fix

docs/_static/code/user_guide/loading/masks.py

@@ -2,10 +2,10 @@
 import numpy as np
 
 # Random RGB noise image of 200x100
-makeframe = lambda t: np.random.rand(100, 200)
+frame_function = lambda t: np.random.rand(100, 200)
 
 # To define the VideoClip as a mask, just pass parameter is_mask as True
-maskclip1 = VideoClip(makeframe, duration=4, is_mask=True)  # A random noise mask
+maskclip1 = VideoClip(frame_function, duration=4, is_mask=True)  # A random noise mask
 maskclip2 = ImageClip("example_mask.jpg", is_mask=True)  # A fixed mask as jpeg
 maskclip3 = VideoFileClip("example_mask.mp4", is_mask=True)  # A video as a mask
 

moviepy/video/VideoClip.py

@@ -850,15 +850,15 @@ def with_mask(self, mask: Union["VideoClip", str] = "auto"):
         Returns a copy of the VideoClip with the mask attribute set to
         ``mask``, which must be a greyscale (values in 0-1) VideoClip.
         """
-        if mask == "auto":  
+        if mask == "auto":
             if self.has_constant_size:
                 mask = ColorClip(self.size, 1.0, is_mask=True)
                 return self.with_mask(mask.with_duration(self.duration))
             else:
                 def frame_function(t):
                     return np.ones(self.get_frame(t).shape[:2], dtype=float)
 
-        mask = VideoClip(is_mask=True, frame_function=frame_function)
+                mask = VideoClip(is_mask=True, frame_function=frame_function)
         self.mask = mask
 
     @outplace