Youtube recently upgraded and it's messing with the youtube plugins or whatever makes videos work in SMF.
The code is:
[youtube]yourvideourlhere[/youtube]
However, you'll only be able to see the video on your browser if you hit the button that "Load Unsafe Content" to load. Otherwise it'll be blank. Chrome and Firefox have it. Chrome has a little shield on the right side on the address bar. I think that Firefox has it on the left side?
In order to get the videos to work, remove the "
s" in the link. You need the regular link so it'll look like this:
[youtube]http://www.youtube.com/watch?v=1612_Y7N9x4[/youtube]
The original link is:
What I like to do is this:
[youtube]http://www.youtube.com/watch?v=1612_Y7N9x4[/youtube]
[youtube]https://www.youtube.com/watch?v=1612_Y7N9x4[/youtube]
Put both options in and let people do whatever is easiest for them.
Is there a fix? I honestly don't know. But hopefully this helps someone.