Why am I unable to speed up videos with MoviePy? There are two versions MultiplySpeed and speedx, but I couldn't get either working. When I use MutiplySpeed below, I receive the error:
Exception has occurred:
AttributeError 'MultiplySpeed' object has no attribute 'write_videofile'.
from moviepy import *
import moviepy.video.fx as vfx
from moviepy.video.fx import MultiplySpeed
# Load the video
clip = VideoFileClip(r"xxx.mp4")
clip = MultiplySpeed(2)
clip.write_videofile("output_fast.mp4", codec="libx264")
Based on documentation you have to apply() it on clip
clip = MultiplySpeed(2).apply(clip)
Based on source code you may also use with_effects() on clip
clip = clip.with_effects([MultiplySpeed(2)])