Kopete doesn't crash anymore while accessing an UVC Video Device (tested with a Logitech Quickcam Pro 5000 - 2006 model. WFM. YMMV). The image is gray with some blue, red and magenta lines. I know what's the cause (image controls not implemented in V4L2, WIP, needs a new class and a way to put arbitrary controls on a widget).

V4L2 is enabled again (for some reason outside of my knowledge it was disabled).Partial implementation of YUYV and UYVY formats.