[Need Recommendation for Video Generation] - Business Physical Product explainer Videos with human

My Client has asked to make product explainer videos through AI, they saw it somewhere and now they're asking me to do the same.

They need a person to explain the Veteniary Medicine products to farmers.

I would be open for both free and paid.

I haven't used any other AI tools other than Claude and ChatGPT.

Can you guys suggest me which platforms are the best for this?

Cheers