Fix WanVACEPipeline to allow prompt to be None and skip encoding step #12251
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DN6
approved these changes
Sep 24, 2025
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What does this PR do?
Fixes #11821
The current implementation of the WanVACEPipeline.call method seems to prevent the use of more than a single prompt. However the check is also preventing the ability to pass
prompt=Noneand instead directly provide theprompt_embedsto skip the text encoding step. This is especially useful when working with limited hardware where the text encoder and tokenizer could free some memory before inference.@yiyixuxu and @asomoza