I am looking for a way to soften video some. I usually sharpen and never really need to soften or blur the image, but downscaling my 1080p Blu-Ray to 720p is causing the picture to appear far too sharp.
Are there any good avisynth filters for softening/blurring the video?
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Spline36Resize isn't soft enough? I already tried that over the LanczosResize I usually use.
It helped, but it was so minor that the difference was almost not noticeable even when flipping back and forth through comparison screenshots.
It's also far too sharp when I try to downscale it to 480p.
What would you recommend I try? I wish to soften it some, but I don't wish to lose a lot of fine details from a poor resizer if possible.Last edited by killerteengohan; 15th Sep 2015 at 01:45.
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Start with a less sharp resize, like Bilinear(). That's much closer to what the human eye would see when moving the picture farther away. If that's still too sharp (because your source was too sharp) use Blur(0.5) # or whatever value you need.
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Here is a visualization for various resizing algorithms.
http://svn.int64.org/viewvc/int64/resamplehq/doc/kernels.html
Notice Spline36 is close to Lanczos3 (Which is LanczosResize(taps=3), or the default LanzosResize() in avisynth) in terms of sharpness and ringing -
I think I will just go with the Blur(0.5) Jagabo mentioned because the source even before being resized was too sharp, the downscale just made it unbearable to the eyes.
Is that about the only blurring/softening filter there is?
Thanks everyone! -
Is that about the only blurring/softening filter there is?users currently on my ignore list: deadrats, Stears555
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GeneralConvolution can be used to blur:
Code:GeneralConvolution(matrix="1 1 1 1 4 1 1 1 1")
Code:GaussianBlur(0.6)
You can use resize to blur too:
Code:BilinearResize(width*3/4, height*3/4).BilinearResize(width, height)
All those are roughly equivalent to Blur(1.0). And Blur can blur by different amounts vertically and horizontally. For example you can use Blur(0.0, 0.5) to reduce interlace flicker (blur before interlacing).Last edited by jagabo; 19th Sep 2015 at 08:48.
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