Videos and images that you want to add to the wall are known as “sources”. Content sources can be captured using dedicated capture or decoding cards or be made available on a local hard drive. These sources can then be placed across single or multiple screens, and the video wall controller handles the required splitting, cropping and drawing of the content in the correct place. Some example source types are; operator workstations, production PCs, set top boxes, media players, IP cameras, pre-recoded videos and webpages.