Playing a MP4 without a user having to press play

Looking on how to have a MP4 file play without a user having to press play.
I want a forced play.
Also, I downloaded the .DOC for Sydney Pro and it comes to me as a .XML, I cannot read this.

Hi,

Thank you for contacting us. I am happy to help with your queries.

I am sorry, I can’t get you correctly. Can you please explain in details the issues you’re experiencing? If possilbe, please share the link to the page you need help.

Adding, it would be better if you could share some screenshots to better illustrate the issues. So I can help you in a better way.

Regards,
Kharis
aThemes Support