On Tuesday, GoPro and Periscope announced an update to the Periscope app would allow users to stream from a GoPro action camera as well as the iPhone's camera.

The potential for streaming from a smaller camera intended to be used in extreme situations is limitless. And that's pretty exciting.

To use the new feature, you'll need to own a Hero 4 Silver or Hero 4 Black and an iPhone.

• To begin a GoPro live-stream using Periscope, start by turning on your camera, setting it to video mode, and enabling Wi-Fi.
• Connect your iPhone to the camera's Wi-Fi network, then launch the Periscope app.
• Next, tap on the broadcast button along the bottom of the screen. A new GoPro-inspired icon will be present; tap on it to use the camera's stream.
• Give your Periscope a name, set your privacy options, and begin streaming as you normally would.

Once the streaming begins, you can switch between the iPhone's camera and the GoPro with a double-tap on the screen. Alternatively, a new lock button at the top of the screen makes it possible to put your iPhone in your pocket without fear of ending the stream. Your GoPro will save a video of the stream to the microSD card, which you can then post to YouTube or share through your preferred social channels after the fact.

One other important thing to note: Since your iPhone is connected to the GoPro's Wi-Fi network, your stream will be broadcast over a cellular connection. Meaning, be aware of how long you're streaming and the amount of data it's going to use if you're not on an unlimited data plan.