Color change on encoding

[Selur]

Here is the debug log of one of the problematic videos :

That is not the debug output.

Looking at the vapoursynth script and the encoding call:

"C:\Program Files\Hybrid\64bit\Vapoursynth\vspipe.exe" "C:\Users\Admin\AppData\Local\Temp\encodingTempSynthSkript_2024-11-11@02_58_55_091413_0.vpy" - -c y4m | "C:\Program Files\Hybrid\64bit\ffmpeg.exe" -y -noautorotate -nostdin -threads 8 -f yuv4mpegpipe -i - -an -sn -color_primaries bt709 -color_trc bt709 -colorspace bt709 -color_range tv -pix_fmt yuv420p -fps_mode passthrough -vcodec ffv1 -coder 0 -context 0 -g 1 -level 1 -metadata encoding_tool="Hybrid 2024.11.05.1" "C:\Users\Admin\AppData\Local\Temp\116_14_2024-11-11@02_58_55_091413_02.mkv"

and the used script:

# Imports import vapoursynth as vs # getting Vapoursynth core import ctypes import sys import os core = vs.core # Import scripts folder scriptPath = 'C:/Program Files/Hybrid/64bit/vsscripts' sys.path.insert(0, os.path.abspath(scriptPath)) # Loading Support Files Dllref = ctypes.windll.LoadLibrary("C:/Program Files/Hybrid/64bit/vsfilters/Support/libfftw3f-3.dll") # loading plugins core.std.LoadPlugin(path="C:/Program Files/Hybrid/64bit/vsfilters/GrainFilter/RemoveGrain/RemoveGrainVS.dll") core.std.LoadPlugin(path="C:/Program Files/Hybrid/64bit/vsfilters/DenoiseFilter/CTMF/CTMF.dll") core.std.LoadPlugin(path="C:/Program Files/Hybrid/64bit/vsfilters/Support/fmtconv.dll") core.std.LoadPlugin(path="C:/Program Files/Hybrid/64bit/vsfilters/MiscFilter/MiscFilters/MiscFilters.dll") core.std.LoadPlugin(path="C:/Program Files/Hybrid/64bit/vsfilters/DenoiseFilter/TTempSmooth/TTempSmooth.dll") core.std.LoadPlugin(path="C:/Program Files/Hybrid/64bit/vsfilters/DenoiseFilter/DFTTest/DFTTest.dll") core.std.LoadPlugin(path="C:/Program Files/Hybrid/64bit/vsfilters/DenoiseFilter/NEO_FFT3DFilter/neo-fft3d.dll") core.std.LoadPlugin(path="C:/Program Files/Hybrid/64bit/vsfilters/Support/DCTFilter.dll") core.std.LoadPlugin(path="C:/Program Files/Hybrid/64bit/vsfilters/DeblockFilter/Deblock/Deblock.dll") core.std.LoadPlugin(path="C:/Program Files/Hybrid/64bit/vsfilters/Support/libmvtools.dll") core.std.LoadPlugin(path="C:/Program Files/Hybrid/64bit/vsfilters/SourceFilter/BestSource/BestSource.dll") # Import scripts import psharpen import havsfunc import validate # Source: 'G:\DB KAI part A et B\005-PartA\Davinci Resolve - CC\116.mkv' # Current color space: YUV420P8, bit depth: 8, resolution: 1920x1080, frame rate: 23.976fps, scanorder: progressive, yuv luminance scale: limited, matrix: 709, transfer: bt.709, primaries: bt.709, format: FFV1 # Loading G:\DB KAI part A et B\005-PartA\Davinci Resolve - CC\116.mkv using BestSource) clip = core.bs.VideoSource(source="G:/DB KAI part A et B/005-PartA/Davinci Resolve - CC/116.mkv", cachepath="C:/Users/Admin/AppData/Local/Temp/116_bestSource_2024-11-11@02_58_55_091413", track=0) frame = clip.get_frame(0) # setting color matrix to 709. clip = core.std.SetFrameProps(clip, _Matrix=vs.MATRIX_BT709) # setting color transfer (vs.TRANSFER_BT709), if it is not set. if validate.transferIsInvalid(clip): clip = core.std.SetFrameProps(clip=clip, _Transfer=vs.TRANSFER_BT709) # setting color primaries info (to vs.PRIMARIES_BT709), if it is not set. if validate.primariesIsInvalid(clip): clip = core.std.SetFrameProps(clip=clip, _Primaries=vs.PRIMARIES_BT709) # setting color range to TV (limited) range. clip = core.std.SetFrameProps(clip=clip, _ColorRange=vs.RANGE_LIMITED) # making sure frame rate is set to 23.976fps clip = core.std.AssumeFPS(clip=clip, fpsnum=24000, fpsden=1001) # making sure the detected scan type is set (detected: progressive) clip = core.std.SetFrameProps(clip=clip, _FieldBased=vs.FIELD_PROGRESSIVE) # progressive # denoising using MCTemporalDenoise clip = havsfunc.MCTemporalDenoise(i=clip, settings="low", thSAD=400, thSAD2=400, thSCD1=400, thSCD2=100, truemotion=False, MVglobal=True, pel=4, pelsearch=5, search=5, searchparam=5, MVsharp=2, DCT=0, ncpu=1) # sharpening using PSharpen clip = psharpen.psharpen(clip=clip, strength=16.00) # applying FineDeHalo to remove halos clip = havsfunc.FineDehalo(clip, rx=2.50, ry=2.50, darkstr=0.00, brightstr=1.10) # set output frame rate to 23.976fps (progressive) clip = core.std.AssumeFPS(clip=clip, fpsnum=24000, fpsden=1001) # output clip.set_output()

the whole encoding chain does not contain any rgb<>yuv conversion, so during the filtering color matrix is not used.
So any changes in color are either due to one of the filters you used, this you should be able to see if you use the compare view to compare input and filtered input or it's caused by some tagging.

I just saw that the Hybrid video lacks "Color primaries" and "transfer characteristics" in mediainfo, idk why

Strange thing is that when I reencoded the clip (with the call I posted) I get:

Video ID : 1 Format : FFV1 Format version : Version 1 Codec ID : V_MS/VFW/FOURCC / FFV1 Duration : 6 min 28 s Bit rate mode : Variable Bit rate : 119 Mb/s Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate mode : Constant Frame rate : 23.976 (24000/1001) FPS Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Compression mode : Lossless Bits/(Pixel*Frame) : 2.394 Stream size : 5.38 GiB (98%) Writing library : Lavc61.24.100 ffv1 Default : Yes Forced : No Color range : Limited Color primaries : BT.709 Transfer characteristics : BT.709 Matrix coefficients : BT.709 coder_type : Golomb Rice

I'm still going to uninstall everything and install the last dev to see if there are any changes.

Please do, make sure to remove your settings on uninstall.
Also, try not using BestSource.


Cu Selur