Its definitely IVTV (and not hardware) related as I've never experienced this problem under windows. For me, it always comes up during channel change though.
On 11/22/06, Rob Comstock <[EMAIL PROTECTED]> wrote: > > I have a older system with 2 cards, pvr-150 and a pvr-250. I have been > seeing this > effect every now and then and up until I read this post I figured one or > the other of > my cards is dying. Now I am not so sure. The flicker is exactly as > described and > as shown in the images. I was watching "Heros" last night and was > disappointed when > it showed up half way through the show. Is that important? The recording > was fine > for roughly 30 min and then went bad with no channel changes. > > My system is fedora core 2 based, a 2.6.9 kernel, the IVTV is 0.4.6. > > Ciao > > Rob > > > > Keith Fischer wrote: > I am seeing flickering as well since I started using kernel 2.6.18 and > ivtv-8.1. It is not quite the same as your pictures. I have > different sections of the video stream flicker. > > Keith > > On 11/16/06, Martin Dauskardt <[EMAIL PROTECTED]> wrote: > > > Hi Hans, > > there is still a problem since the early days of the ivtv driver: > Sometimes, immidiately after switching to a new (analogue) channel, the > picture begins to flicker. I analysed the stream and found out that in a GOP > of 12 pictures it is always the 4th and 10th picture which is faulty (see > pictures: > http://drseltsam.device.name/vdr/sample1.jpg > http://drseltsam.device.name/vdr/sample2.jpg ) > > In earlier ivtv-versions, it helped to switch the channel and go back. I > think it was starting with Rev 3349 when this didn`t help anymore. Since > this time I must stop the application and reload the ivtv-driver. > > A reliable fix for the vdr-plugin "pvrinput" to avoid the flickering is to > close and open the device before setting a new channel: > > close(video_fd); > char devName[64]; > sprintf(devName, "/dev/video%d", number); > video_fd = open(devName, O_RDWR); > > This makes channel switching 1-2 seconds slower, but the problem never > appeared again. Without this fix, I can reliably reproduce the problem. > Sometimes it takes a few dozen of channel switches, and sometimes it appars > after a few switches. > > Do you have any idea how the problem could be fixed in a better way in the > driver? > The strange thing is that some vdr users know the flickering problem very > well while others never had problems. I don?t believe that it is a problem > of the application, because it happens with two totally different coded > plugins (analogtv and pvrinput). > > Are there any similar reports from mythtv-users? > > Greets, > Martin > > > _______________________________________________ > ivtv-devel mailing list > [email protected] > http://ivtvdriver.org/mailman/listinfo/ivtv-devel > > > _______________________________________________ > ivtv-devel mailing list > [email protected] > http://ivtvdriver.org/mailman/listinfo/ivtv-devel > > > > > _______________________________________________ > ivtv-devel mailing list > [email protected] > http://ivtvdriver.org/mailman/listinfo/ivtv-devel > > _______________________________________________ ivtv-devel mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-devel
