I have noticed with some frequency that upon reboot, after I `cat /dev/video0 > /tmp/tmp.mpg` for 1 sec, the video capture is often a blank screen but he audio is fine.
The following will often restore video: 1. cat /dev/video0 > /tmp/tmp.mpg 2. mplayer -cache /dev/video0 (blank video) 3. mythtv live tv (blank video) 4. unload ivtv module 5. unload cx18 module 6. load cx18 module 7. cat /dev/video0 > /tmp/tmp.mpg 8. mplayer -cache /dev/video0 (video/audio is fine)
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