To increase accessibility and enhance the student experience within Canvas, we have enabled machine-generated captions for all uploaded course media. After you create or upload new media to Kaltura the captions will be automatically added within 5-30 minutes.
The machine-generated captions are editable and we encourage you to review and refine: How to Edit Machine Generated Captions.
If you do not want machine-generated captions enabled: How to Disable Closed-Captions.