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vinneh

21 posts

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#48547 15-Nov-2009 22:58
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not sure if this should be in htpc or here, but after about 20 mins of watching tv i start getting occasional blocky distortion.

It looks like signal dropout or something, everything gets big squares of repeating images of previous frames, and occasionally a whole screen of a previous frame with squares thru it.

interestingly , when you watch something that has like the "24" style multi scenes in seperate boxes, it only distorts inside the boxes, not in the black area, or on the subtitles or the tv logo.

its almost as if its a decoding error rather than a reception issue.

also, i have ran signalmon alongside it and set it to update very fast, and i cannot see even the slightest change in signal quality when it does this.

anyone else had this sort of issue ?


i have win7 64 so im not discounting anything. it could be signal mon not reporting a drop out, it could be a service interrupting the decoding momentarily etc, Just wondeirng if someone has had issue and could point me in the right direction :D

thanks :)



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digidave
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  #273490 16-Nov-2009 13:13
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Hi Vinny,

I think I have the same issue you are talking about. It's Kinda hard to describe, but i do get an old frame (maybe 5 secs or so old) pop up quite frequently when watching TV. It can be whole frame or large blocks of a frame. It will stay on screen for a sec or with parts of the old frame moving with reference to live picture. It doesn't happen all the time, but when it starts it reoccurs every 30 secs or so.

I assume you are using Media Centre within win7 64.  I have had it since i moved from MediaPortal onto win7 32 RC1, but i am still getting it on Win7 64 Relese

Unfortunately i don't have a solution yet and it is driving me mad with Media Centre. I need to try swapping the codecs, but have been reluctant as i was keen to make use of MS ones, but there may be no choice

As i had a perfect picture wth MP before moving to Media Centre, i don't think it is signal related and also think it is a codec/rendering issue, but as it has not been widely reported, i think my hardware setup may have a part to play also.

I too use Hauppauge TV cards part of same Hybrid range as yours, the HVR-1300, but keen to know your other hardware as a comparison to see if there are any similarities

Gigabyte GA-M56S-S3 Motherboard
4GB RAM
ATI 4550
HVR-1300 x2
TT-1401 DVB-S

I will try to get some more testing done soon and let you know what i find out

gbwelly
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  #273514 16-Nov-2009 14:18
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Sounds like the ATI problem.
http://forums.amd.com/game/messageview.cfm?catid=260&threadid=117619&enterthread=y








 
 
 
 


digidave
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  #273578 16-Nov-2009 16:53
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Thanks Gbwelly,

That link (and the ones back to GZ) explain my problem and a few things to
try out although it doesn't sound good.

Time to go and buy an Nvidia i think.

cheers


gbwelly
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  #273582 16-Nov-2009 17:03
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Yeah, I'm pretty bitter about this one. Retired 2 out of my 3 ATI cards and bought a Nvidia 9500GT. All my Windows 7 problems gone. Between the green screen problems, the S3 resume problems, and this mutant corruption problem I got to the end of my tether.







vinneh

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  #273665 16-Nov-2009 21:26
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yes digidave your discription of symtoms matches my experience. however, i have an nvidia card...

also the problem happens in wintv, mediaportal, AND mediacenter.

and yes, im using media center on windows7 64 bit.

my hardware is a little on the cheap side, it was a quick upgrade from my old agp setup.

anyway:

nvidia geforce 9500gt with 1 gig ddr3 ram
2 gigs system ram
1terabyte samsung 7200 drive with 32 megs cache
asus m2n68-am
amd athlon x2 7750  (its basicly a phenom with 2 cores disabled)
a generic pci firewire adapter (i cant remember what brand, but its nothing special it just makes a firewire port available)
soundcard is firewire connected edirol fa-101 10 channel interface.

once again this symptom is apparent with every peice of software i have to view tv.
the network connection is via the onboard ethernet port, i have a mapped network drive to an apple machine i have running a samba server, and synergy client to the server on my mac laptop.







Nety
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  #273711 17-Nov-2009 06:20
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I had these symptoms and for me at least it was the signal. I finished up replacing the aerial we had which was very old and also installing a amp as the feed gets split 4 ways. I had already replaced the cabling previously. Problem solved.
So it sounds like it could be the card (if ATI) or signal or maybe a bit of both.







Media centre PC - Case Silverstone LC16M with 2 X 80mm AcoustiFan DustPROOF, MOBO Gigabyte MA785GT-UD3H, CPU AMD X2 240 under volted, RAM 4 Gig DDR3 1033, HDD 120Gig System/512Gig data, Tuners 2 X Hauppauge HVR-3000, 1 X HVR-2200, Video Palit GT 220, Sound Realtek 886A HD (onboard), Optical LiteOn DH-401S Blue-ray using TotalMedia Theatre Power Corsair VX Series, 450W ATX PSU OS Windows 7 x64

digidave
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  #273771 17-Nov-2009 10:46
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Sounds like we have different issues with similar symptoms.

For me it sounds like i have the issue gbwelly mentions from the ATI forums
where the location of the corruption changes on replay, so it can't be signal.

Vinny - As a test, when you get the glitch, if you rewind, does it happen in the
same place everytime ?

 
 
 
 


gbwelly
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  #273780 17-Nov-2009 10:58
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sorry replied to wrong thread.








vinneh

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  #273868 17-Nov-2009 14:03
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digidave:
Sounds like we have different issues with similar symptoms.

For me it sounds like i have the issue gbwelly mentions from the ATI forums
where the location of the corruption changes on replay, so it can't be signal.

Vinny - As a test, when you get the glitch, if you rewind, does it happen in the
same place everytime ?



good point, ill have a look.. i assume if it does then its poor signal?

digidave
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  #273935 17-Nov-2009 16:23
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I would say it is likely a signal issue if the glitch reoccurs in the same place everytime.

vinneh

21 posts

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  #273980 17-Nov-2009 18:22
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yes it occurs at same time. it records the glitch.

so ill try moving my antenna. its a brand new antenna and a brand new cable going straight to my tv card. so theres no loss etc. ill try having a play round with teh antenna again. dammit i thought id got over that hurdle.

vinneh

21 posts

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#274360 18-Nov-2009 23:21
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so i moved my antenna a bit, and it doesnt do it as much now. but, interestingly, when it gliltches, i can play it back, and the glitch is gone.... so now im completely confused hahah...

digidave
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  #274745 20-Nov-2009 14:28
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Not sure either. My glitches were pretty frequent as per the reports on AMD forum and it was an ATI issue.

However i have now replaced the ATI for an Nvidia GT220 and it is better, but I
still get the occasional glitch that does not show on Replay either but can probably live with it.
It is not as severe as before

Pretty sure media center is playing a part with this glitch as i never had any problems with old
setup of Vista and Media Portal.

Only thing I can suggest is to test out your picture using another app to see if it still glitches.
I will try the same as a test when i get a chance.

cheers

vinneh

21 posts

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  #275175 22-Nov-2009 14:03
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it does it nomatter what software i use.

but it definitely seems random. i.e it will do it, then i skip back 15 seconds, and play the same scene again and its got no corruption. seems to get worse after ive been watching tv for a while.



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