ZaoVideoSource4cam is a program that impositions the video captured by 4 cameras in the shape of the character for rice field and sends it to the cloud side.

■ Build and Installation

Follow the build instructions to obtain video-source-4cam/ZaoVideoSource4cam. To replace the pre-built binary installed by the SDK setup, run the following command.

$ sudo install -m 755 -o root -g root video-source-4cam/ZaoVideoSource4cam /usr/local/bin

After the SDK is set up, ZaoVideoSourceWebcam will start automatically by default, To enable ZaoVideoSource4cam to start automatically, you will need to change the configuration. Please refer to Zao SDK for Jetson User's Guide for details.

■ Command line options

ZaoVideoSource4cam -c <conf-path>
```
 
* ``-c <conf-path>`` : specify a configuration file.
  * * 

format of the configuration file for the sample program ZaoVideoSource4cam

■ Main operations

Type Ctrl-C to stop acquisition and transmission.

■ Limitations

Each camera device must be present when the process starts
If a device is disconnected during operation, it will not be recognized again by the process when reconnected