I have a Lenovo x220 Tablet laptop with a built-in webcam, which is shown by
lsusb as a
Chicony Electronics Co., Ltd device (device id 04f2:b217). The
uvcvideo kernel module is used as a driver for it.
The webcam is working out-of-the-box under Ubuntu 12.04 (very nice!), but the video is upside-down (for example in Empathy and when I open
/dev/video0 with vlc).
So how can I rotate the webcam video by 180° degrees? I would prefer an application-independent solution, because for example Empathy seems to have no settings for this.