Color Correction of VHS capture

[smartel]

The whites are brown to orange , i don't know if it's burned in or anyway to correct this

and if possiblei want to stay in 422 as long as possible

so far i'm working with that script :

FFVideoSource("H:\1\Sportheque\GUY.09.01.mkv",colo rspace="YUY2")
# current resolution: 712x576

# cropping
Crop(4,0,-4,-96)# 704x480

# deinterlacing
ConvertToYV16(interlaced=true)
AssumeTFF().ReduceFlicker()
QTGMC(Preset="Fast", NoiseDeint="Generate", ediThreads=2)

# color modifications
SmoothLevels(input_low=11,input_high=255,Ecurve=0, HQ=true)
SmoothTweak(hue1=3, hue2=0, brightness=0, saturation=0.8,HQ=true,TVrange=True, Limiter=False)
#Histogram("Levels")
#Histogram("Color2")

# reducing kinescope moire
DeStripe(rad=2,offset=0,thr=1)

# scaling to 960x720
nnedi3_rpow2(rfactor=2,cshift="Spline36Resize",fwi dth=960,fheight=720)

PreFetch(4)
# setting output fps to 59.940fps
AssumeFPS(60000,1001)

ConvertBits(8)

and the mediainfo gives this:

General
Unique ID : 32971893598388217430140786845060223731 (0x18CE27DD4B44047ED48F9CDDD474D2F3)
Complete name : H:\1\Sportheque\GUY.09.01.mkv
Format : Matroska
Format version : Version 4
File size : 22.0 GiB
Duration : 34 min 6 s
Overall bit rate : 92.3 Mb/s
Frame rate : 29.970 FPS
Writing application : Lavf58.76.100
Writing library : Lavf58.76.100
ErrorDetectionType : Per level 1

Video
ID : 1
Format : HuffYUV
Format version : Version 2
Codec ID : V_MS/VFW/FOURCC / HFYU
Duration : 34 min 6 s
Bit rate : 88.9 Mb/s
Width : 712 pixels
Height : 576 pixels
Display aspect ratio : 5:4
Frame rate mode : Constant
Frame rate : 29.970 (29970/1000) FPS
Color space : YUV
Chroma subsampling : 4:2:2
Bit depth : 8 bits
Bits/(Pixel*Frame) : 7.235
Stream size : 21.2 GiB (96%)
Default : Yes
Forced : No

Audio
ID : 2
Format : PCM
Format settings : Little / Signed
Codec ID : A_PCM/INT/LIT
Duration : 34 min 6 s
Bit rate mode : Constant
Bit rate : 1 536 kb/s
Channel(s) : 2 channels
Sampling rate : 48.0 kHz
Bit depth : 16 bits
Stream size : 375 MiB (2%)
Default : Yes
Forced : No

ReportBy : MediaInfoLib - v25.04


I don't know why it was captured that way , more than 10 years ago , the tape is now long gone

captured with a JVC 5800 and a datavideo TBC-1000 and a old ATI capture card that i can't recall

[Selur]

Maybe try:
a. Levels to scale the colors to 16-235
b. use Tweak to lower the saturation (maybe to 0.8)
b. apply GrayWorld https://github.com/Asd-g/AviSynthPlus-grayworld

[smartel]

i'm on windows 7 and .. does grayworld available in hybrid ?

ConvertToRGB32() is not enough needs planar format , how do i do that

added

ConvertToRGB32()
PackedToPlanar()
grayworld()

and still throw same error needs RGB32 planar reverses it and said that input is already in planar format

PackedToPlanar()
ConvertToRGB32()
grayworld()

[Selur]

Hybrid does support Grayworld through Vapoursynth, not Avisynth. (but current versions will not work on Windows 7)

In Avisynth you probably should use: ConvertToPlanarRGB
you could also use https://github.com/Dogway/Avisynth-Scripts/blob/master/GradePack.avsi => GreyWorld

[smartel]

Well i found Grayworld inside kdenlive , turns the reds into green .. and i will look into GradePack and see where it goes

[johnmeyer]

Color correction is usually best achieved using an NLE because most of them have sophisticated color correction tools, and you can do the corrections interactively.

You might consider using some sort of audio restoration on the horribly clipped audio.

[smartel]

For NLE i only have , Shotcut , Kdenlive and vegas movie studio ( no scopes, but will be using it for stabilisation) and the audio was clipped at the microphone level

[davexnet]

Here's an example, done competely in Virtualdub2

[Alwyn]

That's good, Dave, what was your secret sauce? I used the Camcorder Colour Denoiser and 6-Axis Colour Corrector.

[davexnet]

Hi Alwyn, they're almost the same. I reduced saturation a little and employed the temporal smoother as a last step