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Fix WanVACEPipeline to allow prompt to be None and skip encoding step #12251

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Merged
merged 3 commits into from
Sep 24, 2025
Merged

Fix WanVACEPipeline to allow prompt to be None and skip encoding step #12251

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0ec7833
Fixed WanVACEPipeline to allow prompt to be None and skip encoding step
albchim Aug 28, 2025
a9ac96e
Merge remote-tracking branch 'upstream/main' into fix-wan_vace_prompt…
albchim Sep 23, 2025
25f7574
Merge branch 'main' into fix-wan_vace_prompt_embeds
albchim Sep 24, 2025
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2 changes: 1 addition & 1 deletion src/diffusers/pipelines/wan/pipeline_wan_vace.py
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Original file line number Diff line number Diff line change
Expand Up @@ -795,7 +795,7 @@ def __call__(
callback_on_step_end_tensor_inputs = callback_on_step_end.tensor_inputs

# Simplification of implementation for now
if not isinstance(prompt, str):
if prompt is not None and not isinstance(prompt, str):
raise ValueError("Passing a list of prompts is not yet supported. This may be supported in the future.")
if num_videos_per_prompt != 1:
raise ValueError(
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