Audio out of sync using StaxRip and VapourSynth

[ryangarfield]

Hey All,
I had been using StaxRip to encode several VHS tapes and was using AviSynth/AVISource/QTGMC and audio was in sync. I was then informed that my resulting videos had jittery video and after some trial and error found that by switching to VapourSynth, the video looked much better but my audio was out of sync again (had issues first with AviSynth before discovering that AVISource fixed the issue). If I use AVISource with VapourSynth, I get an error message...is that not supposed to happen and should I be able to use that combo or are they just not supposed to work together? If I use anything else, encoding works but audio is out of sync. Initial captures with AmaRecTV are fine with audio, as were using the previous combo of AviSynth/AVISource. Any clarity on the issue is greatly appreciated!

[_Al_]

What does that error message say?

[ryangarfield]

Script Error

Python exception: No attribute with the name avisource exists. Did you mistype a plugin namespace or forget to install a plugin?

Traceback (most recent call last):
File "src\\cython\\vapoursynth.pyx", line 3233, in vapoursynth._vpy_evaluate
File "src\\cython\\vapoursynth.pyx", line 3234, in vapoursynth._vpy_evaluate
File "D:\RAW CAPTURES\amarec(20240215-1117)-00.00.00.000-05.52.59.091_temp\amarec(20240215-1117)-00.00.00.000-05.52.59.091.vpy", line 37, in <module>
clip = core.avisource.AVISource(r"D:\RAW CAPTURES\amarec(20240215-1117)-00.00.00.000-05.52.59.091.avi")
^^^^^^^^^^^^^^
File "src\\cython\\vapoursynth.pyx", line 2741, in vapoursynth._CoreProxy.__getattr__
File "src\\cython\\vapoursynth.pyx", line 2564, in vapoursynth.Core.__getattr__
AttributeError: No attribute with the name avisource exists. Did you mistype a plugin namespace or forget to install a plugin?

[_Al_]

It looks staxrip does not have avisource.dll in place wherever its vapoursynth is loading dll's from.
Quick google search says that in Staxrip directory it is in \Apps\Plugins , so you might take a look in there.
Or staxrip has some Apps window where it could be managed.
But I was under impression that avisource plugin comes with vapoursynth, maybe not, maybe it used to, maybe that portable version does not have it, not sure now, would have to investigate.