I tend to agree with the first part of your last reply, but I can’t think of anything else I changed.
Copying the old embed code; that method worked with the rest of them. Can I hire you to take a look inside? haha
I replaced the file and tried to add a new video… no thumbnail still.
Earlier today I went back to 1.7.6 and it still didn’t work. 🙁
The video theme I’m working with has ‘video pages’… much like posts.