Update app.py

app.py

@@ -37,7 +37,7 @@ def do_interpolation(frame1, frame2, times_to_interpolate, interpolator):
         util.interpolate_recursively_from_files(
             input_frames, times_to_interpolate, interpolator))
     with tempfile.NamedTemporaryFile(delete=True, suffix=".mp4") as temp_file:
-        mediapy.write_video(temp_file.name, frames, fps=12)
+        mediapy.write_video(temp_file.name, frames, fps=12) # I'm not sure about the 12 FPS here, seems pretty arbitrary
         return temp_file.name
         
 def get_frames(video_in, step, name):