It's easy to start a live Instagram video, but how do your friends know you're broadcasting if they don't catch the usual alert? As of now, you can ping them yourself. Instagram has added the option to send live videos as direct messages, so you can ensure pals tune in when you're livestreaming your vacation. You can also send a video as a viewer if there's a must-see stream. This only works while videos are live, we'd note, so recipients will have to check replays like everyone else.