By Kevin Gray MIAMI (Reuters) – Vevo, the online music video hub that is a joint venture of two of the worlds biggest music labels, has seen a nearly 50 percent increase in the number of music videos streamed each month from its platform, the companys top executive said on Tuesday. The company, which is controlled by Universal Music Group and Sony Music Entertainment, hit a monthly average of nearly 6 billion views in December, a 46 percent rise from a year earlier, said Rio Caraeff, the chief executive officer. Mobile and tablet and television are where the majority of the views are happening. A growing number of people watch music videos from the platform on smartphones, tablets or web-connected TVs using Apple TV, Roku and XBox devices. Google Inc is a minority stakeholder in New York-based Vevo, which was founded in 2009.