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Hey, I just ran into my first problem. I have deinterlace video=auto, method=dxva best, and video scaling=lanczos3 saved. However, when I play 1080i video I get stuttering and only about 30 fps. I have to change scaling to DXVA and then it returns to the normal 60 fps. I'm not sure why this is happening. Since it is 1080i, all that's happening is deinterlacing, there should be no scaling to a 1080p output should there? If there's no solution, is there any way via advanced setting or other to tell XBMC to use DXVA video scaling only for 1080i, so I don't have to change settings every time I play a 1080i video? Thanks for the help, and if there is already an existing thread where you guys are discussing this patch please pass it my way.
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a11599
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2013-04-10, 08:39
(This post was last modified: 2013-04-10, 08:40 by a11599.)
This is because deinterlacing also uses shaders and even if there is no scaling theoretically (1:1 mapping), the scaling algorithms will run and the 5450 does not have enough shader power to do both at the same time (I have not tested, but the 160 shader 6450 is probably powerful enough).
First thing you can do is trying Lanczos3 optimized, that might work with 1080i. I had an idea to make the 'auto' setting more versatile with a single GUI setting but until this patch gets into master it does not make much sense to implement and maintain.
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2013-04-10, 08:54
(This post was last modified: 2013-04-10, 08:55 by StinDaWg.)
None of the other options work, not even Bicubic. They all give the same low framerate. Only DXVA works properly. I guess I'm just stuck for now eh?
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a11599
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Yes, that is the best place.
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I am interested in video scaling. Where to get access for video scaling to know the detailed process?
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rainking, the scaling options are right below the deinterlacing options. Choose DXVA Best and then move down to the next option to change the scaling method.
a11599, what's your opinion on Lanczos3 vs Spline36? People on another forum are saying that Spline36 is better, because Lanczos3 can produce ringing artifacts. Honestly, I can't see any difference between the two.