It is 0. No errors! > Also, make sure capture is not active when you issue this ioctl, otherwise > channel change may be defferred until capture is stopped. Good hint, but I always close the video device before I change settings. I use the sample code from http://www.thedirks.org/v4l2/. Therefore I think, I do everything right. I tested some more things: With the card type 0, I only can use the plug 3 (available: 0-3) With type 1, I only can use plug 2. Changing the port with 'ioctl' has no effect! What are the differences between the different cards with respect to switching the input ports? Thanx for help Michael Kellner
