wan 2.1 version

[zhw-zhang]

Hi, thank you for your impressive work!

Would it be possible to release a version based on Wan 2.1-1.3B? This would be extremely helpful for academic benchmarking and comparisons.

If a official release isn't feasible, I have specific requirements that necessitate implementing a version on Wan 2.1 1.3B myself. Could you provide some guidance on what I should be careful about?

I am particularly concerned about the hyperparameters $t_{weak}$ and $t_{strong}$. Since Wan 2.1 does not feature the same two-stage (high/low noise) structure as Wan 2.2, how should I approach the trade-off and balancing of these parameters?