Captions
If a presentation contains video or audio files, include alternative ways for users to perceive and understand content using captions, transcripts, and/or audio descriptions. This is especially important for users with visual, audio, or cognitive barriers. Alternatives such as captions also benefit people who prefer to read subtitles or foreign language speakers.
Note: if embedding a video with captions that have already been included, captions might be able to be turned on by toggling the CC icon in the video during the presentation.
It's possible to add your own captions with Microsoft PowerPoint, but the process may be different depending on which version of PowerPoint you are using. Reference Microsoft's article on how to add captions or subtitles for media using PowerPoint.
Automatic captioning during a live presentation is possible to setup using Microsoft 365 for PowerPoint. Reference Microsoft's article on how to present with real-time, automatic captions.
Reference: Make your PowerPoint presentations accessible to people with disabilities by Microsoft.
