Name: Enter a name for live source.

Device: Please select the video device from the list that you wish to add a video source.

Line: Please select the audio device from the list that you wish to add an audio source.

Frame Rate: Please define a frame-rate value for added video source.

Position: The (X) Start and (Y) End sets the position of the video wall among all other screens. It is calculated based on the total resolution of all the connected screens in pixel.

Size: Please define a resolution for the added video source. (The added video source will play within the borders of the defined positions)

Keep Aspect Ratio: If this option is selected, the aspect ratio of the video file won't be changed.

Crop: If this option is selected, the added video file will be cropped to the defined values.