@GrovePIf you have the link to the video then open the video using the link. From the player, over the bottom of the video and click on the line with the arrows to enter fullscreen mode (hit ESC to exit full screen) - see the screenshot below. Each user will have to do this when viewing the video, there is no way to force maximised screen view for all viewers on Stream directly. A workaround if you wanted to do that would be to embed the Stream video(s) in a PowerPoint slide and make the embedded video as large as the slide. Share the PowerPoint presentation in a Team. 