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NextPVR Forums Public Add-ons (3rd party plugins, utilities and skins) Old Stuff (Legacy) GB-PVR Support (legacy) v
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Deinterlacing 1080i

 
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Deinterlacing 1080i
velinn
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#1
2009-11-11, 05:37 AM (This post was last modified: 2009-11-11, 06:40 AM by velinn.)
Hello everyone, fist post. I've done a bit of searching but I can't seem to find anything that works for me. My problem is, as the title says, when watching OTA HD at 1080i the picture is blurry and just looks like garbage. I've begun to dread shows broadcast in 1080 rather than love the higher resolution. 720p is, as to be expected, very fluid and nice to watch.

I've tried everything I've read. ffdshow deinterlacing, DScaler deinterlacing, Alparysoft deinterlacing, I've messed with the deinterlacing options under Misc, I even went so far as to acquire nVidia's PureVideo decoder and the deinterlacing does next to nothing. I've tried setting ffdshow to only use NV12 and set the Bob deinterlace flag. Nothing works. I'm really getting disheartened with the entire process.

This is what does work:
Pausing live tv so that it starts a pause buffer, then opening the buffer in VLC and selecting the Linear deinterlace option. Doing that makes 1080i fluid and beautiful. Obviously this is a less than optimal solution. I suppose my issue is that if VLC can do it on-the-fly while playing a pause buffer why can't any of the many things I've tried above do it seamlessly from within GB-PVR?

I'm sure there must be something I'm missing. Some setting some where. Any help with this issue would be wonderful. Thanks for taking the time to read this.


EDIT:
Figures as soon as I make a post I get it working. Some how my codecs were totally screwed up. Honestly I'm not entirely sure how I got things working properly, but PureVideo is now showing DirectX VA mode C (idct) and Video mixing (DirectX 9). It didn't do this before. I think ffdshow was getting in the way.

So, hardware deinterlacing is working and the image looks good. Now the problem is that it jerks in full screen. Not horribly but just enough to be noticable and annoying. I guess now I troubleshoot why DXVA is so jerky.
BigMoose
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#2
2009-11-11, 08:42 AM
What's your video card, CPU, memory, motherboard etc? 1080i takes a fair amount of effort. Is it H264 or mpeg2?
hoborg
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#3
2009-11-11, 10:10 AM
SAF have solution for this if you will use *unlocked* version (H264 and mpeg2). If you have DXVA compatible GPU, DXVA is used and deinterlacing is done by GPU hardware.
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stustunz
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#4
2009-11-11, 06:45 PM
hoborg you keep saying use SAF *unlocked*
whats the difference?
where do i download the *unlocked* version
hoborg
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#5
2009-11-11, 07:43 PM
stustunz Wrote:hoborg you keep saying use SAF *unlocked*
whats the difference?
where do i download the *unlocked* version

Check your PM
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rookie
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#6
2009-11-12, 01:41 AM
hoborg Wrote:Check your PM

I'd like to know how to unlock too. Thanks in advance.
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velinn
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#7
2009-11-12, 07:05 AM (This post was last modified: 2009-11-12, 07:20 AM by velinn.)
BigMoose Wrote:What's your video card, CPU, memory, motherboard etc? 1080i takes a fair amount of effort. Is it H264 or mpeg2?

GFX260, Intel quad, 4gb, etc. It really isn't a machine problem.

So I've given up on PureVideo because I can't get rid of the jerkiness. Any time there is any sort of moderately fast motion it becomes unwatchable. I just tried using Avisynth + Yadif but I'm not getting results that are as good as PureVideo was (minus the skipping of course).

I'm downloading SAF now. I'll give that a whirl.
hoborg
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#8
2009-11-12, 07:19 AM
velinn Wrote:Edit:
On trying to install SAF I get the error: LoadLibrary("proppage.dll") failed - The specified module could not be found.

What is this, and how do I get it?

Use *unlocked* SAF, check PM
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Reddwarf
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#9
2009-11-12, 09:25 AM
Is it just me, or is this forum becoming more and more a forum for SAF-advertising? I'm sure it was not ment to be....

"I'd rather have a bottle in front of me than a frontal lobotomy"
TonyXL
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#10
2009-11-12, 10:17 PM
Velinn,

Do you use Windows XP?

I do and I was having the same problem with 1080i. Jerkiness. 720p was fine. Tried 2 different video cards and many codecs, including SAF. DXVA on/off, no difference. CPU was at 30% regardless.

I discovered the problem was with the VMR9 renderer. Using Overlay and DXVA on fixed the problem. The CPU usage went down as well.

Unfortunately the OSD looks terrible using Overlay. I'm going to install Windows 7 on another hard drive to see if I get better results with EVR.

-Tony
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