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This page is archived information that is not up-to-date.

Information about EOWG closing is in the 19 September 2024 blog post: Accessibility education and outreach: Another milestone in W3C's 30-year history and evolution.

This Wiki page was edited by participants of the EOWG. It does not necessarily represent consensus and it may have incorrect information or information that is not supported by other Working Group participants, WAI, or W3C. It may also have some very useful information.

Tutorial Outline: Accessible Media

From Education & Outreach

Background

Part of New Tutorials work

  • General requirements for new tutorials:

New Accessibility Tutorials Requirements Analysis

Approach

  • An overview of what to do to make media accessible on the web, including:
    • captions, transcripts, and audio description of video;
    • discussion of manual vs draft automated captions vs human-corrected auto-generated captions.

Status

(DRAFT TUTORIAL PAGE 1) Tutorial Outline: Accessible Media

Accessible Media Concepts

  • Accessibility of media: think multi-modal access to information
    • briefest description of captions, subtitles in other languages, transcripts, audio description
      • "captions are just text, conveyed through markup – text, time codes and positioning -- rest is frosting"
    • concept of quality in accessibility information
  • Technical requirements for accessible media (W3C resources)
    • WCAG 2.0, ATAG 2.0, MAUR
    • transcript vs synchronized captions vs closed described video
    • caption requirements for pre-recorded media vs live-streaming
    • audio descriptions: human-recorded vs text-to-speech (the latter being on-the-fly vs pre-recorded)
    • audio-description requirements for pre-recorded media vs live-streaming
  • Overview of production options
    • Brief discussion of manual vs automated captions vs human-corrected
    • Choice of captioning technologies and formats
    • Brief discussion of audio-description production (broadcast/non-broadcast)
  • Policy requirements for accessible media (non-W3C resources)
    • may depend on country, jurisdiction, times available, etc
    • concept of essentiality in different settings
    • education, workplace, entertainment, etc

Why accessible media matters

  • Need for and rights of access to communication & information
    • why and when different types of accessibility information is important
    • what happens when captions and description is missing
    • why quality matters: captions (draw parallels between poor-quality audio and poor-quality captions)
    • why quality matters: audio descriptions (examples of too little/too much information)
  • Accessible media provisions in W3C resources
    • from WCAG 2.0
    • from ATAG 2.0
    • from MAUR
  • Varied requirements in policy settings
    • Links to "Policy References" (being updated -- check timeline)
  • Auxiliary benefits of captions and description
    • [brief] search, language learning, learning to read, learning disabilities, noisy background, quiet environment, etc

(DRAFT TUTORIAL PAGE 2) Captions: Basic Concepts and Examples

  • Caption concepts
    • including current timed-text format options (mention legacy formats)
    • pre-produced vs live
    • pop-on vs roll-up (vs paint-on?); typical use of each
    • non-speech information
  • Caption examples
    • pop-on, roll-up
  • Caption tools

(DRAFT TUTORIAL PAGE 3) Captions: Auto-Generated Concepts and Examples

  • Auto-generated caption concepts
  • Quality vs speed/convenience (i.e., responsible use of auto-generated captions)
  • Transforming draft auto-generated captions to quality captions (using auto-generated captions merely as a step in the captioning process, not as an end)

(DRAFT TUTORIAL PAGE 4) Captions: Multilingual Captioning and Multilingual Subtitling

  • Captions and Subtitles: concepts
  • Associating multiple caption tracks and subtitles to a single video file

(DRAFT TUTORIAL PAGE 5) Captions: Transcript Concepts and Examples

  • Transcript concepts
  • Transcript examples
  • Transcript tools

(DRAFT TUTORIAL PAGE 6) Audio Description: Concepts and Examples

  • Audio description concepts
    • including human-recorded descriptions, text audio descriptions (both pre-recorded and on-the-fly), timing considerations, quality considerations, format options
    • human-recorded vs text audio descriptions: appropriate use of each
  • Description examples (both human-recorded and text) and tools

(DRAFT TUTORIAL PAGE 7) Supporting Applications and Players for Accessible Media

  • Purpose of ATAG 2.0
    • In what ways can ATAG 2.0 support caption generation
    • Basic expectations for captioning support in authoring tools
  • Player considerations
    • Basic features to look for
    • Features that provide advanced support [link to other resources]

(DRAFT TUTORIAL PAGE 8) Decision Trees for Accessible Media

  • When to use captions vs transcripts vs both
  • When to add audio descriptions
  • Ease of development vs meeting quality objectives
  • Selecting development tools

Change log

Support

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