initial commit and version 1.0

moviepy/video/fx/TimeMirror.py

@@ -0,0 +1,20 @@
+from dataclasses import dataclass
+
+from moviepy.Clip import Clip
+from moviepy.Effect import Effect
+
+
+@dataclass
+class TimeMirror(Effect):
+    """
+    Returns a clip that plays the current clip backwards.
+    The clip must have its ``duration`` attribute set.
+    The same effect is applied to the clip's audio and mask if any.
+    """
+
+    def apply(self, clip: Clip) -> Clip:
+        """Apply the effect to the clip."""
+        if clip.duration is None:
+            raise ValueError("Attribute 'duration' not set")
+
+        return clip[::-1]