Provide an alternative to video-only and audio-only content.
Introduction
Users who have difficulty with hearing and/or vision may need assistance with audio-only or video-only content, such as an audio file, embedded podcast or silent film.
As the popularity of podcasting continues to grow, making these accessible is an important part of a presenters job –  in conjunction with

1.2.1 – Audio-only and Video-only (Pre-recorded) (Level A)Read more

Provide text alternatives for non-text content that serves the same purpose.
Introduction
Users who cannot see images, hear audio or perceive video benefit from having text alternatives in their place. These can be read by the user or voiced by assistive technology.

Text alternatives must therefore provide the same information as the non-text content.
How to Pass Non-text Content

1.1.1 – Non-text Content (Level A)Read more