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#59432 6-Apr-2010 09:45
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When I first built this media centre I was very enthusiastic about the Windows7 beta & release candidates, and I ran the input from standard Sky decoder on s-video and the output through an nvidia GS-8400 s-video output because I was using a legacy standard definition CRT television. I've since bought a genuine copy of Windows7 64-bit, fresh install.

To be honest, when I compared the picture quality through the media centre with direct composite output from the Sky decoder, the colour was a bit smeared and I could see individual picture frames on fast action (while the Sky output was smooth).

In the weekend I bought a new LG monitor with HDMI, DVI and VGA inputs, native 1900 x 1080. When I tested the HDMI interface on Freeview terrestrial channels 1, 2 and 3, the picture frames stuttered to the point of being unwatchable. My expectation was that I would finally be watching Freeview in High Definition. The task manager didn't show excessive processor, probably 30-40% over the 2 cores. 

What kind of picture quality are you seeing from your media centre, compared to the results from dedicated boxes such as MySkyHDi, Freeview boxes and DVD/Bluray players? Particularly across HDMI.

My expectation was high, I was thinking the media centre should be able to do every function a dedicated box could do and more, but this HDMI picture quality has hugely disappointed me.


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BDFL - Memuneh
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  #315265 6-Apr-2010 11:23
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I get very good quality HD picture over HDMI out of my Dell Zino HD (with ATI Mobility Radeon card and HDHomeRun DVB-T)...

Are you using the latest NVIDIA drivers? You haven't installed any third party H.264 codecs by any chance (you shouldn't need any).



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  #315291 6-Apr-2010 12:54
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Do you get the same issue on any of the non-HD channels? ie. anything other than 1, 2, 3 or the Freeview Demo channel?

It could be that the onboard video is struggling to cope.


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  #315301 6-Apr-2010 13:18
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Does sound like something is wrong with the setup. ie is using the wrong codec.

A 8400GS should play Freeview HD fine using the Windows 7 built in codecs.

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

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  #315319 6-Apr-2010 13:50
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as a reference, I have an 8400GS + Celeron E1200 and FreeviewHD under Win7 HP x64 is smooth with <10% processor usage.

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