The official GoPro article on the GoPro website says that it is not possible to control multiple GoPro cameras with the Quik app at the same time. But there is a solution for this problem.
Home Blog
Camera Tools keyboard shortcuts for controlling GoPro cameras
Since version 1.3.2 the mobile (Android, iOS) version of the Camera Tools app supports the following keyboard shortcuts which can be used with a Bluetooth keyboard:
How to enable live preview during recording on GoPro Hero 8, 9, and 10
Starting with the GoPro Hero 8, live preview no longer works during video recording in the GoPro Quik app.
GoPro Quik and GoPro Studio alternatives for macOS, Windows, Android, and iOS
This article describes tools for replacing the GoPro Quik and GoPro Studio software. Both GoPro apps have been discontinued on desktop platforms and do not (properly) work anymore with the latest GoPro models.
Fortunately great alternative apps exist which allow you to use your GoPro from a Mac, desktop PC, and Raspberry Pi. Most tools are also available for Android and iOS.
How to fix GoPro Live Streaming problems
GoPro Hero 7 Black Edition, 8, 9, 10, and Max cameras support live streaming to YouTube, Meta, Twitch, OBS Studio, Mona, and other RTMP servers with the Live Streamer app. This article describes common problems and fixes which can happen during live streaming with GoPro cameras.
How to get Protune back on GoPro cameras
One frequent GoPro Protune question we get is:
How do I get Protune back on my GoPro Camera?
Protune is an advanced feature available for all GoPro Hero Black Edition models, as well as the GoPro Hero Session, GoPro Fusion, and GoPro Max 360° cameras. Protune for example allows you to adjust:
How to control GoPro Hero cameras from your Apple Watch
Sometimes the GoPro camera is located at difficult to reach positions so that it cannot be controlled directly. The classical way for controlling the camera in such situations is through an app (e.g. Camera Tools for iOS/Android). This again has the disadvantage that we have to eventually pull out the smartphone, unlock it, and start the app.
How to control multiple GoPro cameras simultaneously
This tutorial describes how to control multiple GoPro Hero cameras using Apple iOS, Android, macOS, Raspberry Pi, or Microsoft Windows.
How to setup a RTMP server for multi GoPro streaming on macOS
This article describes how to setup a RTMP streaming server on Apple macOS. The streaming server can then be used to stream from multiple sources, such as multiple GoPro Hero cameras.
How to setup a RTMP server for multi GoPro streaming on Windows
This article describes how to setup a RTMP streaming server on Windows. The streaming server can then be used to stream from multiple sources, such as multiple GoPro Hero cameras.