8.2 WCAG 2.1 Success Criterion 1.2.1 − Audio-only and Video-only (Prerecorded)
Make prerecorded audio or video accessible by providing alternatives that present essentially the same information to people who cannot access the original piece. For example, visually impaired persons cannot access video and need a way to get this information.
Before Rectification
The example shows a video on its own. This will not be accessible for visually impaired persons.
After Rectification
The video has included an option to download a transcript of the video that visually impaired persons will be able to listen to using screen readers.
WCAG 2.1 Reference:
https://www.w3.org/WAI/WCAG21/Understanding/audio-only-and-video-only-prerecorded
