New HTPC from OcUK, Help with smooth video playback...

BoroRob_UK

BoroRob_UK

BoroRob_UK

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Joined
16 Nov 2009
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278
Location
Middlesbrough, UK
Hi Guys,

I've just bought a 'Verso Delphi' HTPC from OcUK. (GA-H55N-USB3) HDMI OUT

On some blu-rays im getting a jitter.. (The movie will pause slightly and the sound will become electronic like in high detail scenes.)

I think its because the HDMI cable cant handle both the audio and blu-ray.. Im trying to play it downstairs on my 42" TV through a straight HDMI connection for both audio and video but as I say the above is happening.

However, if i bring it back upstairs and plug it into my normal monitor using normal VGA lead. The movie plays with no jitter, But obv not in true high definition as VGA cant support true 1080p can it ?!

Which is what leads me to think that the problem lies with the HD cable not being able to handle both the audio and video? Its a good quality cable from richer sounds, cost £30.

Or perhaps its a signal issue? I think the refresh is set to 60hz in windows? Not sure..


Anyone had any experience with this issue?

Rob. :)
 
The only difference that the price makes is how long the cable will last, it must be the GPU or something to do with the way the sound goes through the GPU.
 
Can you tell us what media player you are using?

Some media players like XBMC and a few others, have a facility to offload the work done to encode and decode HD content to the Graphic component of the system. Normally this is done by the CPU and it is very intensive. Now even if you are using the on board graphics of a i3 CPU you will still need to tell the application that the GPU side needs to do the work. With XBMC you enable the feature. Once that is done then I suspect your problems will no longer be present.
 
Right ive figured out what is causing it. Its the wireless card. I fitted an Asus PCI-E 300Mbps low profile wifi card into it. If i disable it in device manager the jitter stops..

Thing is its more than a jitter im getting from the wifi card.. Even when im on the desktop and I drag my mouse accross the screen you can see the cursor stopping and then catching back up.. Like the wifi card is shorting the board or something.. U can see the actual cursor stop and then catch back up in a continuous drag accross the screen ? Doesnt happen when i disable the wifi card.. Any ideas what would be causing it to do this? Is 350w enough power ??

EDIT
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And only seems to happen over HDMI.. Dont seem to get a problem over VGA..
 
Im not sure its the card as all seems fine when using VGA.. Just when using HDMI the wifi card seems to interfere.. ?! :(

EDIT
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Is 350w enough? Maybe cos its using more power when HDMI'd to a 42" TV instead of VGA ?
 
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not seen this issue before

have you had any issues with the signal/performance of the wifi

did your system come with wifi as standard?

we have a customer support forum if you want to post your details in there and I will see what I can do to help :)
 
I can only assume that sunderland was referring to Acrosofts product called TMT3 V120 - never used it myself. I now exclusively use XBMC for all my Blu-Ray and other HD content.

Seriously if it is the wifi card I would replace it. Sometimes there is a conflict. Or, it could be something as stupid as frequency harmonics of the card causing your HDMI output to corrupt. But I really have no clear solution besides the 'replace the card' thing :)
 
Well Im not sure if the problem has gone away but since disabling it in device manager and re-enabling the jitter seems to have stopped.

How do I check to see if they are sharing an IRQ? And change it if they are?

-------
Rjkoneill,

I did order a wifi card to go with it but it came seperate and it didnt fit. Doh! So i ordered another one from somewhere else. Theres only one PCI-E low profile N wifi card on the market from Asus.
Im not sure what sort of speeds I should be getting to and from Win7 but.. Its a N router and the HTPC says its connected at 150Mb/s.. Transfering a file from upstairs to the HTPC downstairs i get about 4Mb/s..

I max out my download speed when downloading on the HTPC tho.. I get 5.98Mb/s download. Which is what i always get from Virgin. Just transfering files seems a bit slow.. 4Mb/s ?
 
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Right, I've just tried downloading again and im getting about 3Mb/s download in newsleecher. I was getting my full 5.98Mb/s yesterday.. If I check the signal strength it seems to be dropping from 81Mbps to 54Mbps.. When it was connected at 150Mb/s ok yesterday..

I do have some floorstanding speakers close(ish) to the box and ive tried shuffling them around to see if it made a difference. Do you think the speakers next to it maybe a factor? Or not?

Think im just going to RMA the card?


Rob
 
Right, When im connected to the wireless network and its idle.. It says its connected at 135Mbps..

As soon as I start downloading it says its connected at 54Mbps..

Im maxing out at 3.8Mb/s in newsleecher..


This is starting to annoy me.. :(
 
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