Convert custom VAEs during legacy checkpoint loading #3010
Merged
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When a legacy checkpoint model is loaded via --convert_ckpt and its models.yaml stanza refers to a custom VAE path (using the 'vae:' key), the custom VAE will be converted and used within the diffusers model. Otherwise the VAE contained within the legacy model will be used.
Note that the checkpoint import functions in the CLI or Web UIs continue to default to the standard stabilityai/sd-vae-ft-mse VAE. This can be fixed after the fact by editing VAE key using either the CLI or Web UI.
Fixes issue [bug]: Can't load custom CKPT/PT VAE #2917