- Use the "Share Screen" button to start sharing the screen.

- Select the screen to share and select "Optimize for video clip". Make sure that "Share Audio" is also selected.

- Press the "Share" button to start sharing the screen.
- If you already shared a screen before the video clip, you can turn on the "Optimize for video clip" option by selecting "More ..." button.

- Play the video you want in full-screen mode.
- Once the video has been watched, you should disable the "Optimize for video clip" option, as it requires more system capacity than usual.
If you have a Windows or MacOS Zoom app with version 5.4.3 or later and the video you want to play is on your computer and in mp4 or MOV format, the best video distribution is achieved with the video viewer built into Zoom.
- Use the "Share Screen" button to start sharing the screen.
- Go to the "Advanced" tab and select "Video".
- Find the video you want to play and press "Open".

- Play the video on the video player that pops up for participants to see.
Zoom has published a great guide for Optimizing video clip sharing.