29 lines
859 B
Python
29 lines
859 B
Python
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import numpy as np
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from moviepy.decorators import requires_duration
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@requires_duration
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def fadeout(clip, duration, final_color=None):
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"""
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Makes the clip progressively fade to some color (black by default),
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over ``duration`` seconds at the end of the clip. Can be used for
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masks too, where the final color must be a number between 0 and 1.
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For cross-fading (progressive appearance or disappearance of a clip
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over another clip, see ``composition.crossfade``
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"""
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if final_color is None:
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final_color = 0 if clip.ismask else [0,0,0]
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final_color = np.array(final_color)
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def fl(gf, t):
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if (clip.duration-t)>=duration:
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return gf(t)
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else:
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fading = 1.0 * (clip.duration - t) / duration
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return fading*gf(t) + (1-fading)*final_color
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return clip.fl(fl)
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