[Feature] TAEHV Support with WAN weights [TAEW2_2]

[spiderolsen]

Feature Summary

TAEHV Support with Wan weights for faster Video Decoding.

Detailed Description

Hello,

Since you`ve already implemented TAESD for faster SD latent decoding, please have a look at TAEHV. It uses a similar technique like TAESD but only for video models.
Maybe this could decrease VRAM usage and time consumption for wan_vae computation.

Results seem promising.

taew2_2_demo_compressed.mp4

Here the link to their repo:
https://github.com/madebyollin/taehv
https://github.com/madebyollin/taehv/blob/main/safetensors/taew2_2.safetensors

Kind regards

Alternatives you considered

No response

Additional context

No response

[CarlGao4]

It is currently developing in #937