playing a video during live webinar

Hi, @coolled123,

It's easy, actually.  First, I'll refer you to this Zoom Support article:

https://support.zoom.us/hc/en-us/articles/360051673592-Sharing-a-recorded-video-with-sound-during-your-meeting

Note the prerequisites: 4-core CPU, 1.5Mbps up and down Internet connection, and only MOV or MP4 files (with the H.264 codec, which most are).

Here's the steps, assuming you are already in a meeting:

1. Click the green Share Screen button.
   
2. On the pop-up window, click the Advanced tab:
   
3. Click on the Video option:
   
4. Note that Share Sound and Optimize for Video Clip are automatically enabled:
   
5. Now click the blue Share button.  Note: You are not yet sharing your screen; whatever the attendees were seeing.. they're still seeing.
   
6. In the Open dialog box that comes up, select the video you want to show.  You can navigate to a folder and select the video's thumbnail, or even paste in a path:
   
7. Once you've selected the video, click "Open".  NOTE:  Now your video will be visible to attendees in Share Screen mode.  It will not be playing... only the first frame of the video will be visible.  You will then see the Video Player:
   
   and the usual "I'm in screen sharing mode" green-and-red floating menu bar somewhere on your screen:
   
8. Adjust the volume as needed, then click the Play button when you're ready for the video to start:
   
9. The video player controls hide after a few seconds; they will re-appear when you hover over the window.  You can pause, move the slider forward and backward, and adjust the volume.  Your attendees will see the video in full-screen mode, like any other screen share; no need for you to expand the player to "full screen".
10. When done, you can click the X in the upper right of the player to stop screen sharing; or you can locate the floating green-and-red menu bar and click Stop Share, or if appropriate click the green New Share button to initiate another Share Screen... you can even call up another video to play!

Here's a VERY IMPORTANT note:  Practice this in a test meeting in advance!  Every video should be played in the Video Player.  Just because you can play a video in some other player does not guarantee that the Zoom Video Player will play it successfully.  Don't be surprised in the middle of a meeting... be surprised a few days before, so you have time to recover!

I've done this whole process many times, and it works successfully -- and I've caught a few videos that I could not play in advance!  If you have any video editing software at all, it's not difficult to re-encode the full video into another format, but you might have to search for a tool to do it if you're not set up with video editing software.  I use Adobe Premiere Pro, and re-encoding is an easy process there.

Good luck!