24 lines
703 B
Python
24 lines
703 B
Python
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import numpy as np
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from moviepy.decorators import audio_video_fx, requires_duration
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@audio_video_fx
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@requires_duration
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def audio_fadeout(clip, duration):
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""" Return a sound clip where the sound fades out progressively
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over ``duration`` seconds at the end of the clip. """
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def fading(gf,t):
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gft = gf(t)
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if np.isscalar(t):
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factor = min(1.0 * (clip.duration - t) / duration, 1)
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factor = np.array([factor,factor])
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else:
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factor = np.minimum( 1.0 * (clip.duration - t) / duration, 1)
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factor = np.vstack([factor,factor]).T
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return factor * gft
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return clip.fl(fading, keep_duration = True)
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