Colour adjustment on VHS wedding?

[Dinsdale87]

Hi guys

I have uploaded a sample clip of a wedding video I have captured. The quality isn't bad, but the colour is rather grim looking. Can anyone recommend a script to brighten it up and get more natural colours? Sample is outdoors with skin visible.

I have tried messing with the script below I found by Google, but obviously that was catered for another video. I can't seem to get the levels right for my video (if that's even what I should be doing?)

Any added stuff such as Chromashift adjustment or denoising would be helpful, I have quite a few filters but I am newish to Avisynth.

ConvertToRGB(matrix="rec601")
ConvertToRGB(matrix="rec601")
RGBAdjust(rb=-1, gb=-38, bb=-17) # blacks to ~0
RGBAdjust(r=0.87, b=1.25) # white balance
RGBAdjust(rg=1.3, gg=1.3, bg=1.3) # gamma to lighten the shadows a bit
ConvertToYUY2(matrix="rec601")  # back to YUY2

[Selur]

AutoWhite + Softlight(mode=6, formula=2), both are available for Avisynth and might help.
Maybe some LUT for color adjustment seems like a good start to me, but I'm nowhere good at color grading.
Going to bed now, but the chroma plane is a mess.

(just playing around: https://pastebin.com/syK94Gpr, video attached; not using Avisynth, but Vapoursynth)

Cu Selur

[Sharc]

Tinkering with color grading of an NLE?

[Dinsdale87]

Thanks guys. I'm not familiar with Vapoursynth. Will the script word with avisynth, too?

[Sharc]

You may play with ColorYUV() in Avisynth, something along the line

colorYUV(gain_u=-0.0,gain_v=65.0,off_u=0,off_v=-50,cont_v=200, cont_u=100,autowhite=false,autogain=false)

(You can do similar with your RGB filters though, or ColorMill in Vdub .....)

or sometimes grayscale is an option

[Selur]

Will the script word with avisynth, too?

No, the script will not work with Avisynth, but the color adjustment can be done with Avisynth too:

LWLibavVideoSource("C:\Users\Selur\Desktop\Sample2.avi",cache=false,dr=true,format="YUV422P8", prefer_hw=0)
# color sampling YV16@8, matrix: bt601, scantyp: progressive, luminance scale: limited
# AutoWhite with ColorYUV http://avisynth.nl/index.php/ColorYUV
ColorYUV(autowhite=true)
# Color adjustements Softlight https://github.com/ArturAlekseev/AVS_SoftLight/releases
ConvertToPlanarRGB()
Softlight(mode=6, formula=2)
# Applying a Lut from https://github.com/FranceBB/LinearTransformation with AvsCube http://avisynth.nl/index.php/AVSCube
Cube(cube="F:/Hybrid/64bit/vsfilters/ColorFilter/TimeCube/BT2020_HLG_BT601_PAL.cube", fullrange=0)

This is what it looks like without chroma denoising:


Cu Selur