Crashed encoding....

[Selur]

Loaded the sample, setup Avisynth:

LoadPlugin("I:\Hybrid\32bit\AVISYN~1\LSMASHSource.dll")
LoadPlugin("I:\Hybrid\32bit\AVISYN~1\AutoAdjust.dll")
SetFilterMTMode("DEFAULT_MT_MODE", MT_MULTI_INSTANCE)
# loading source: C:\Users\Selur\Desktop\1.avi
#  input color sampling YV12
#  input luminance scale tv
LWLibavVideoSource("C:\Users\Selur\Desktop\1.avi",cache=false,stacked=true,format="YUV420P8")
# current resolution: 854x480
# filtering
# color modifications
Levels(0,1.00,255,0,230,dither=true)
AutoAdjust(auto_gain=true,dark_limit=2.30,bright_limit=1.00,gamma_limit=1.00,dark_exclude=0.00,bright_exclude=0.00,chroma_process=99,avg_safety=0.55,input_tv=false)
# adjusting bit depth current 8 to target 8
PreFetch(16)
return last

and
x264:

ffmpeg -y -loglevel fatal -threads 8 -i "E:\Temp\encodingTempSynthSkript_16_27_59_2910.avs" -an -sn   -vf zscale=rangein=tv:range=tv -pix_fmt yuv420p -vsync 0  -f rawvideo - | x264 --preset veryslow --crf 16.00 --profile high --level 4.1 --ref 8 --sync-lookahead 32 --no-fast-pskip --aq-mode 2 --vbv-maxrate 62500 --vbv-bufsize 78125 --sar 1:1 --ssim --non-deterministic --range tv --colormatrix bt470bg --demuxer raw --input-res 854x480 --input-csp i420 --input-range tv --input-depth 8 --fps 30000/1001 --output-depth 8 --output "E:\Temp\16_27_59_2910_02.264" -

and the encoding worked fine here,...
-> seems like this is something on your system which is causing the problem.
(I used the version I send you,..)

Cu Selur