On 5/21/06, Brian Weaver <[EMAIL PROTECTED]> wrote: > > > I'm having trouble getting good recordings from either of my PVR150 > > cards. I'm running KnoppMyth R5B7 (2.6.15-chw-2 kernel) and IVTV > > 0.4.4. I don't see any obvious errors (though I am a Linux noob) and > > the cards seem to work fine in that they do record and I can change > > channels and all that jazz. > > > I see blocky artifacts appear frequently--ever few seconds, sometimes > > nearly constant. Normally, I use the tuner input, though I've tried > > this with the composite input. I've tried changing the bitrate and > > using a lower one certainly makes it happen less, but doesn't > > eliminate the problem. Even a 1Mb bitrate--which results in an > > unwatchable picture--still shows this blocky behavior, though not as > > severely as with an 8Mb bitrate. I've taken a few screenshots, if it > > helps: > > http://www.danandsherree.com/miscfiles/1.png > > http://www.danandsherree.com/miscfiles/2.png > > > Additionally, I see frames jumping out of order. A frame from perhaps > > 1 second in the future of the show will appear as I'm watching, if > > that makes sense. > > I bought a PVR-150 (MCE) within the past few months for my first > mythtv system and experienced this exact same issue, although in my > case it was an intermittent problem. I'm using S-Video input from a > DirecTV satellite receiver. At first, I thought it was the satellite > signal since we had some severe thunderstorms at the time, until I > hooked the receiver directly to a TV and it was perfect quality. > > In my case, it turned out we had a slight power brownout which wasn't > enough to reboot the mythtv server, but caused the PVR-150's MPEG > encoder to go haywire. Commercial flagging on those corrupted files > would even fail. Shutting down the computer for 30 seconds and > rebooting it fixed the problem every time it occurred for me. > > I would suggest putting your computer on some sort of power > conditioner (but don't exceed the conditioners maximum load, as I did, > which made things worse for me) and look for a high quality power > supply. > > I'd also check to see that you're using the latest ivtv drivers and > firmware from hauppage's website just in case.
I have to admit, I'm very surprised to say this: unplugging the power worked. I've seen this problem basically since I started with MythTV about two months ago. During that time I've unplugged the machine to move it from the home office to the living room and a few other times for some quick changes, like changing CPU fans. I couldn't say how long it had been unplugged for, but certainly longer than 30 seconds; probably a few minutes. Anyway, I unplugged the machine the other night before bed, then plugged it back in when I got up. Watching live TV through Myth went wonderfully, with no blockiness artificating! Still working great, too. Dan -- [EMAIL PROTECTED] http://www.danandsherree.com _______________________________________________ ivtv-users mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-users
