For a video, I go to the Playback ribbon and set the Start option to Automatically and usually check the Play Full Screen box. I insert each image or video using the Link-to-File insertion option (keeping media from getting stored within the PowerPoint file itself and making the file size huge). Using PowerPoint animations, I can control exactly what the audience sees in Slideshow mode without my audience ever having to see the player itself nor my mouse clicking on player controls, for example. When showing images and video, I almost always do so as part of a PowerPoint presentation. My approach to avoiding gray rectangles and making the user experience relatively seamless is two-fold. This works perfectly for me, because we don't use chat or other features when playing videos. I avoid any use of the cursor or of Zoom features while I am playing a video.
I make sure that all other windows are never displayed on top of the video on my screen while the video is running, and I keep the cursor at the extreme lower right so it is not seen. In fact, with Optimization off, you can even minimize all windows and/or return to the desktop, and the participants continue to see the shared window only.įor the Zoom meetings I host, I want the best experience for my participants, so I set up muting and other options the way I want, then I show the video in a video player, share the player output, and optimize it. Then Zoom simply sends the shared window, again and again (at 6 to 30 frames per second, depending on source and destination bandwidth) to the participants and ignores other windows. So the solution appears to be pretty simple: just turn OFF the "optimize for showing video" option. So you see the topmost shared window AND any windows that are on top of it! Graying out the window prevents participants from seeing whatever the host is doing, for security. Instead of simply sending the video being shown directly to the participants, Zoom intercepts the hardware to capture the data as it is being displayed.
Why should participants be able to see other windows, you ask? Well, it's simple and complicated at the same time.
The solid dark gray boxes are clearly a security mechanism by Zoom to prevent participants from seeing other windows on top of the shared window. I figured it out myself, with some experimentation, running as host and participant in the same meeting.
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