The easiest way to add automated captions to a video is by uploading it to Microsoft Stream.
The accuracy of the automated captions will vary and will almost certainly require editing. You will need to allow two to three times the length of the video to edit your captions. Captions which have errors or have not been checked are not compliant with accessibility regulations.
Captions can be edited in Microsoft Stream or in UCL MediaCentral, once you have uploaded your video.