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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