Commercial video content often uses High-bandwidth Digital Content Protection (HDCP) to ensure copyright protection. Content protected by HDCP will not be displayed using ClickShare and only a black screen will be shown, for details see KB 4379. Typically the content is displayed correctly as soon as you stop sharing the protected content again.
If you are playing a regular video and experiencing issues, it is possible that the video player is using overlays, which prevents the ClickShare application from screen scraping the image. Disable the overlay setting in your video player or try another video player and the video will be shown on the central display. Please refer to the manual of the video player for instructions on how to change this setting.
