Code:
>>> import vapoursynth as vs
>>> core = vs.get_core()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "vapoursynth.pyx", line 777, in vapoursynth.get_core (src\cython\vapoursy
nth.c:12897)
vapoursynth.Error: 'Internal environment id not set. Was get_core() called from
a filter callback?'
>>>
what's 'Internal environment id' ?