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Topic: Artifacts on side

Hi, when im watching things, there would be these things on the borders. What should i change to remove those problems?

http://i.imgur.com/ozfhNrU.jpg

This is my settings

http://i.imgur.com/FH9mQfX.jpg

Specs:
i5 2500k @4.7GHz
Gigabyte GTX 770

Thanks!

  • Thanks: 57

Re: Artifacts on side

hi, for me is " Uniform (max smoothness) " and " 23. Complicated ", these provide max smoothness at cost of artifacts. Lower settings on those options provide less artifact but less smoothness that can be noticed depending of the person. Maxed all settings for example wont free you of zero artifacts, you have to toy there to make something balanced between decent smooth with tolerable artifacts. Less smooth means less artifacts, more smooth means more artifacts, that's the price.

sorry bad English.

  • MAG79
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Re: Artifacts on side

heartog
You can continue to use your settings without changes. To completely remove artifacts at frame edges you need to cut thin black borders at edges: SVP tray menu - Frame crop - By four pixels on each side.
Or use custom crop and visually tune width of cutting borders while playback: SVP tray menu - Frame crop - Custom...

4 Reply by heartog (edited by heartog 04-03-2014 03:33:27)

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Re: Artifacts on side

sometimes even logos and other things will have artifacts, so the only option is to lower those settings?

Also, which settings will lower smoothness when it is increased? i want the max smoothness.

  • MAG79
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Re: Artifacts on side

heartog
Max smoothness gives max artifacts. And all methods to reduce artifacts lead to reduce smoothness.
You need to find compromise for yourself. Our developer's compromise is marked against every settings by word (default).

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Re: Artifacts on side

i tried to change everything to default and still there is LOTS of artifacts especially on words

  • Thanks: 57

Re: Artifacts on side

heartog

can you provide a small sample of that clip?

8 Reply by heartog (edited by heartog 08-03-2014 00:46:49)

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Re: Artifacts on side

sample video
https://drive.google.com/file/d/0Byl1C2 … sp=sharing

notice the "MBC" logo on the top right

Please download it instead of watching it on the page

9 Reply by Maken1 (edited by Maken1 08-03-2014 03:19:38)

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Re: Artifacts on side

heartog wrote:

sample video
https://drive.google.com/file/d/0Byl1C2 … sp=sharing

notice the "MBC" logo on the top right

Please download it instead of watching it on the page

thanks for the clip, its too short to can test better but thanks anyway. Again keep in mind that you cant reduce 100% artifacts without sacrifice Smoothness, you have to get use to it in some point. When I started with this for first time I was not used to artifacts later after all this time now I do some, Im ok with some artifacts because I know its normal I know that if I want more smoothness there will be some in fast motions and such static logos and more on the scene will be with some artifacts.

Try this settings and see if you like:

http://img.overpic.net/thumbs/n/3/1/xn31f8fvqf61rpk4vwuc1_s.jpg

Artifacts masking helps more to reduce " artifacts " and of course depending of the scene and more. but there is a problem you lost smoothness as I told you its normal, its up to you how much you could sacrifice for one thing or for the other ( Artifacts vs Smoothness ). Toy with it and see for yourself.

btw the sample have nice image quality. I would like to try more with the one from your first imagen / post because it got more static and letters on the screen

10 Reply by MistahBonzai (edited by MistahBonzai 08-03-2014 05:17:03)

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Re: Artifacts on side

I had similar issues with logo overlays causing motion defects when the video panned.  My test file: https://vimeo.com/51322829 smile I run 'SVP' via avisynth so I don't have the SVP settings off the top of my head.  But here is the pertinent part of the avisynth script I use. Basically I reduced the block size to 16 (H&V) and set overlap to 2.  It didn't completely cure it but it's 'not all that bad' now.

BTW: These are settings for a 720P/23.976 video displayed at 59.938

nnedi3_rpow2(rfactor=2,cshift="Spline36Resize",fwidth=1920,fheight=1080,nsize=0,nns=2,qual=1)
global crop_params=""
global resize_string=""#spline36resize(2560,1440)  lanczos4resize(1920,1080)
global super_params="{pel:2,scale:{up:0},gpu:1,full:true,rc:true}"#pel:1 full:false
global analyse_params="{block:{overlap:2,w:16},main:{search:{coarse:{distance:-10},distance:0}},refine:[{thsad:250}]}"#overlap:0,w:32
global smoothfps_params="{rate:{num:5,den:2},algo:13,mask:{cover:80},scene:{blend:true,limits:{scene:6000,zero:100,blocks:51}}}"
#global smoothfps_params="{rate:{num:24000,den:1001,abs:true},algo:23,mask:{cover:80},scene:{blend:true}}"