diff --git a/dataset_dataloading/video2dataset/video2dataset/data_reader.py b/dataset_dataloading/video2dataset/video2dataset/data_reader.py
index 24ca10e..ec6a47f 100755
--- a/dataset_dataloading/video2dataset/video2dataset/data_reader.py
+++ b/dataset_dataloading/video2dataset/video2dataset/data_reader.py
@@ -179,9 +179,10 @@ def __call__(self, url):
         modality_paths = {}
 
         video_format_string = (
-            f"wv*[height>={self.video_size}][ext=mp4]{'[codec=avc1]' if self.specify_codec else ''}{'+ba' if self.download_audio else ''}/"
-            f"w[height>={self.video_size}][ext=mp4]{'[codec=avc1]' if self.specify_codec else ''}{'+ba' if self.download_audio else ''}/"
-            f"bv/b[ext=mp4]{'[codec=avc1]' if self.specify_codec else ''}{'+ba' if self.download_audio else ''}"
+            f"wv*[height>={self.video_size}][ext=mp4]{'[codec=avc1]' if self.specify_codec else ''}{'+ba[ext=mp4]' if self.download_audio else ''}/"
+            f"w[height>={self.video_size}][ext=mp4]{'[codec=avc1]' if self.specify_codec else ''}{'+ba[ext=mp4]' if self.download_audio else ''}/"
+            f"bv[ext=mp4]{'[codec=avc1]' if self.specify_codec else ''}{'+ba[ext=mp4]' if self.download_audio else ''}/"
+            f"b[ext=mp4]{'[codec=avc1]' if self.specify_codec else ''}{'+ba[ext=mp4]' if self.download_audio else ''}"
         )
         audio_fmt_string = (
             f"wa[asr>={self.audio_rate}][ext=m4a] / ba[ext=m4a]" if self.audio_rate > 0 else "ba[ext=m4a]"