Pad ace step 1.5 ref audio if not long enough. (#12341)

comfyanonymous · web-flow · commit 17e7df43d19b · 2026-02-07T00:02:11.000-05:00
diff --git a/comfy/model_base.py b/comfy/model_base.py
@@ -1577,6 +1577,10 @@ def extra_conds(self, **kwargs):
             else:
                 out['is_covers'] = comfy.conds.CONDConstant(False)
 
+        if refer_audio.shape[2] < noise.shape[2]:
+            pad = comfy.ldm.ace.ace_step15.get_silence_latent(noise.shape[2], device)
+            refer_audio = torch.cat([refer_audio.to(pad), pad[:, :, refer_audio.shape[2]:]], dim=2)
+
         out['refer_audio'] = comfy.conds.CONDRegular(refer_audio)
         return out
 
