LongVie2:
Source project: https://huggingface.co/Vchitect/LongVie2
LongVie2_attn_layers_bf16.safetensors replaces base I2V model's attention layers, can be used as extra_model, this ensures the full weights of the original.
longvie2_attn_layers_lora_rank_64_bf16.safetensors This is a LoRA extracted from the attention layer diff, slightly weaker effect than full weights but functional.
Use either of those, not both.
LongVie2_dual_controller_controlnet_bf16.safetensor is the controlnet model weights, loaded as extra_model in WanVideoWrapper and used with Add Dual Control Embeds -node