Hi Mark, On Saturday 29 December 2007, mslemko wrote: > Laurent Pinchart wrote: > > On Friday 28 December 2007, mslemko wrote: > >> Hi, > >> > >> I have a Logitech Quickcam Orbit AF and the video is working nicely at 5 > >> fps in all camera resolutions. > >> > >> However, I get errors from the luvcview application when trying to set > >> Pan or Tilt. > >> for example: > >> ioctl querycontrol error 22 > >> Set Tilt up error > > > > Pan and tilt don't work at resolutions higher than 640x480 (from the top > > of my head, it might be another resolution limit). That's a webcam > > limitation. > > Thanks for the idea. I tried this with 320x240 and 640x480, and pan/tilt > doesn't work at these resolutions either. Perhaps the camera has changed > recently. Is there any information that might help in tracking the > difference down?
Actually error 22 (EINVAL) means that an invalid parameter has been supplied. It shouldn't be related to the video resolution. My bad. Pan/tilt support is implemented as an extension unit in Logitech webcams. The driver now requires an external utility to configure extension units. Have a look at http://www.quickcamteam.net/software/libwebcam/ for instructions. Best regards, Laurent Pinchart _______________________________________________ Linux-uvc-devel mailing list Linux-uvc-devel@lists.berlios.de https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
