Mark Duller wrote: > I wasn't able to get the webcam working this time (in previous versions > I got it working, though not reliably). I used the 'video' command but > it just gives 'video: could not find a usable encoding' even trying > various options. dmesg shows the following but uvideo0 doesn't actually > exist in /dev/, perhaps that is related to the issue. > > uvideo0 at uhub0 port 2 configuration 1 interface 0 "Apple Inc. > FaceTime HD Camera (Built-in)" rev 2.00/5.16 addr 6 > video0 at uvideo0 >
"video0 at uvideo0" means you access uvideo0 through /dev/video0. The video(1) tool uses the Xv(3) API to display the video stream. I noticed that the necessary support isn't always available, e.g., on my system: $ xvinfo X-Video Extension version 2.2 screen #0 no adaptors present $ video video: could not find a usable encoding I think the video tool failure could be related to the absence of a Xv capable graphics adapter. I don't know if this is a driver or a configuration issue.
