fix film bugs

main.py

@@ -1225,7 +1225,7 @@ def run_interpolate_frames(frame1, frame2, times_to_interp):
     film.setup()
 
     thumb_size = (512, 512)
-    width, height = image.size
+    width, height = frame1.size
     frame1.thumbnail(thumb_size)
     frame2.thumbnail(thumb_size)