Win 10 crashes with long AVI file processing

[JamesMay]

Windows 10.0.19044 Build 19044
Hybrid 2026.03.21.1

I'm deinterlacing .AVI files to MP4 with upscaling to 1920x1080 at 29.97fps using QTGMC.
Shorter files (<10 minutes) work fine. If I use a long file (1:43:34) it runs for a while then crashes my computer. I think this also happens with several short files stacked up in the job queue.

Debug file attached. 
Any clues?

James

[Selur]

Hmm,.. the debug output simply stops,...
Since the script:

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/ResizeFilter/nnedi3/NNEDI3CL.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/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/GrainFilter/AddGrain/AddGrain.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/DenoiseFilter/DFTTest/DFTTest.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/fmtconv.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/Support/akarin.dll") core.std.LoadPlugin(path="C:/Program Files/Hybrid/64bit/vsfilters/DenoiseFilter/ZSmooth/zsmooth.dll") core.std.LoadPlugin(path="C:/Program Files/Hybrid/64bit/vsfilters/SourceFilter/LSmashSource/LSMASHSource.dll") # Import scripts import edi_rpow2 import denoise import qtgmc import validate # Source: 'L:\Video Projects\Schley-May Family\VHS-01 - Clip 003.avi' # Current color space: YUV411P8, bit depth: 8, resolution: 720x480, frame rate: 29.97fps, scanorder: bottom field first, yuv luminance scale: limited, matrix: 470bg, format: DV # Loading 'L:\Video Projects\Schley-May Family\VHS-01 - Clip 003.aviÄ using LWLibavSource clip = core.lsmas.LWLibavSource(source="L:/Video Projects/Schley-May Family/VHS-01 - Clip 003.avi", format="YUV411P8", stream_index=0, cache=0, prefer_hw=0) frame = clip.get_frame(0) # setting color matrix to 470bg. clip = core.std.SetFrameProps(clip, _Matrix=vs.MATRIX_BT470_BG) # setting color transfer (vs.TRANSFER_BT601), if it is not set. if validate.transferIsInvalid(clip): clip = core.std.SetFrameProps(clip=clip, _Transfer=vs.TRANSFER_BT601) # setting color primaries info (to vs.PRIMARIES_BT470_BG), if it is not set. if validate.primariesIsInvalid(clip): clip = core.std.SetFrameProps(clip=clip, _Primaries=vs.PRIMARIES_BT470_BG) # setting color range to TV (limited) range. clip = core.std.SetFrameProps(clip=clip, _ColorRange=vs.RANGE_LIMITED) # 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=vs.FIELD_BOTTOM) # scan type: bottom field first # adjusting color space from YUV411P8 to YUV444P16 for vsQTGMC clip = core.resize.Bicubic(clip=clip, format=vs.YUV444P16, dither_type="error_diffusion") # Deinterlacing using QTGMC clip = qtgmc.QTGMC(Input=clip, Preset="Slower", InputType=0, TFF=False, TR2=0, Sharpness=0.1, SourceMatch=3, Lossless=2) # new fps: 59.94 # Making sure content is preceived as frame based clip = core.std.SetFrameProps(clip=clip, _FieldBased=vs.FIELD_PROGRESSIVE) # scan type: progressive clip = clip[::2] # selecting previously even frames, new fps: 29.97 # ColorMatrix: adjusting color matrix from 470bg to 709 # adjusting luma range to 'limited' due to post clipping clip = core.resize.Bicubic(clip, matrix_in_s="470bg", matrix_s="709", range_in=0, range=0) clip = core.std.Crop(clip, left=4, right=4, top=4, bottom=8) # cropping to 712x468 # denoising using MCTemporalDenoise clip = denoise.MCTemporalDenoise(clip, settings="low", ncpu=1) # resizing using NNEDI3CL # current: 712x468 target: 1920x1440 -> pow: 4 clip = edi_rpow2.nnedi3cl_rpow2(clip, rfactor=4, nsize=3, nns=4) # 2848x1872 # resizing 2848x1872 to 1920x1440 clip = core.fmtc.resample(clip, w=1920, h=1440, kernel="spline64", interlaced=False, interlacedd=False) # before YUV444P16 after YUV444P16 # adjusting output color from YUV444P16 to YUV420P8 for x264Model clip = core.resize.Bicubic(clip=clip, format=vs.YUV420P8) # set output frame rate to 29.97fps (progressive) clip = core.std.AssumeFPS(clip=clip, fpsnum=30000, fpsden=1001) # output clip.set_output() # script was created by Hybrid 2026.03.21.

