UK-based TV leader BSkyB (News - Alert) has poured a $1.9 million equity investment into streaming set-top-box (STB) maker Roku. It’s the second Roku investment for the satellite giant: it put in a big $10 million infusion for the company last July as part of a larger $45 million round led by Sky parent News Corp.

Roku provides over-the-top (OTT) access to around 750 channels in the United States, and offers TV Everywhere to authenticated Time Warner (News - Alert) Cable customers. The money is to “provide financing for Roku's operations and activities,” Sky said vaguely.

And it seems to be coming in handy: Roku has been steadily beefing up its content strategy. For instance, it just announced that PBS and PBS KIDS channels are now available on platform. The PBS channel features videos from popular PBS programs such as NOVA, American Experience, Masterpiece, Nature, Frontline and Antiques Roadshow. Roku users can also stream content from their local PBS station and short, Web-original videos from Webby Award-winning PBS Digital Studios. There’s also the Blank on Blank series, which sets rare audio interviews with celebrities to new animation.

With the arrival of PBS KIDS, junior streamers have access to full-length episodes and clips from a variety of shows including Curious George, Daniel Tiger’s Neighborhood, Dinosaur Train, Super WHY! and The Cat in the Hat Knows a Lot About That!

It also made its debut in Europe last year in the U.K. and Ireland, where it offers 300 channels, including on-demand films and programs from Netflix, as well as BBC iPlayer.

Roku is in the market with Roku 3, Roku 2, Roku LT, new Roku HD players and the Roku Streaming Stick. It announced last month that it 5 millionth Roku streaming player in the U.S. Since it launched in 2008, it has delivered 8 billion streams of video and music to Roku players.

As far as usage, the company said that 25 percent of Roku players stream more than 35 hours per week to a TV.