color correction for white balance wrong?

[marcorocchini]

Hi but please be simple (I'm a c*t)

I'm looking for a simple way to correct my wrong footage with wrong color white balance, using avisynth? or ffmpeg? or (better) virtualdub.

If possibile I should need a list of 2/3 preset that correct the white balance with some practical purpose for more cold or more warm.

For example:

my footage have the camera set to 4.000 k but the real situation have 8/9.000 K so image is too cold --> if there is 2/3 preset that let me view image, without intervening with complex parameters, and choice the one that is more suitable.

Is there a way? thanks

[raffriff42]

Here's one:
https://github.com/ladipro/avisynth_filters/wiki/KelvinColorShift

LoadPlugin("KelvinColorShift.dll")
## requires RGB

KelvinColorShift(4000, 8000)

Here's something I did:
https://forum.doom9.org/showthread.php?p=1671928#post1671928

## requires MaskTools
## requires YUV

## lowlights, midrange, highlights: negative=warmer output; positive=cooler
CheapColorTemp(0, -10, -10) 
## (make output warmer, keeping black balance the same)

[johnmeyer]

Get an NLE and use its color correction tools.

You can get a first approximation to this by using Colormill in Virtualdub.

[marcorocchini]

Here's one:
https://github.com/ladipro/avisynth_filters/wiki/KelvinColorShift

LoadPlugin("KelvinColorShift.dll")
## requires RGB

KelvinColorShift(4000, 8000)

Here's something I did:
https://forum.doom9.org/showthread.php?p=1671928#post1671928

## requires MaskTools
## requires YUV

## lowlights, midrange, highlights: negative=warmer output; positive=cooler
CheapColorTemp(0, -10, -10) 
## (make output warmer, keeping black balance the same)

Import("v:\automazioneclip\avisynth\plugins\IResize.avsi")
LoadPlugin("v:\automazioneclip\avisynth\plugins\LSMASHSource.dll")
LoadPlugin("v:\automazioneclip\avisynth\plugins\KelvinColorShift.dll")
LoadCPlugin("v:\automazioneclip\core\yadif.dll")  
LWLibavVideoSource("C:\Users\Administrator\Desktop\Nuova cartella (6)\C0072.MXF")
ConvertToRGB(interlaced=true, matrix="rec601")
KelvinColorShift(4000, 7000)

[marcorocchini]

thanks ^^


[Attachment 42409 - Click to enlarge]

[LMotlow]

Here's one:
https://github.com/ladipro/avisynth_filters/wiki/KelvinColorShift

LoadPlugin("KelvinColorShift.dll")
## requires RGB

KelvinColorShift(4000, 8000)

Must have missed something.
No dll found at those linked pages, just C++ source code only.

[raffriff42]

Sorry,
https://github.com/ladipro/avisynth_filters/releases

[LMotlow]

Thanks. Both plugins at that link could prove very useful.
The earlier link to the wiki page is good info, however, so thanks for both.