why image2video.py still using Wan2_1_VAE?

[LukeLIN-web]

https://github.com/Wan-Video/Wan2.2/blob/81e67351b81197330c9533e7f345233e7702b44a/wan/image2video.py#L24C29-L24C39

[LukeLIN-web]

I download ckpt and ckpt is also cannot compatible with wan2.2vae

[LukeLIN-web]

image2video.py can also input text, so what difference with ti2v.py?
I see, seems have two path, can t and can i