Add video as possible output

[mlduff]

I have noticed a few recipes (bestrecipes, bigoven, bongeats to name a few) that support the video field from the schema.org Recipe schema.

I was wondering if it would be okay if I added this as a possible output, possibly just returning the URL to the video (or a list of URLs)? The use case I can think of is for meal planner/recipe collation apps, it would be nice to be able to access this content.