Update detect_strongsort.py

detect_strongsort.py

@@ -185,6 +185,7 @@ def run_strongsort(
 
         # Apply NMS
         with dt[2]:
+            pred = pred[0][1] if isinstance(pred[0], list) else pred[0]  # single model or ensemble
             pred = non_max_suppression(pred, conf_thres, iou_thres, classes, agnostic_nms, max_det=max_det)
         sdt[2] += time_sync() - t3