Audio descriptions usability testing

Assertion

[Title, role, or organization] asserts that:

We have conducted usability testing with users who need audio descriptions, and changes were made to fix or mitigate the issues found.

Information that needs to be included publicly:

title, role, or organization making the assertion (if different from the conformance claim)
date of when the usability testing was conducted
date of assertion (if different from the date of the conformance claim)

Recommended internal documentation (Informative):

This content needs to be written.

audio description: narration added to the soundtrack to describe important visual details that cannot be understood from the main soundtrack alone

For audiovisual media, audio description provides information about actions, characters, scene changes, on-screen text, and other visual content.
Audio description is also sometimes called “video description”, “described video”, “visual description”, or “descriptive narration”.
In standard audio description, narration is added during existing pauses in dialogue. See also extended audio description.
If all important visual information is already provided in the main audio track, no additional audio description track is necessary.
extended audio description: audio description that is added to audiovisual media by pausing the video to allow for additional time to fit in the audio description

This technique is only used when the sense of the video would be lost without the additional audio description and the pauses between dialogue or narration are too short.