removed [] from return

main.py

@@ -50,7 +50,7 @@ def show_tracking(video_content, vis_out_dir, model):
 
         # Prepare to save video
         #out_file = os.path.join(vis_out_dir, "track.mp4")
-        out_file = "track.mp4"
+        out_file = ["track.mp4"]
         print("[INFO]: TRACK", out_file)
 
         fourcc = cv2.VideoWriter_fourcc(*"mp4v")  # Codec for MP4 video
@@ -103,7 +103,7 @@ def infer(video, check):
 
         if i == "Detect and track":
             #continue
-            [out_file] = show_tracking(video, vis_out_dir, inferencer)
+            out_file = show_tracking(video, vis_out_dir, inferencer)
 
         else:
             out_file = poses(inferencer, video, vis_out_dir)