VIDIOC_S_INPUT: Device or resource busy

This error message indicates that the requested input source for a video capture device is currently being used by another process or application.

To resolve this issue, you can try the following steps:

1. Close any other applications that may be using the video capture device.
2. Make sure that the video capture device is not being used by any other process or service in the background.
3. Check if any other instance of the video capture device is running and terminate it.
4. Restart the device or the application that is trying to access the video capture device.
5. Try selecting a different input source for the video capture device.

If none of these steps resolve the issue, you may need to consult the device manufacturer's documentation or seek assistance from their support team.