Intro

title: "Accessible Media Intro — Why Audio and Video Must Be Accessible" description: "Learn why accessible media is critical for users who are deaf, hard of hearing, blind, or have low vision, and the alternatives required by WCAG." weight: 1 date: 2026-06-28 lastmod: 2026-06-28 tags: [accessibility, media]

Accessible media provides captions, transcripts, audio descriptions, and sign language so all users can access audio and video content.

## What You'll Learn

Why media accessibility matters, the different alternatives required, and WCAG criteria for time-based media.

## Why It Matters

Without captions, deaf users cannot understand video dialogue. Without audio descriptions, blind users miss visual information. At DodaTech, all tutorial videos include captions and transcripts.

## Real-World Use

A deaf user watches a product demo video. Captions show the narrator's speech and identify sound effects. The user understands the product features despite not hearing the audio.

## Media Accessibility Requirements

```mermaid
flowchart LR
  A[Video] --> B[Captions for deaf/hard of hearing]
  A --> C[Audio descriptions for blind/low vision]
  A --> D[Transcript for all users]
  B --> E[Users understand dialogue]
  C --> F[Users understand visual content]
  D --> G[Complete text alternative]

Common Mistakes

1. No captions on video

Deaf users cannot understand video dialogue without captions.

2. Auto-generated captions not reviewed

Auto-captions contain errors. Review and correct before publishing.

3. No audio descriptions

Blind users miss visual information not conveyed through dialogue.

4. Transcript not provided

Transcripts serve as a complete text alternative and benefit all users.

5. Auto-play without controls

Auto-playing video disorients users. Always provide pause controls.

Practice Questions

1. What WCAG criteria apply to video? 1.2.1 (Audio-only and Video-only), 1.2.2 (Captions), 1.2.3 (Audio Description), 1.2.4 (Captions Live), 1.2.5 (Audio Description).

2. What is the difference between captions and subtitles? Captions include audio information (dialogue, sound effects). Subtitles only translate dialogue.

3. Who benefits from transcripts? Deaf, hard of hearing, blind, low vision users, users with slow internet, and users who prefer reading.

Challenge: Find a video on a popular platform. Check if it has captions, audio descriptions, and a transcript. Document what is missing.

FAQ

Mini Project

Find a video on your site or a site you manage. Check if it has captions, audio description, and transcript. Write a plan to add the missing alternatives.

What's Next

Learn about Captions for Video and how to add closed captions to video content.