fix tensor

flash_vstream/serve/demo.py

@@ -71,7 +71,8 @@ class Chat:
             else:
                 sample_pos = all_pos
 
-            patch_images = [Image.fromarray(f) for f in vreader.get_batch(sample_pos).asnumpy()]
+            patch_numpy = vreader.get_batch(sample_pos).asnumpy()
+            patch_images = Image.fromarray(patch_numpy)
             return patch_images
 
     @torch.inference_mode()