Facebook has added live video to their Facebook Messenger app.
Casey Newton at The Verge writes:

Facebook Messenger has had a FaceTime-like video chat option since May 2015. But the company wants to encourage even more video usage of its platform, and so today it’s introducing a lightweight add-on to your text messages that lets you share video from a window inside the chat app. “Video calling is still relatively new, and until recently, reserved for special occasions,” the company said in a blog post. “Instant video is a reflection of the ubiquity of video — we simply expect to have that ability in real-time, all the time.”