diff --git a/opensora/datasets/datasets.py b/opensora/datasets/datasets.py
index 7229bb57..34a5dcf6 100644
--- a/opensora/datasets/datasets.py
+++ b/opensora/datasets/datasets.py
@@ -152,6 +152,8 @@ def getitem(self, index):
             # Sampling video frames
             video = temporal_random_crop(vframes, num_frames, self.frame_interval)
 
+            video_fps = video_fps // self.frame_interval
+            
             # transform
             transform = get_transforms_video(self.transform_name, (height, width))
             video = transform(video)  # T C H W