Good afternoon, my name is Sofía Alderete, I´m a computer engineer from Argentina. I have almost 2 years of experience with Vuforia+Unity. I have one android aplicattion based on cloud reco and one part of the application actually do what you need, with the recognizing of a cloud reco target I can bring and play video playback via JSON file.... Well, I mean I can do this job in a timely manner cause I already have my own code for videoplayback and cloud reco working together.
Regards!