Playing a Video File

To Share a Video File with attendees, have the video file ready in your computer.

1. Start or join a Zoom meeting.
2. Click Share Screen  located in your meeting controls.
3. Switch to the Advanced tab, and then select Video
4. Navigate to and select the video you wish to share from your computer, then click Open. 
   The video will now open within Zoom and be visible to attendees. 
5. The sharer will also have the video controls to Play, Pause and slider controls.

When using the video share option, Zoom encodes the video from the file directly and shares it, effectively bypassing some of the limiting factors with standard content sharing.

Guide: https://support.zoom.us/hc/en-us/articles/360051673592