PORTLAND - Multi-screen media measurement and research company Rentrak today announced a multi-year agreement with Montreal-based Stingray Digital for the content provider's new music video-on-demand (VOD) service launching on Rogers Cable.Stingray recently launched its "Galaxie Music Videos on Demand" service on Rogers Cable and Rentrak will provide Stingray with detailed data and insights “to help the content provider define and grow their business model,” says the press release.Additionally, Rentrak sees the expansion of the video-on-demand platform in Canada as a strong revenue growth opportunity. "Video-on-demand is expanding in Canada as operators and content providers are working in concert to develop...