Crashed ffmpeg...

[Selur]

Avisynth script looks fine to me:

ClearAutoloadDirs()
SetFilterMTMode("DEFAULT_MT_MODE", MT_MULTI_INSTANCE)
LoadCPlugin("C:\Program Files\Hybrid\64bit\Avisynth\avisynthPlugins\ffms2.dll")
Import("C:\Program Files\Hybrid\64bit\Avisynth\avisynthPlugins\mtmodes.avsi")
# loading source: D:\clips\new13\old\Raffaella Carra - Male_iris3.avi
# color sampling YV12@8, matrix: bt709, scantyp: progressive, luminance scale: limited
FFVideoSource("D:\clips\new13\old\Raffaella Carra - Male_iris3.avi",cachefile="K:\temp\2024-03-09@21_43_11_6810.ffindex",fpsnum=25,colorspace="YV12")
# converting to target color space
# current resolution: 1440x1152
Tweak(hue=5.00,bright=-2.70,cont=1.03)
# setting output fps to 25.000fps
AssumeFPS(25,1)
PreFetch(8)
#  output: color sampling YV12@8, matrix: bt709, scantyp: progressive, luminance scale: limited
return last

"C:\Program Files\Hybrid\64bit\ffmpeg.exe" -y -loglevel fatal -noautorotate -nostdin -threads 8 -i "K:\temp\encodingTempSynthSkript_2024-03-09@21_43_11_6810_0.avs" -an -sn -color_primaries bt2020 -color_trc bt2020_10 -colorspace bt709 -color_range tv -pix_fmt yuv420p -vsync 0 -f yuv4mpegpipe - | "C:\Program Files\Hybrid\64bit\NVEncC.exe" --y4m -i - --fps 25.000 --codec h264 --profile high --level 4.1 --sar 16:15 --lookahead 16 --cqp 20:23:25 --gop-len 0 --ref 3 --bframes 3 --direct auto --bref-mode auto --no-b-adapt --mv-precision Q-pel --cabac --deblock --preset default --colorrange limited --colormatrix bt709 --cuda-schedule sync --output "K:\temp\Raffaella Carra - Male_iris3_1_2024-03-09@21_43_11_6810_04.264"

Looks fine too.
Does the Avisynth Preview work?
If it works does:

"C:\Program Files\Hybrid\64bit\ffmpeg.exe" -y -noautorotate -nostdin -threads 8 -i "K:\temp\encodingTempSynthSkript_2024-03-09@21_43_11_6810_0.avs" -an -sn -color_primaries bt2020 -color_trc bt2020_10 -colorspace bt709 -color_range tv -pix_fmt yuv420p -vsync 0 -f yuv4mpegpipe NUL

show an error when called?

Cu Selur