[jrand0m]

it is not an issue. your browser will use protocol(http or https) it used to load page where you have embedded the video.

[vram22]

>it is not an issue.

Was an issue for me, otherwise I would not have said so, obviously. See my above comment where I said "not without it". Also, I'm aware of this:

http://jugad2.blogspot.in/2014/03/the-protocol-relative-url-...

So it may have been some other issue, but was an issue, for sure.