Improvement of this Video possible?

JohnDoe · 5th December 2015, 18:11

https://anonfiles.com/file/5644d3877...87ae2ea3e1e8b0

Is it somehow possible to fix this red/yellow/blue areas at the edges with some avisynth filters/plugins? I do not know how this is called. Is this rainbowing?

At the end I'll definitely change the size to 960x544 and re-encode it.

wonkey_monkey · 5th December 2015, 18:59

That's chromatic aberration, and you can more-or-less eliminate it by separating the image into its red/green/blue components, and scaling up the blue channel slightly (about 100.7%) and scaling down the red (about 99.7%).

Not sure of the quickest way to do this off the top of my head. Someone else will probably post a solution before I get around to thinking about it.

Someone beat me to it: http://avisynth.nl/index.php/FixChromaticAberration (although this isn't particular efficient, if you care about such things)

Edit: while the above is quick way of fixing it, the aberration isn't constant throughout the image, so if you really want to fix it, it needs a more complicated remapping of pixels.

JohnDoe · 5th December 2015, 23:15

I tried this one: http://avisynth.nl/index.php/Caf_source

Works like a charme with settings "caf(-8.0)".

Thanks for the hint!

5th December 2015, 18:11	#1 \| Link
JohnDoe Registered User Join Date: Aug 2015 Posts: 15	Improvement of this Video possible? https://anonfiles.com/file/5644d3877...87ae2ea3e1e8b0 Is it somehow possible to fix this red/yellow/blue areas at the edges with some avisynth filters/plugins? I do not know how this is called. Is this rainbowing? At the end I'll definitely change the size to 960x544 and re-encode it.

5th December 2015, 18:59	#2 \| Link
wonkey_monkey Formerly davidh***** Join Date: Jan 2004 Posts: 2,496	That's chromatic aberration, and you can more-or-less eliminate it by separating the image into its red/green/blue components, and scaling up the blue channel slightly (about 100.7%) and scaling down the red (about 99.7%). Not sure of the quickest way to do this off the top of my head. Someone else will probably post a solution before I get around to thinking about it. Someone beat me to it: http://avisynth.nl/index.php/FixChromaticAberration (although this isn't particular efficient, if you care about such things) Edit: while the above is quick way of fixing it, the aberration isn't constant throughout the image, so if you really want to fix it, it needs a more complicated remapping of pixels. __________________ My AviSynth filters / I'm the Doctor Last edited by wonkey_monkey; 5th December 2015 at 19:11.

5th December 2015, 23:15	#3 \| Link
JohnDoe Registered User Join Date: Aug 2015 Posts: 15	I tried this one: http://avisynth.nl/index.php/Caf_source Works like a charme with settings "caf(-8.0)". Thanks for the hint!