Good morning friends,
I don't know why the blue colors automatically change to purple after any filtering in avisynth.
Notice in people's hair and skin that the reflected blue light changes color. Is there a script or some way to follow the original?
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Is it in the preview or just in the encoding? (might be vui signaling problem if it's really any filter and just after encoding)
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You have a rec.601 vs rec.709 problem. Note the colorspace of the source. If you convert in AviSynth be sure to specify the corresponding matrix, for example:
Code:ConvertToRGB(matrix="rec709") # RGB manipulations here ConvertToYV12(matrix="rec709")
Code:x264.exe --preset=slow --crf 18 --sar=1:1 --keyint 50 --colormatrix bt709 --output "output.mkv" "input.mkv"
Note that standard definition video is usually rec.601, high definition video is usually rec.709. So if you're upscaling you want to convert rec.601 to rec.709: ColorMatrix("rec.601->rec.709").
Code:ImageSource("Screenshot_2.png", start=0, end=23, fps=23.976) AddBorders(0,0,1,2) ConvertToYV12(matrix="rec601") # assume the left side is rec.601 left = Crop(0,0,width/2,-0) # get the left half right = Crop(width/2,0,-0,-0) # get the right half right = right.ColorMatrix("rec.709->rec.601").ColorMatrix("rec.709->rec.601") # two rec.709 to rec.601 adjustments StackHorizontal(left, right) # stack the back together ConvertToRGB(matrix="rec601") # convert back to RGB
[Attachment 82461 - Click to enlarge]Last edited by jagabo; 25th Sep 2024 at 12:12.
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