Provide a second video version complete with audio description
Make sure videos are provided in two versions, one with audio description and one without
Videos usually convey information on both the visual and audio tracks. Users who are blind and listening to dialogues may still struggle with understanding what is happening when important information taking place on the visual track (such as specific actions, characters, scene changes, on-screen text and so on) are not also conveyed on the audio track. While non-sighted users benefit from dialogues, they still need a reliable description of details happening visually, that may influence the storyline, the action or the outcome. This additional information layer can be provided through a second audio track that fills in the blanks whenever possible. Typically, this new layer is added during pauses in dialogues and sound effects, so it does not overlap with the content provided in the main audio track. Because there is only so much content that can thus be squeezed in, the amount of supplementary information that can be added to inform visually impaired users of what is going on is necessarily limited and is often insufficient.
To do so, simply provide a second version of [...]