fix

mvdream/pipeline_mvdream.py

@@ -501,7 +501,7 @@ class MVDreamPipeline(DiffusionPipeline):
 
         multiplier = 2 if do_classifier_free_guidance else 1
         context = torch.cat([prompt_embeds_neg] * actual_num_frames + [prompt_embeds_pos] * actual_num_frames)
-        torch.cat([camera] * multiplier)
+        camera = torch.cat([camera] * multiplier)
 
         if image is not None:
             ip = torch.cat([image_embeds_neg] * actual_num_frames + [image_embeds_pos] * actual_num_frames)