This is a plugin meant for Jekyll.
Example use:
Easily embed a YouTube video. Just drop this file in your _plugins
directory.
{% youtube oHg5SJYRHA0 %}
You can also specify a height and width. If you do not, it defaults to 560 x 420.
{% youtube oHg5SJYRHA0 500 400 %}
This didn't work for me. The argument variables were all blank. I also had problems with maruku processing the generated markup.
I needed Vimeo support added to it so I went ahead and forked and got my mods working. Here they are if anyone else wants to take a look. https://gist.github.com/ryanburnette/6107142