Writing & StyleStyle guide

Writing Audio Descriptions for Important Visual Content

Writing Audio Descriptions for Important Visual Content records a distinct W3C-supported accessibility writing task while keeping implementation mechanics outside the writing guidance.

Quick answer

Describe the important visual information that the existing audio does not convey, such as actions, scene changes, expressions, and necessary on-screen text.

Key details

Core IssueW3C WAI says audio description should explain visual information needed to understand video content, including important actions, scene changes, and on-screen text.
Registerweb accessibility and interface content

Important caveats

Scope Boundary

Describe what is needed for understanding rather than narrating every visible detail; content already conveyed in the main audio does not need to be repeated.

Further guidance

Content

Write concise descriptions of the visual information that is necessary to understand what is happening, placing them where they can fit naturally around the existing audio.

Purpose

Purposeful description gives people who cannot see the video access to information that dialogue and sound alone do not communicate.

Sources and evidence

Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.

  1. Description of Visual Information (opens in a new tab)World Wide Web Consortium (W3C) · W3C WAI guidance for writing descriptions of visual information needed to understand video.

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