Here's another AI tool you can play around with. It's a new AI video generating app. What's awesome with this website is that you don't need to login and you don't need credits to generate videos since its new.
I think it's still in beta testing that's why it's free to use.

The downside is your browser should have an auto translate option since the default language of the site is in Chinese.

Check it out here:
https://hailuoai.com/video

Have fun! XD