Looking to Customize YouTube Video Embeds

This might help. On the YouTube video page, choose Share, then choose Embed, then choose Show More. Remove checks in boxes for “Show Player controls” and “Show Video Title and Player Actions.” Choose largest given width size or custom size that is equal to or slightly greater than your div container width. Copy the code. Paste the code into your post, then change the width number to width=”100%” and adjust the given height number until it works well on preview post. (You need an absolute height number. Setting height to “auto” or to a percentage won’t work.)

(No experience with autoplay.)