Fixed mypy issue in VideoClips

Author: vfdev-5

torchvision/datasets/video_utils.py

@@ -136,7 +136,7 @@ def __init__(
 
     def _compute_frame_pts(self) -> None:
         self.video_pts = []
-        self.video_fps = []
+        self.video_fps: List[int] = []
 
         # strategy: use a DataLoader to parallelize read_video_timestamps
         # so need to create a dummy dataset first
@@ -160,6 +160,8 @@ def _compute_frame_pts(self) -> None:
                 self.video_pts.extend(clips)
                 self.video_fps.extend(fps)
 
+        print("self.video_fps:", [type(i) for i in self.video_fps])
+
     def _init_from_metadata(self, metadata: Dict[str, Any]) -> None:
         self.video_paths = metadata["video_paths"]
         assert len(self.video_paths) == len(metadata["video_pts"])