try and find out why da failure

wagtailvideos/models.py

@@ -115,7 +115,7 @@ class AbstractVideo(CollectionMember, TagSearchable):
 
         file_path = self.file.path
         try:
-            show_format = subprocess.check_output(['ffprobe', '-i', file_path, '-show_format', '-v', 'quiet'])
+            show_format = subprocess.check_output(['ffprobe', '-i', file_path, '-show_format'])
             show_format = show_format.decode("utf-8")
             # show_format comes out in key=value pairs seperated by newlines
             duration = re.findall(r'([duration^=]+)=([^=]+)(?:\n|$)', show_format)[0][1]