problem with deinterlacing Live-TV (HD) in Gotham
#1
I installed Gotham on my Windows 7 SP1 HTPC with dvbviewer PVR-Addon for Live-TV.
The newsticker in every news channel (HD 1080i) stutters, no matter what settings i use for deinterlace (Auto / Inactive / Active - DXVA bob / best) or the scaling options.
When i deactivate and activate the deinterlacer, I see a difference, so it works, but not as it should.
The Picture looks very bad in Live-TV overall. It's not really sharp and a little grainy.

Is there a Problem with Gotham's deinterlacer?


I'm using a Digital Devices Cine S2 with DVBViewer recording service as backend and a NVIDIA 550Ti.

After downgrading to 12.3 everything looks perfect again.
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#2
I've seen the same problem which started with gotham rc1 (gotham beta4 runs fine). As far as I know it only affects nvidia gpus.

Maybe there's a dev who can shed some light on it.
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#3
Do you see a difference between dxva and dxva-hd? this video is good for testing: http://samples.ffmpeg.org/MPEG2/interlaced/burosch2.mpg
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#4
Thanks for leading me in the right direction: There is no difference between DXVA and DXVA-HD, but when I disable DXVA2 everything works as expected. Has there been a change regarding this switch?
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#5
hmm, this is odd because deinterlacing is done in render stage by DXVA or DVXA-HD renderer. This is still active if you disable dxva2 decoder.
you disabled dxva2 decoder and set deinterlace method to dxva best?
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#6
With DXVA2 activated there's no difference between the deinterlacing methods (all look terrible), but turning off deinterlace shows that there is something happening with the picture. When I deactivate DXVA2 I see a difference in the picture when I change the deinterlacing method. Currently all my settings are set to 'auto', which gives me quite a good picture.
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#7
Similar problem here

When watching an interlaced 60fps video like this https://www.youtube.com/watch?v=R1JXHb-Qlv0

On Gotham 13.2 With DXVA2 enabled I get 30fps output with bad artifacting, I got a really nice 60fps picture in Frodo 12.3.

With DXVA2 disabled, the software deinterlacer does a good job producing a smooth 60fps image.

I also have an nvidia card
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#8
is this a bug?

I have an AMD GPU and Picture at 1080@25 stutters no matter what.

I could fix it when playing 24p content. However Live-TV remains a bitch. Watching a game of football (=soccer) is impossible this way.

I have Windows 8.1 running and I am completely lost.

Hope to here some responds.

btw.: Up until FRODO it never was an issue. Perfect and smooth as it should be.

Thank you
3000
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#9
DXVA is currently under construction and gets lots of fixes ....
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#10
ah, good to here it is already a known issue,

and I thought it might have something to do with the audio engine.

So no live tv till it's fixed. Sad
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#11
you can volunteer for testing nightlies next week Smile
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#12
sure, I am happy to help. It's really a major issue.

Should have high priority in the community.
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#13
Currently - there is no issue at all. Cause nobody has seen your Debug Log for now.
First decide what functions / features you expect from a system. Then decide for the hardware. Don't waste your money on crap.
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#14
yeah cause I am the ONLY one having the Problem.

you know what? DON'T fix it, who cares ...
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problem with deinterlacing Live-TV (HD) in Gotham0