How do I call a shortcode from the template?

I have a custom field in my geodirectory called video. This custom field asks for the unique code from a youtube video url.
I understand that I can call this information to a page by using the dynamics widget and the geodirectory shortcode %%video%%
That’s great, however,
I need to check this field before rendering it to the page.
I wanted to write code with the template that will check to make sure the video field has a value, as in
if (isset(%%video%%)) {
do something
}
Problem is %%video%% does not work in the php code of a template (didn’t expect it to)
So my question is, how do I get the value of a field from within the template.
Thanks