video_frames fix: apparently we got smart and stopped counting the .m…

…etadata.json file in num_rows

processors/visualisation/video_frames.py

@@ -89,7 +89,7 @@ def process(self):
 		output_directory = staging_area.joinpath('frames')
 		output_directory.mkdir(exist_ok=True)
 
-		total_possible_videos = self.source_dataset.num_rows - 1  # for the metadata file that is included in archives
+		total_possible_videos = self.source_dataset.num_rows
 		processed_videos = 0
 
 		self.dataset.update_status("Extracting video frames")