Embed Vimeo iFrame In Design ePub

Hi there

I am creating an ePub using latest version of In Design (Mac). I am wanting to embed an iframe to play video in several places within the book. The book is quite large and I simply do not want to add more MB with videos.

I have sucessfully created and embedded an iFrame to play You Tube videos. However when I attempt Vimeo I am receiving the following error when I export for ePub.

HTML pageitem : 1 may fail epub validation

Consequently the video does not appear or play in iBooks.

The embed code (that works) for You Tube is;

<iframe width="100%" height="100%" src="https://www.youtube.com/embed/2Bv_Hh79zQg?controls=0" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>

The embed code for Vimeo is;

<div style="padding:56.25% 0 0 0;position:relative;"><iframe src="https://player.vimeo.com/video/460863922?title=0&portrait=0" style="position:absolute;top:0;left:0;width:100%;height:100%;" frameborder="0" allow="autoplay; fullscreen" allowfullscreen></iframe></div><script src="https://player.vimeo.com/api/player.js"></script>

It creates an error.

I have edited the Vimeo script to;

<iframe width="100%" height="100%" src="https://player.vimeo.com/video/460863922?

autoplay=1&title=0&portrait=0" controls=0" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" ></iframe>

The Vimeo video plays sucessfully in the In Design preview but does not allow ePub export without the error.

I am not a coding person. Would appreciate any help please. Really appreciated.