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scaramanga

7 posts

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#45603 3-Nov-2009 12:48
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I'm a complete newbie and I could do with a little help - My current setup is:

Gigabyte MA770T-UDP3 motherboard
Phenom II X2 550 Processor
2GB DDR3 RAM
Hauppauge Nova T500 HD
8400GT Graphics
Windows XP Professional
GB PVR
Bog-standard DSE freeview ariel with clear view of Mt Fitzherbert transmitter
Panasonic 42" HD-Ready Plasma TV

I have near-perfect reception of TV1 and TV2, 3 is watchable but is a bit jittery. Prime is very jittery and will hang occasionally.

Can anyone suggest any steps to troubleshoot this poor performance?

Thanks in advance

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wellygary
4999 posts

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  #269588 3-Nov-2009 13:15
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What is happening on 3+1 and 4, these share the same MUX as 3,

Also Prime is on the same MUX as MTS and parliament et al, what is reception on those channels like

scaramanga

7 posts

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  #269589 3-Nov-2009 13:19
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This might be a stupid question but..
If the transmitter in Fitzherbert is vertical, does that mean I have to rotate my aerial through 90' to pick up the best reception?

 
 
 
 


scaramanga

7 posts

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  #269590 3-Nov-2009 13:21
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I'll have a look when I get back from work but from memory 3+1 is about the same as 3. Thanks.

wongtop
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  #269594 3-Nov-2009 13:33
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I also have breakups on the Korida and Mediaworks muxs from Fitzherbert.  I use a Homecast DTR.  The antenna isn't the best and will be getting someone to check it out.  I am in Maupuia.

Vertical polarisation means that the antenna elements have to be vertical for the best reception.

davidcole
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  #269642 3-Nov-2009 15:01
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Hmmm I thought the minimum video card for Freeview was an 8500gt, not an 8400gt.

And yes could be signal related.




Previously known as psycik

OpenHAB: Gigabyte AMD A8 BrixOpenHAB with Aeotech ZWave Controller, Raspberry PI, Wemos D1 Mini, Zwave, Xiaomi Humidity and Temperature sensors and Bluetooth LE Sensors
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Windows 10
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scaramanga

7 posts

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  #269698 3-Nov-2009 17:41
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Sorry, my mistake - I have an 8500GT.

TV3 is patchy but C4, which I believe is on the same MUX, is quiet OK.


sbiddle
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  #269700 3-Nov-2009 17:48
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What H.264 codec are you using? What is CPU % while watching TV3?

If you're using PowerDVD8 on some installs the H/A won't take effect until you make a registry change as it doesn't recognise the PVRX2 executable and only creates registry settings for the config application. This means H/A won't work even if enabled.


 
 
 
 


scaramanga

7 posts

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  #269711 3-Nov-2009 18:22
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I'm running at between 25 and 35% of CPU, maybe a little less on TV1 and TV2, maybe more on TV3.

I don't know which H.264 decoder I'm using, the GB-PVR config page (Playback - Advanced Codec - H.264 Decoder) says I'm using the system default. (Alternative options are Cyberlink H.264/AVC Decode (PCM45), Arcsoft Video Decoder and PCM H.264/AVC Decoder)

When I try the various options there's no improvement and the final 2 decoders are brutal.

phatbloke
91 posts

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  #269730 3-Nov-2009 19:45
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I'm in Chch an getting some stutters on TV3 and TV3+1 tonight. All others are sweet and never had a problem in well over a year my MP box has been running plus I havent changed any of my setup. Guessing its only the weather or some other problem unrelated to my setup.

sbiddle
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  #269784 3-Nov-2009 21:36
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Most people have used the H.264 decoder that comes as part of PowerDVD8.

You have obviously got a H.264 codec installed on your machine from other software (possibly the old WinTV?) but it's certainly not using the H.264 hardware acceleration if it's using 25% or more decoding TV.


scaramanga

7 posts

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  #269789 3-Nov-2009 21:46
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Old WinTV - Correct. Any idea how I get out of this mess?

kiwijunglist
2890 posts

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  #269906 4-Nov-2009 09:48
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Try HD PACK 2.2, it contains PDVD and arcsoft codec for hardware acceleration.
8500GT is borderline for 1080i in mediaportal, maybe in GBPVR it's ok tho.




HTPC / Home automation (home assistant) enthusiast.


scaramanga

7 posts

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  #270319 5-Nov-2009 13:06
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I've tried the HD Pack with no increase in performance. I'll upgrade my graphics card to a 9400 or a 4835 and see what happens.

Thanks to all for your help.

kiwijunglist
2890 posts

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  #270321 5-Nov-2009 13:16
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Maybe 8500GT is the problem, but it's possible upgrading wont fix your problem if it's caused by something else. When i did research for ATI card for HTPC (non gaming, low noise/power useage) a couple of months ago, it seemed HD4670 was the best choice.




HTPC / Home automation (home assistant) enthusiast.


sbiddle
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  #270420 5-Nov-2009 17:48
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8500GT works fine with GB-PVR, it's what I use.

The issue is more than likely what I explained above, the codec you are using is not actually taking advantage of the HW acceleration.

Make sure you select the Cyberlink H.264 codec in GB-PVR and follow the steps here to ensure the registry has hardware acceleration enabled for the PVRX2 application.

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