video_mode ignored

[ZdenekM]

Hi,

I just noticed, that parameter video_mode is completely ignored and uncompressed mode is always used (https://github.com/ktossell/libuvc_ros/blob/master/libuvc_camera/src/camera_driver.cpp#L315) which is unfortunatelly not supported for some devices. I can try to fix this but don't have much experience with this UVC stuff...