Speaker language identified in audio descriptions

Supplemental requirement

When more than one language is spoken in audio content, the language spoken by each speaker is identified in all audio descriptions.

Except when words are used incidentally.

Procedure

For each audio description that includes multiple languages:

Check that part(s) using a language different from the original language is programmatically determined in the audio description.

Expected results

audio: live or recorded sound signal
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.
content: information, sensory experience and interactions conveyed
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.