Some other technical specifications: Videos will play with the sound on by default in the News Feed, as long as your phone’s sound is on. Vertical videos will automatically expand to fill the full screen. Videos can keep playing in a little thumbnail at the bottom of your screen while you browse the News Feed. Facebook intends for its TV app to be a compliment to watching videos on mobile phones and not a Netflix killer, the company’s VP of Partnerships, Dan Rose, said onstage at the Code Media conference Tuesday. Mark Zuckerberg recently described video as a “mega-trend” similar to how mobile phones contributed to Facebook’s early growth. People will use the app to enjoy Facebook videos in a new way. Facebook is expected to become more engaging and more flexible.