generated from thinkode/modelRepository
28 lines
729 B
Python
28 lines
729 B
Python
from dataclasses import dataclass
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from moviepy.Clip import Clip
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from moviepy.Effect import Effect
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from moviepy.video.fx.FadeIn import FadeIn
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@dataclass
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class CrossFadeIn(Effect):
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"""Makes the clip appear progressively, over ``duration`` seconds.
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Only works when the clip is included in a CompositeVideoClip.
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"""
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duration: float
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def apply(self, clip: Clip) -> Clip:
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"""Apply the effect to the clip."""
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if clip.duration is None:
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raise ValueError("Attribute 'duration' not set")
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if clip.mask is None:
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clip = clip.with_mask()
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clip.mask.duration = clip.duration
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clip.mask = clip.mask.with_effects([FadeIn(self.duration)])
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return clip
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