vpy内容：
import vapoursynth as vs
core = vs.get_core()
video = core.lsmas.LibavSMASHSource(source=r'xxxx.mp4')
video.set_output()
--------------------------------------------------------------------------------------
xxxx.mp4是MP4的绝对路径
import vapoursynth as vs
core = vs.get_core()
video = core.lsmas.LibavSMASHSource(source=r'xxxx.mp4')
video.set_output()
--------------------------------------------------------------------------------------
xxxx.mp4是MP4的绝对路径
