Fix path

animate.py

@@ -236,4 +236,4 @@ def create_mp4_with_audio(frames, cv2_images, duration, audio, output_path):
     new_clip.audio = audio  # Naviely append audio without considering the length of the video, could be a problem, no idea, but it works, so I'm not touching it
     new_clip.set_duration(duration)
     new_clip.write_videofile(output_path.as_posix(), audio_codec="aac")
-    return output_path
+    return output_path.as_posix()