You can use a GoPro HERO4 Black or Silver as a webcam or for real-time capture to a computer. But it's not quite as simple as just plugging your camera in with a USB cable. Here's a guide on how to do it.
Controlling a single GoPro camera remotely is pretty straightforward. The most obvious way to do that is to use the GoPro mobile app. But what if you want to control more than one camera? For that, you'll need to use a dedicated remote. Here's an overview of how it works.
Formatting the GoPro's SD card frees up space. But it also gets the card ready for use and keeps the filesystem healthy and minimizes the risk of errors. Here are the various ways to do it on different GoPro models.
While there are several areas of overlap comparing the HERO4 Silver with the Session, there are also some key differences. Here's a detailed breakdown of how they compare in terms of features, capabilities, and performance.
Here are some practical recommendations for SD cards for the GoPro HERO4 Black and Silver. Not every microSD card you can find will work--you'll need a card that's fast enough to keep up with the high-bitrate recording that these cameras are capable of.