small teak

mot-metrics.py

@@ -173,7 +173,7 @@ def calculate(predictions, references, max_iou: float = 0.5):
         raise ValueError("The frame number in the references should be a positive integer")
 
 
-    num_frames = max(np_references[:, 0].max(), np_predictions[:, 0].max())
+    num_frames = int(max(np_references[:, 0].max(), np_predictions[:, 0].max()))
 
     acc = mm.MOTAccumulator(auto_id=True)
     for i in range(1, num_frames+1):