Hybrid job stalls at endcoding with Deoldify

[Selur]

Looking at 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/GrainFilter/AddGrain/AddGrain.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/EEDI3m.dll")# vsQTGMC
core.std.LoadPlugin(path="C:/Program Files/Hybrid/64bit/vsfilters/ResizeFilter/nnedi3/vsznedi3.dll")
core.std.LoadPlugin(path="C:/Program Files/Hybrid/64bit/vsfilters/Support/libmvtools.dll")
core.std.LoadPlugin(path="C:/Program Files/Hybrid/64bit/vsfilters/Support/scenechange.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/DeinterlaceFilter/Bwdif/Bwdif.dll")
core.std.LoadPlugin(path="C:/Program Files/Hybrid/64bit/vsfilters/SourceFilter/LSmashSource/LSMASHSource.dll")
# Import scripts
import havsfunc
import validate
# Source: 'C:\Users\andys\Desktop\Greg\Original Clip.avi'
# Current color space: YUV422P8, bit depth: 8, resolution: 640x480, frame rate: 29.97fps, scanorder: bottom field first, yuv luminance scale: limited, matrix: 470bg
# Loading C:\Users\andys\Desktop\Greg\Original Clip.avi using LWLibavSource
clip = core.lsmas.LWLibavSource(source="C:/Users/andys/Desktop/Greg/Original Clip.avi", format="YUV422P8", stream_index=1, cache=0, prefer_hw=0)
frame = clip.get_frame(0)
# Setting detected color matrix (470bg).
clip = core.std.SetFrameProps(clip=clip, _Matrix=5)
# setting color transfer (170), if it is not set.
if validate.transferIsInvalid(clip):
  clip = core.std.SetFrameProps(clip=clip, _Transfer=6)
# setting color primaries info (to 470), if it is not set.
if validate.primariesIsInvalid(clip):
  clip = core.std.SetFrameProps(clip=clip, _Primaries=5)
# setting color range to TV (limited) range.
clip = core.std.SetFrameProps(clip=clip, _ColorRange=1)
# making sure frame rate is set to 29.97fps
clip = core.std.AssumeFPS(clip=clip, fpsnum=30000, fpsden=1001)
# making sure the detected scan type is set (detected: bottom field first)
clip = core.std.SetFrameProps(clip=clip, _FieldBased=1) # bff
# Deinterlacing using QTGMC
clip = havsfunc.QTGMC(Input=clip, Preset="Fast", TFF=False) # new fps: 29.97
# Making sure content is preceived as frame based
clip = core.std.SetFrameProps(clip=clip, _FieldBased=0) # progressive
clip = clip[::2] # selecting previously even frames
# changing color matrix from '470bg' to '709' for vsDeOldify
clip = core.resize.Bicubic(clip, matrix_in_s="470bg", matrix_s="709")
# changing range from limited to full range for vsDeOldify
clip = core.resize.Bicubic(clip, range_in_s="limited", range_s="full")
# setting color range to PC (full) range.
clip = core.std.SetFrameProps(clip=clip, _ColorRange=0)
# adjusting color space from YUV422P8 to RGB24 for vsDeOldify
clip = core.resize.Bicubic(clip=clip, format=vs.RGB24, matrix_in_s="709", range_s="full")
# adding colors using DeOldify
from vsdeoldify import HAVC_ddeoldify
clipRef = HAVC_ddeoldify(clip=clip, deoldify_p=[0, 24, 1, 0], ddcolor_p=[1, 24, 1, 0, True], ddtweak=True, sc_threshold=0.10, sc_min_freq=500)
from vsdeoldify import HAVC_deepex
clip = HAVC_deepex(clip=clip, clip_ref=clipRef, ref_merge=0, dark="True", smooth=True)
from vsdeoldify import HAVC_stabilizer
clip = HAVC_stabilizer(clip=clip, stab=True, colormap="none", render_factor=24)
# internally changing color matrix for YUV<>RGB to '470bg' undoing color matrix change for vsDeOldify
# changing range from full to limited range for vsDeOldify
clip = core.resize.Bicubic(clip, range_in_s="full", range_s="limited")
# adjusting output color from: RGB24 to YUV420P8 for x264Model
clip = core.resize.Bicubic(clip=clip, format=vs.YUV420P8, matrix_s="470bg", range_s="limited")
# set output frame rate to 29.97fps (progressive)
clip = core.std.AssumeFPS(clip=clip, fpsnum=30000, fpsden=1001)
# output
clip.set_output()

I see not problem and the encoding call:

"C:\Program Files\Hybrid\64bit\Vapoursynth\vspipe.exe" "C:\Users\andys\AppData\Local\Temp\encodingTempSynthSkript_2024-08-31@20_18_48_1310_0.vpy" - -c y4m | "C:\Program Files\Hybrid\64bit\x264.exe" --preset veryfast --bitrate 1500 --profile high --level 5.1 --ref 3 --direct auto --b-adapt 0 --sync-lookahead 24 --ratetol 2.00 --qcomp 0.50 --rc-lookahead 40 --qpmax 51 --partitions i4x4,p8x8,b8x8 --no-fast-pskip --subme 5 --aq-mode 0 --vbv-maxrate 1500 --vbv-bufsize 300000 --sar 1:1 --non-deterministic --range tv --colormatrix bt470bg --demuxer y4m --input-range tv --fps 30000/1001 --output-depth 8 --output "C:\Users\andys\AppData\Local\Temp\2024-08-31@20_18_48_1310_02.264" -

seems fine too.
According to the log, x264 didn't get any frames (wehn you killed the thread after 15min), so I suspect the issue is with processing of the Vapoursynth script.
Tested this with a similar source (same general resolution&co) and these settings and here encoding worked fine. VRAM usage spiked at ~13,5GB, encoding can at 4.5fps on a Geforce RTX 4800 with 16GB RAM.
What GPU are you using? Depending on your available VRAM, you might have to tweak your settings to use less VRAM.
Does the Vapoursynth Preview work? (it should show some details if it does not)
You can also try the dev version (+ addons in the experimental folder; I used these)

4 threads are consuming CPU time, but there isn't any indication of what's going on.

For me, it takes ~25 seconds before the first image appears when using Vapoursynth Preview.
Before aborting, check the usage of your GPU, since the engine creation will mainly run on the GPU.

Cu Selur

Ps.: Also try whether disabling your antivirus software helps. There have been issues where some antivirus software unnecessarily stalled the processing.