On Friday 18 April 2008, Colenbrander, Roderick wrote: > As I mentioned my platform is limited to USB 1.1. I'm now using a Logitech > Quickcam Pro 9000 and like most webcams it offers less functionality in USB > 1.1 mode. It only offers 160x120 in YUV mode and upto 800x600 in MJPG mode. > The image quality appears to scale with the max requested framerate. > 800x600 @ 5fps produces reasonable images but if possible I like to get > better image quality. Increasing the fps reduces image quality as more > compression is used to squeeze all the data over the bus. > > If I would use still image the timing / buffering constraints would get > relaxed, would I able to reach a higher resolution that way?
No with that camera. The Logitech Quickcams use a very straightforward approach to still image capture. Nothing is implemented in the camera, and the host driver takes a picture from the video stream to serve it as a still image. This will unfortunately not lead to relaxed timing/buffering constraints. Best regards, Laurent Pinchart _______________________________________________ Linux-uvc-devel mailing list [email protected] https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
