[BUG] Encoder Crash (Helper1, exitCode: -1073741819)

[Selur]

Looked at the debug output 'Vapoursynth'.
The script used by Hybrid:

# Imports
import vapoursynth as vs
# getting Vapoursynth core
core = vs.core
# Loading Plugins
core.std.LoadPlugin(path="C:/Program Files/Hybrid/64bit/vsfilters/Support/fmtconv.dll")
core.std.LoadPlugin(path="C:/Program Files/Hybrid/64bit/vsfilters/SourceFilter/LSmashSource/vslsmashsource.dll")
# source: 'C:\Users\Alex\Videos\Hybrid\Input\TESTVIDEO.mkv'
# current color space: YUV420P8, bit depth: 8, resolution: 1920x1080, fps: 23.976, color matrix: 709, yuv luminance scale: limited, scanorder: progressive
# Loading C:\Users\Alex\Videos\Hybrid\Input\TESTVIDEO.mkv using LWLibavSource
clip = core.lsmas.LWLibavSource(source="C:/Users/Alex/Videos/Hybrid/Input/TESTVIDEO.mkv", format="YUV420P8", cache=0, prefer_hw=0)
# Setting color matrix to 709.
clip = core.std.SetFrameProps(clip, _Matrix=1)
clip = clip if not core.text.FrameProps(clip,'_Transfer') else core.std.SetFrameProps(clip, _Transfer=1)
clip = clip if not core.text.FrameProps(clip,'_Primaries') else core.std.SetFrameProps(clip, _Primaries=1)
# Setting color range to TV (limited) range.
clip = core.std.SetFrameProp(clip=clip, prop="_ColorRange", intval=1)
# making sure frame rate is set to 23.976
clip = core.std.AssumeFPS(clip=clip, fpsnum=24000, fpsden=1001)
clip = core.fmtc.resample(clip=clip, kernel="spline16", w=1280, h=720, interlaced=False, interlacedd=False)
# Loading C:\Users\Alex\Videos\Hybrid\Output\TESTVIDEO_id_2_lang_en_default.ass using SubText
clip = core.sub.TextFile(clip=clip, file="C:/Users/Alex/Videos/Hybrid/Output/TESTVIDEO_id_2_lang_en_default.ass", fontdir="C:/Users/Alex/AppData/Roaming/hybrid/fonts")
# adjusting output color from: YUV420P16 to YUV420P8 for x264Model
clip = core.resize.Bicubic(clip=clip, format=vs.YUV420P8, range_s="limited")
# set output frame rate to 23.976fps
clip = core.std.AssumeFPS(clip=clip, fpsnum=24000, fpsden=1001)
# Output
clip.set_output()

looks fine, but the encoder call:

"C:\Program Files\Hybrid\64bit\Vapoursynth\vspipe.exe" "C:\Users\Alex\Videos\Hybrid\Temp\encodingTempSynthSkript_2022-04-11@04_32_38_7610.vpy" - -c y4m | "C:\Program Files\Hybrid\64bit\x264.exe" --preset slower --profile baseline --level 3.1 --ref 5 --sync-lookahead 18 --partitions i4x4,p4x4,p8x8,b8x8 --merange 24 --vbv-maxrate 42000 --vbv-bufsize 14000 --sar 1:1 --no-deblock --non-deterministic --range tv --colormatrix bt709 --demuxer y4m --input-range tv --fps 24000/1001 --output-depth 8 --output "C:\Users\Alex\Videos\Hybrid\Temp\2022-04-11@04_32_38_7610_06.264" -

crashes with:

y4m [error]: bad sequence header magic

This usually means:

• something is amiss with the Vapoursynth script (source or subtitle filter having problems with the input), or
  
• the input is broken in some way, or
  
• some anti virus tool (or similar) is interfering, or
  
• there is another Vapoursynth installation on the system that is causing the problem
  

-> Does the Vapoursynth Preview work without a problem or does is show an error message?

Looking at the AviSynth script:

ClearAutoloadDirs()
SetFilterMTMode("DEFAULT_MT_MODE", MT_MULTI_INSTANCE)
LoadPlugin("C:\PROGRA~1\Hybrid\32bit\AVISYN~1\LSMASHSource.dll")
LoadPlugin("C:\PROGRA~1\Hybrid\32bit\AVISYN~1\VSFilter.dll")
# loading source: C:\Users\Alex\Videos\Hybrid\Input\TESTVIDEO.mkv
# color sampling YV12@8, matrix: bt709, scantyp: progressive, luminance scale: limited
LWLibavVideoSource("C:\Users\Alex\Videos\Hybrid\Input\TESTVI~1.MKV",cache=false,format="YUV420P8", prefer_hw=0,repeat=true)
# current resolution: 1920x1080
# filtering
# scaling to 1280x720
Spline36Resize(1280,720)
# embedding subtitles
TextSub("C:\Users\Alex\Videos\Hybrid\Output\TESTVI~1.ASS")
PreFetch(6)
# setting output fps to 23.976fps
AssumeFPS(24000,1001)
#  output: color sampling YV12@8, matrix: bt709, scantyp: progressive, luminance scale: limited
return last

the only thing that I not is that TextSub is used.

Looking at the 'NoSynth' debug output, using:

"C:\Program Files\Hybrid\64bit\mencoder.exe" -lavdopts threads=8 -really-quiet -subcp UTF-8 -sub "C:\Users\Alex\Videos\Hybrid\Output\TESTVI~1.ASS" -sid 6 -ass -of rawvideo -o - -ovc raw -noskip -vf scale,format=i420,scale=1280:720,ass,scale,format=i420 -sws 10 -nosound -mc 0 "C:\Users\Alex\Videos\Hybrid\Input\TESTVIDEO.mkv" | "C:\Program Files\Hybrid\64bit\x264.exe" --preset slower --profile baseline --level 3.1 --ref 5 --sync-lookahead 18 --partitions i4x4,p4x4,p8x8,b8x8 --merange 24 --vbv-maxrate 42000 --vbv-bufsize 14000 --sar 1:1 --no-deblock --non-deterministic --range tv --colormatrix bt709 --demuxer raw --input-res 1280x720 --input-csp i420 --input-range tv --input-depth 8 --fps 24000/1001 --output-depth 8 --output "C:\Users\Alex\Videos\Hybrid\Temp\2022-04-11@04_19_36_1610_05.264" -

the runs for 26589 (of 35037) frames and then the decoder aborts with '-1073741819' which is an access violation.

-> So my guess is that either:

• something is interfering with the communication between decoder and encoder
  
• hardware issues (system is overclocked or general heat/memory issues)
  
• some issue with the source or subtitles around frame 26589
  

Do you use any other anti virus software than Windows Defender?
(if you do try whether, setting an exception for the Hybrid folder and it subfolders or better temporarily uninstalling the software fixes the issue.)


Cu Selur