Laurent Pinchart <laurent.pinchart <at> ideasonboard.com> writes:
> Thank you. The descriptors expose pan, tilt and zoom controls. That looks a > bit weird for an integrated webcam. Could you try to modify them and see if > they have any influence on the picture ? > Let's first check if the pan/tilt and zoom controls have any influence on the > image. Hello, it took me a while to find a way to set tilt/pan on a webcam, but finally I found luvcview offers that options :) Result: Image does not change at all. console output: ioctl querycontrol error: Invalid argument Set Pan up error ioctl querycontrol error: Invalid argument Set Pan down error Same output for tilt and gain. Setting brightnes, contrast, saturation, sharpness, gamma, exposure and white balance works > Do you get 15 fps in Windows in 1280x1024 ? The camera seems to capture a full > resolution image even when you select a lower resolution, and that might have > an influence on the frame rate. The Windows BisonCam application doesn't show fps, so I opened the cam with VLC Player and that reported 15 fps at 1280x1024 what might be correct as the video runs smooth. Other resolutions run at 30 fps on windows. > You can ignore the video transfers (isochronous), but I'll need all > control transfers from as early as possible until you start the video capture. > As the camera is integrated in the laptop the initialization sequence > performed at bootup won't be easy to capture, but with a little luck that > won't be needed. The cam is integrated, but can be dis-/enabled by pressing Fn+F10. So I did - one USB trace while 'hotplugging' the cam and - one trace when the cam already was connected and I started the BisonCam application; I snipped the isochronous traces camera hotplug trace: http://www.loaditup.de/files/511048.txt start camera application trace: http://www.loaditup.de/511049.html I hope that helps for further investigation, please reply if you need anything else... _______________________________________________ Linux-uvc-devel mailing list Linux-uvc-devel@lists.berlios.de https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
