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16 posts

Geek


Topic # 31611 24-Mar-2009 12:10
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I have an problem with Stuttering / Jerky live TV in vista media centre


 


I did some more testing last night:

Repeatable Issue:
VMC: With recorded TV I get show stopping jerky / stutter / loop if I FF or RW and then press play. – sound continues but picture freezes between 2-3 frames and loops.

Solution / workaround:“Restore down” if in full screen mode or if already in a small window “maximise” to full screen – the screen goes blank for a ½ sec then picture come right and all is good until I next FF or RW again.

Possible explanation:
HTPC to TV sync?

I have not yet tried going from HDMI to component – don’t really want to lose picture quality as I browse the web a lot on the HTPC and need the resolution.

64bit Vista, 40 inch LCD Sony TV with an ATI 4850 Vid card , Blackgold 3540 TV card.


Has anyone else see this issue with VMC - how have others overcome this issue?



Cheers,


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722 posts

Ultimate Geek


  Reply # 203630 26-Mar-2009 22:18
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Firstly, if you have a newer model Sony LCD, you should be able to set it up for 1:1 pixel mapping, depending on the model. I have a Samsung & it was no issue. What it means is you won't lose any resolution with text. So surfing the web won't be an issue. Some LCDs will only allow 1:1PM on one HDMI, so you may have to play around.

As for the other: I have never used Vista & it's been awhile since I used Media Centre. I would suggest we need to find out if the issue is being caused by too-higher CPU load, or if is could be codec-related. Does it happen with all TV? Or only FreeviewHD? Also, there have been a number of issues with ATI cards using FreeviewHD.

To determine if its the former, open Vista MC in window mode (if that is at all possible) & bring up task manager (alt+cntrl+del), although, I prefer an app from Sysinternals called Process Explorer: it's far more accurate, as it shows the CPU load of each process.

Once both are open, start playback to determine the CPU load. If it's reaching near 100% in spikes, then this is the cause of the stutter. If it's not, then there are other reasons. Try that first.




Silverstone LC14 HTPC Case/Intel E4600 CPU/GA-EP35-DS3 MOBO/Asus EN9500GT graphics/2GB RAM/total 2TB HDD space/HVR-2200 & 2X 150MCE tuner cards/LG GGC-H20L BD Drive/MCE2005/Mediaportal/TVServer 1.1.0Final/LG 55"3D LED-TV/Denon AVR-1803 receiver/X1 projector

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