A LoRA is a small file of adjustments trained on top of a frozen base model, a method from a 2021 Microsoft paper that is now the usual way to teach an image or video model one face, product or style. For video, a character LoRA is often trained on stills of the person, sometimes with short clips added, and loaded alongside the base model when you generate. It is model-specific. A Wan 2.2 LoRA does nothing for LTX-2.5, and Lightricks' README says plainly that a LoRA only works with the model it was trained on.
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