Tip: Make sure it's the YouTube.com link with nothing past the video ID (like "&" for example) and not the youtu.be link.
For Vimeo:
Code:
[vimeo]94710125[/vimeo]
Result:
[vimeo]94710125[/vimeo]
Tip: You Just need the video ID for this code (example: Was taken from https://vimeo.com/94710125). Tip: Include Vimeo link to your post because the embedding doesn't work for mobile users.