Google's new Duo app features high-quality video, previews of incoming calls, and an intentionally simple interface. No fancy video filters, overlays, or face swapping is involved here, as Google intentionally built Duo to be as simple as possible. And aside from the call quality and Knock Knock, there really aren't many standout features. But at least there's no signup involved, since the service relies only on your phone number to identify you. For starters, it's yet another app that you'll have to convince your friends to install, which is always a struggle. Google hopes this will make the service more engaging for users, but that remains to be seen.īut, of course, this isn't a perfect app. This was made possible by Google's own WebRTC video framework, which can maintain HD quality even when you only have a 2G data connection.īut Duo has another trick up its sleeve with a feature called "Knock Knock." When you receive a video call, you'll see a live feed of the other user's camera before you even answer, giving you a glimpse of the conversation to come. It's packed to the brim with software optimizations that will keep the feed going in crystal-clear HD quality, to an extent that has only been seen with Apple's exclusive FaceTime app in the past. Duo's headlining feature is definitely the video quality-perhaps the best you'll see with a cross-platform mobile app.
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