Time Warner Investments has led a $12 million Series B funding round in You.i TV, a Canadian developer of video user interfaces across multiple devices.

With the investment, Timer Warner’s Turner has begun to standardize its application development on the You.i platform. Turner has already worked with You.i for more than a year on the development of new apps for brands including TNT, TBS, Cartoon Network, NBA League Pass and Turner Classic Movies’ forthcoming direct-to-consumer subscription VOD service FilmStruck.

The funding brings You.i TV to $21 million total raised to date. Also participating in the latest round were new investor Vistara Capital Partners and existing backers Kayne Anderson Capital Advisors. You.i TV, founded in 2008, is based in Ottawa, Ontario. The company has about 180 employees.

You.i TV’s multiscreen video-app platform lets content owners build personalized UIs on most major platforms, including smart TVs, mobile devices, internet set-top boxes and gaming consoles, using a single underlying code base for common technology components. Other You.i TV clients include Sony’s Crackle, Rogers Communications’ Shomi SVOD service and Corus Entertainment.

“Delivering video directly to consumers is becoming vital to the media industry, and offering a compelling user interface and app experience is an important piece of this value chain,” Time Warner Investments managing director Scott Levine said in a statement. “We were immediately impressed with the You.i TV products, seeing how they create high-quality, unique branded experiences across multiple device platforms, while powering higher engagement rates with users.” With the investment, Levine will join the You.i TV board.

Other companies in Time Warner Investments’ portfolio include NextVR, Mashable, Krux, FanDuel, Discord and Bustle.