When the device is connected incorrectly or the device driver is installed improperly,
you may see the ‘Failed to initialize the video capture device’ error message in the Device Recording Mode.
"Failed to initialize the video capture device." - How to solve this problem
1. Check if there is a conflict with another webcam/capture program.
In Windows, only one webcam/capture device can be used in one program. If another webcam (or capture program) is running, you must first close the webcam (or capture program) before running Bandicam.
2. Download and install the latest graphics card driver from the graphics card manufacturer's website.