looks fine and the encoding call:

"C:\Program Files\Hybrid\64bit\Vapoursynth\vspipe.exe" "C:\Users\james\AppData\Local\Temp\encodingTempSynthSkript_2026-06-25@11_05_07_5810_0.vpy" - --outputindex 0 -c y4m |"C:\Program Files\Hybrid\64bit\x264.exe" --preset fast --pass 1 --bitrate 14000 --profile high --level 5.1 --ref 1 --min-keyint 25 --direct auto --b-adapt 0 --rc-lookahead 40 --sync-lookahead 36 --qcomp 0.50 --qpmax 51 --partitions none --no-8x8dct --me dia --subme 2 --trellis 0 --aq-mode 0 --sar 1:1 --non-deterministic --range tv --stats "C:\Users\james\AppData\Local\Temp\VHS-01 - Clip 003_1_2026-06-25@11_05_07_5810_05.stats" --demuxer y4m --input-range tv --fps 30000/1001 --output-depth 8 --output NUL -

starts fine and runs for a while (~10min), it's probably not a Vapoursynth issue or similar.

The typical reason for system crashes, are:
(from most likely to not so likely)

• over- or underclocked cpu, ram, vram, gpu (when I over-/underclock stuff, one of my tests is to do a few days of encoding, to be sure the system is stable)
  
• temperature issues that cause issues with cpu, ram, vram, gpu
  
• some other tool interfering and causing memory issues
  
• some defect drivers
  
• some defect hardware (does a stress test that stresses memory, cpu and gpu at the same time run fine? - maybe run different stress tests in parallel)
  
• some really exotic defect source file that causes one of the Vapoursynth filters to eat-up all the memory and crashing
  

=> my guess would be a heat issue

Cu Selur

[JamesMay]

Thanks. I've just installed Core Temp to look for a heat issue. However, the job (any file) is now stalling at the step where video processing starts. It didn't do that before. I get this in the debug output file:
2026.06.27 - 16:57:31_Windows 10 Version 21H2 (64bit)_2026.03.21.1 - level 9: Main call started,..
2026.06.27 - 16:57:31_Windows 10 Version 21H2 (64bit)_2026.03.21.1 - level 9: Setting m_startingJobs(2) to FALSE

Not sure what to make of it.

[Selur]

Close Hybrid, clear temp folder, restart Hybrid, reset the job, try again.

[JamesMay]

Did those things. Still stalls at the same place SOMETIMES with shorter clips, and ALWAYS with a long clip 1:43:00.

[Selur]

Okay, if it crashes at the same spot, the source filter might have problems with the source file.
Try using another source filter.
Atm. LWLibavSource is used, try these (one at a time):

• using AviSource, assuming a vfw decoder for the format in the container is installed on your system (enable Filtering->Vapoursynth->Misc->Source->Prefer AviSource for .avi input)
  
• using FFmpegSource2 instead of LWLibavSource (disable Filtering->Vapoursynth->Misc->Source->Prefer LWLibAVSrouce over FFMpegSource2)
  
• using BestSource (enable Filtering->Vapoursynth->Misc->Source->Prefer Bestsource)
  

If none of these helps, try whether remuxing your fine into a mkv container using mkvtoolnix and then feeding the remuxed file to Hybrid helps.

Cu Selur

[JamesMay]

The original issue that cause my PC to stop has been confirmed to be thermal, though I'm not sure why a 60C average in the 12 cores would do that. I'll investigate this further, but I think we should close this thread. I have other issues with Hybrid that I will post in separate threads. Thanks for all your help.

[Selur]

If your cpu has performance and efficiency cores, try disabling the efficiency cores.

Cu Selur