22 lines
723 B
Python
22 lines
723 B
Python
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from moviepy.decorators import apply_to_audio, apply_to_mask
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def speedx(clip, factor = None, final_duration=None):
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"""
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Returns a clip playing the current clip but at a speed multiplied
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by ``factor``. Instead of factor one can indicate the desired
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``final_duration`` of the clip, and the factor will be automatically
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computed.
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The same effect is applied to the clip's audio and mask if any.
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"""
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if final_duration:
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factor = 1.0* clip.duration / final_duration
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newclip = clip.fl_time(lambda t: factor * t, apply_to=['mask', 'audio'])
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if clip.duration is not None:
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newclip = newclip.set_duration(1.0 * clip.duration / factor)
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return newclip
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