Al McIntosh wrote: >>I missed the start of this thread, but how do you know that this problem >>is the cause of ivtv? >> >>Even if you have analog cable, your upstream provider is going to be using >>digital. They could be having random problems with their incoming >>single, which then gets sent to you via analog as a bad field. >> >> >> >> >> > >The issue only appears when encoding at a resolution other than 720x480. >If I encode at 720x480 everything is fine. >If I encode at 704x480, 640x480, 480x480 I see these odd frames >consistently. > > >
I should also mention the issue suddenly appeared when I upgraded to ivtv 4.0. > > >>As well, if you have a dish / digital set top box with cable, it could be >>causing this bad field.... >> >> >> >> >> > >Would this bad field only be apparent at resolutions other than 720x480? > > > > >>Just wondering if any work has been done to eliminate source signal as the >>cause of this bad image? >> >> >> >> >> >> > >I have used the same satalite receiver but used different inputs. Right >now I am using S-Video. > > > > >>On Mon, 16 Jan 2006 11:36:50 -0500 >>Al McIntosh <[EMAIL PROTECTED]> wrote: >> >> >> >> >> >>>Bryan Mayland wrote: >>> >>> >>> >>> >>> >>>>Bryan Mayland wrote: >>>> >>>> >>>> >>>> >>>> >>>> >>>>>Keith C wrote: >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>>>Wow, I finally was able to play back your clip (VLC didn't seem to do >>>>>> >>>>>> >>>>>>it and Safari on Mac mangled the file, but mplayer from a firefox >>>>>>download worked). Thats a very strange flash. I got a screen grab >>>>>>of it. Its a partially shifted (or interlaced) frame that only >>>>>>occurs for a single frame. This needs someone from the dev list to >>>>>>look at it, so I'm cross posting it to that list. >>>>>> >>>>>>Here's the screen grab (its a tiff, and its 776 Kb) : >>>>>>http://allesys.com/images/flash.tiff >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>> Thanks for the tiff, I couldn't play the file either. >>>>>Zot! I've got the same issue on a PVR-250, one frame every so often >>>>>(anywhere between 10secs and a couple minutes) has as the bottom of >>>>>its frame shifted horizontally off *just* like that. I just assumed >>>>>my card was crapping out, since my PVR-150 didn't do it. Now I'm >>>>>going to have to investigate. Running Kubuntu 5.10 and ivtv >>>>>branches/0.4 and lirc-0.7.2. >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>It looks like 0.3.8 works for me too. I went to r2668 which worked, >>>>and then I tried r2700, r2750, r2766, and then r2781. All those >>>>worked, which didn't make much sense. So I shut down and pulled the >>>>power cord and let the machine sit a few minutes and tried again. >>>> >>>>Now r2781 showed the error again. Rolled back to r2754, no error. >>>>Forward again to r2781, no error. Shutdown, wait, reboot with r2781, >>>>got errors again. >>>> >>>>This time I rolled back to r2766, no error again. Forward to r2781, >>>>still no error. Shutdown again! Error came back when the machine came >>>> >>>>back up (r2781). >>>> >>>>Now it was getting late so I decided to make sure my unload/reload >>>>process wasn't the thing fixing the frame errors. Cold booted with >>>>r2781, and haven't seen an error in 10 minutes :/ I wish it was more >>>>consistent about failing. I'll try more tomorrow. >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>Bryan, >>> When you switched between revisions did you change firmware also? >>>What firmware version did you use as you cycled through ivtv revisions? >>> >>> >>> >>> >>>I ran mplayer -vo jpeg so it would output each frame to a single jpg. >>> >>>Frame 44 is fine, 45 is mangled, frame 46 is fine. >>> >>>http://allanmcintosh.com/pics/tmp/00000044.jpg >>>http://allanmcintosh.com/pics/tmp/00000045.jpg >>> >>>Then several hudred frames later I'll see 1 bad frame again. >>> >>>The recording these frames are harvested from was created with 0.4.2 >>>rev 3119 >>>at 640x480. >>> >>> >>> >>> >>> >>> >>> > > >_______________________________________________ >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
