Greasy Fork

I wish it would display next to the video time instead of on it's own line

Use instead the earlier script: https://greasyfork.org/scripts/19120-youtube-remaining-time

It's supposed to always be displayed on the page.

Sorry for late response, I didn't know how to open this thread. Thank you for the clarification, I understand the purpose of this extension now. Thanks for the link to the other one!