Hi all,

My 7MC system has been working fine since Nov 2009. But within the last few weeks I get occasional stutter/jitter/large square pixels when watching live TV or recorded TV. This appears to be happening randomly. I tried to run defrag on the disk, but that did not improve the situation. Its like the 7MC has difficulties with decoding the h.264 signal or reading fast enough from the hard-drive. It's not the whole picture that get stutter. Sometimes it's like a horizontal line when large square blocks (like size of a thumb) in the middle of the picture that lags behind.

I will try to experiment some more to see if it's the recording or the playback that is the issue. It could of course also be a signal problem.

I'm using a mobo with intel graphics 945gm and win7 intel graphics driver from 2-Oct-2009.

Is anyone else seeing the same problem?

Played around some more with this. It's the recording / live tv (not playback) that is the problem as I got same pixel errors playing the recorded TV file on another PC.

I took some screendumps see below.

I then when to 7MC > Task > Settings and did a re-scan of all TV channels. This appears to have solved the issue. Weird, but at least now it's solved.

- Chr

Pixels

 

Ok picture

 

I have been getting the same things lately for the past couple months. I only get it on my analog input through my AverMedia hybrid something or other, I think the model number is M039 or something. I don't have a problem playing back ATSC HD video, only SD analog coming from my Sat box through RCA cables. Its weird, and has been acting up lately. I am glad rescanning all your TV channels worked, but I can't do that since I am technically using a "line in" for my satellite, nothing to rescan. Any ideas?

Well turns out I was too fast. The problem is back. Random short breaks in recorded/live TV with the same large pixels. Only option I can think of now is to revert back 1 month or so using a backup on my WHS and see if this helps. And if it does solve the problem then check to see if this relates to a windows update in recent times.

Just wondering--did you find out what caused this problem and how to correct it?

I'm still not sure what caused the problem, but I had installed coreavc codec on the machine and when I un-installed the coreavc codec the problem disappeared. I also installed a PerfectDisk and set it up for automatic defragmentation. Even thought Win7 reported the drives 0% fragmented PerfectDisk found a lot of fragmentation.

I can not understand why coreavc could cause a problem as the problem was with the recorded files which I assume is a encoding issue. Coreavc should only be used as a decoding codec.

Anyways turned out that I don't really need coreavc at all so better to leave it off the system.