I've installed Python 3.7 and Vapoursynth library from this link.
Now I'm trying to open a .mp4 video, but there's an attribute error:
AttributeError: No attribute with the name lsmas exists. Did you mistype a plugin namespace?
How do I solve this problem?
As of March 2019, latest compiled FFMS2 and L-SMASH source plugins for VapourSynth for Windows, by Wolfberry you can download from https://forum.doom9.org/showthread.php?t=176198
unzip those and put ffmsindex.exe, ffms2.dll and vslsmashsource.dll into your C:\Program Files (x86)\VapourSynth\plugins64 directory. Then , you can use these lines in your Vapoursynth scripts to load videos,
from vapoursynth import core
clip = core.ffms2.Source(videofile) #for mkv extensions
clip = core.lsmas.LibavSMASHSource(videofile) # for mp4, mov extensions
clip = core.lsmas.LWLibavSource(videofile) #for ts, m2ts, mts