#1. How do you make the video embeds show the image instead of a black screen when embedded on a WordPress page?
The solution to this specific problem is detailed below:
I ran into this problem on the spinrecordsboise.com WordPress website. I fixed it by DEACTIVATING the WP YouTube Lyte plugin. I don't even remember why I installed this plugin so I guess I don't need it anymore!
The broader point that I learned from this is:
If something is acting strange on one of the WordPress sites that I built check the plugins installed on that site make sure they are all up to date and deactivate any that might relate to the issue to see if this fixes the issue.