Auto-Focus Camera Usage
1. View Video Devices
ls /dev/video*The result in the image is the result of connecting two CSI cameras and one USB camera: generally, one CSI camera shows one video device, and one USB camera shows two video devices. For the USB camera, choose the newly added /dev/video2 with the smaller number to use it (connecting the USB camera adds the /dev/video2 and /dev/video3 device numbers to the system)
2. GUVCView
GUVCView is open-source software for Linux systems, used to capture and record video and images, mainly for webcam cameras.
2.1. GUVCView Installation
sudo apt update
sudo apt install guvcview -y
2.2. GUVCView Usage
Go to the application menu bar and click the guvcview icon, or enter the launch command in the terminal: select the USB camera; the CSI camera has no preview image
guvcview
3. VLC
VLC media player is a free and open-source multimedia player that supports multiple audio and video formats as well as DVD, audio CD, VCD, and various streaming protocols.
3.1. VLC Installation
sudo apt update
sudo apt install vlc -y
3.2. VLC Usage
Go to the application menu bar and click the VLC media player icon, or enter the launch command in the terminal: select the USB camera; the CSI camera has no preview image
vlc
Select the device number corresponding to the USB camera:
