Michael on "[Zerif Pro]"

I uploaded an MP4 video for my background but it so zoomed in it's unrecognizable! It looks terrible!

How can I fix this please?

My site: ebookbump.com

It seems like the video is cut in half, why is this happening?

this forum here only supports 'zerif lite' https://wordpress.org/themes/zerif-lite/

please ask the developer of the pro theme for help;
https://codex.wordpress.org/Forum_Welcome#Commercial_Products