Mobile API UI mock-up with videos for Web Page

I am trying to create a Mobile APP UI mock-up having videos and put it on a website home page like in the link below.

Xiaohanshu Home Page

I was able to create the mock-up in Adobe After Effect but for converting it to HTML compatible I used Bodymovin plugin. Unfortunately, it does not support videos but only images. I am kind of stuck now how to use videos in app UI mock and able to embed it in HTML. Any idea how this was done in the website link above. Highly appreciate if any suggestions.