hey guys,
just wanted to say thank you so much for starting this discussion. i googled a lengthy question and this is what popped up! i was having the same trouble with the youtube embed issue that you guys described above. i was able to view the embed via pc, but on ipad2 and iphone5… it wasn’t showing up. i am using responsive… so i don’t think it was just an issue with weaver, because i also experienced the same issue. i do believe the main issue has to do with the sizing of the video when you embed it… the plugins or custom settings on the respective wordpress blogs/websites try to resize it to a format that doesn’t work. in a nutshell, i found if you will just copy and paste the actual URL from the youtube video, it works just fine. works on pc, iphone5, and ipad2 for me and that was the one change i made.
TL;DR — simply copy and paste the URL from the youtube video onto the site! good luck and hope that helped.
-mike