Insert and play a video file from your computer - Microsoft Support
https://support.microsoft.com/en-us/office/insert-and-play-a-video-file-from-your-computer-f3fcbd3e-5f86-4320-8aea-31bff480ed02
On the Insert tab, click the arrow under Video, and then click Video on my PC. In the Insert Video box, click the file that you want to link to, click the down arrow next to the Insert button, and then click Link to File. PowerPoint 2016 and newer versions support the playback of video with multiple audio tracks.
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