On Fri, 5 Jan 2007, Hans Verkuil wrote: > On Thursday 04 January 2007 15:35, Ramon (IVTV) wrote: >> Hi all, >> >> Thanks very much for the fabulous work on this driver. >> >> I've a problem with YUV capture (via /dev/video32). >> On capture the top part of the frame is missing from >> every 18th frame. This top part is very dark and it contains >> some grey diagonal block pattern. >> >> This happens from the second time I open /dev/video32. >> Hence, in the past (ivtv 0.4.x) I used to reset the firmware >> (ivtvctl -H) before capturing. Yet, this work-around is not >> possible anymore with ivtv 0.8.x (the firmware-reset ioctl >> doesn't exist anymore?). > > Correct, that ioctl has been removed. > >> Unfortunately, I do not have the experience to dive into the >> code of the driver and find out what is happening... >> >> Can someone please help me (with a work-around)? > > It's a known issue (it's about the top third of the screen that's > flickering, right?). Unfortunately, I've a hard time reproducing it and > neither do I have a workaround for it. BTW, are you using NTSC or PAL?
I had the same problem a few days ago. I was trying to reduce the noise on my cable TV signal by adjusting the coax connector. Afterwards I noticed that the show that was being recorded at that time, started to show this flickering at the top of the screen. The flickering started at the same time that I was adjusting the connector (the signal clearly got distorted a few times), but the flickering continued for the rest of the recording. Perhaps the signal distortion somehow triggered the flickering problem. Unfortunately I've already deleted the recording. But I'll see if I can reproduce it. I'm using PAL. Cheers, Jochem _______________________________________________ ivtv-devel mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-devel
