Hi Julian, On Sunday 13 January 2008, Julian Oliver wrote: > hi list, > > while i'm very happy with the Quickcam Pro 9000 on the current (checked > out yesterday) uvcvideo driver, i'm a little disappointed with the frame > rate: luvcview never reports a higher rate than 15fps for this device, > regardless of capture size: 320x240 is as slow as 960x720. > > also, on the current version i can't seem to set the autoexposure to off > using the luvcvideo interface. previously i was using uvcdynctrl from > Logitech's own libwebcam, but now that reports an error: > > $./uvcdynctrl --clist > [libwebcam] Unable to refresh device list. (error 12: A Video4Linux2 API > call returned an unexpected error)
uvcdynctrl isn't needed to control auto-exposure. It shouldn't fail though. If you used an old version of the UVC driver, control identifiers might have changed. Recompiling luvcview might help. > is there a trick to improving the frame rate? furthermore, is anyone > else having trouble using luvcvideo or uvcdynctrl to manipulate camera > paramaters? > > where frame rate is concerned, it's perhaps worth mentioning that i'm > testing this on a Dual Core 2.4GHz laptop with 4GB of physical memory. > the machine hsa hardware graphics acceleration provided by an NVIDIA > Quadro FX 570M. Best regards, Laurent Pinchart _______________________________________________ Linux-uvc-devel mailing list [email protected] https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
