M2V file encoding fails with an error

x264 --preset veryfast --bitrate 3500 --profile high --level 5.1 --ref 3 --direct auto --b-adapt 0 --lookahead-threads 3 --sync-lookahead 18 --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 3500 --vbv-bufsize 300000 --sar 32:27 --qpfile GENERATED_QP_FILE --non-deterministic --range tv --colormatrix bt709 --demuxer raw --input-res 48x48 --input-csp i420 --input-range tv --input-depth 8 --fps 25/1 --output-depth 8 --output OUTPUTFILE -

ClearAutoloadDirs()

SetFilterMTMode("DEFAULT_MT_MODE", MT_MULTI_INSTANCE)

LoadPlugin("D:\Other\Hybrid\32bit\AVISYN~1\DGDecode.dll")

LoadPlugin("D:\Other\Hybrid\32bit\AVISYN~1\RgTools.dll")

LoadPlugin("D:\Other\Hybrid\32bit\AVISYN~1\masktools2.dll")

LoadPlugin("D:\Other\Hybrid\32bit\AVISYN~1\mvtools2.dll")

LoadPlugin("D:\Other\Hybrid\32bit\AVISYN~1\nnedi3.dll")

LoadPlugin("D:\Other\Hybrid\32bit\AVISYN~1\svpflow1.dll")

LoadPlugin("D:\Other\Hybrid\32bit\AVISYN~1\svpflow2.dll")

Import("D:\Other\Hybrid\32bit\avisynthPlugins\mtmodes.avsi")

Import("D:\Other\Hybrid\32bit\avisynthPlugins\QTGMC.avsi")

Import("D:\Other\Hybrid\32bit\avisynthPlugins\Zs_RF_Shared.avsi")

# loading source: D:\Video\test.m2v

# color sampling YV12@8, matrix: bt709, scantyp: top field first, luminance scale: limited

MPEG2Source(d2v="D:\Other\Temp\2023-01-22@20_37_19_1510.d2v",fieldop=0)

# current resolution: 720x480

# deinterlacing

AssumeTFF()

QTGMC(Preset="Fast", ediThreads=2)

SelectEven()

input = last

super=SVSuper(input, "{scale:{up:2},gpu:1,rc:0}")

vectors=SVAnalyse(super, "{main:{search:{coarse:{distance:0},type:4}},refine:[{thsad:200}]}")

SVSmoothFps(input, super, vectors, "{rate:{num:2,den:1},algo:13,mask:{area:0},scene:{mode:3}}", mt=24)

# filtering

# setting output fps to 59.940fps

AssumeFPS(60000,1001)

PreFetch(6)

#  output: color sampling YV12@8, matrix: bt709, scantyp: progressive, luminance scale: limited

return last

"D:\Other\Hybrid\32bit\ffmpeg.exe" -y -loglevel fatal -noautorotate -nostdin -threads 8 -i "D:\Other\Temp\encodingTempSynthSkript_2023-01-22@20_37_19_1510_0.avs" -an -sn -vf zscale=rangein=tv:range=tv -pix_fmt yuv420p -vsync 0 -f rawvideo -

| "D:\Other\Hybrid\64bit\x264.exe" --preset veryfast --bitrate 3500 --profile high --level 5.1 --ref 3 --direct auto --b-adapt 0 --sync-lookahead 18 --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 3500 --vbv-bufsize 300000 --sar 32:27 --non-deterministic --range tv --colormatrix bt709 --demuxer raw --input-res 720x480 --input-csp i420 --input-range tv --input-depth 8 --fps 60000/1001 --output-depth 8 --output "D:\Other\Temp\2023-01-22@20_37_19_1510_04.264" -