Page Title: PG SLOT 999 PGSLOT.ORG
July 25, 2021 07:38

embed for video must have audio description


Severity Action
no actions


Rule ID Video 9
Definition embed elements used for prerecorded video with synchronized audio (i.e. a movie, archived lecture) must have audio description of the video content.
  • Text and audio descriptions provide a means for people who cannot see the video to understand the video content.
  • Some types of learning disabilities affect visual processing, text and audio descriptions provide an alternative way to understand the video content.
  • This rule covers the requirements of both WCAG 2.0 Success Criteria 1.2.3 and 1.2.5, that is why a text description of the video content cannot be used to satisfy this rule.
WCAG Success Criteria

1.2.3 Audio Description or Media Alternative (Prerecorded) (Level A, Primary Success Criterion)

Rule Category Audio/Video
Scope Element
Target Resources embed elements
  • embed
  • Use the video element instead of the embed element for video only content, since the video element provides better support for audio description tracks.
  • Include an audio track in the video that describes the video content.
  • Use aria-describedby attribute to point to a text description of the video only content.
Manual Checks
  • When audio descriptions are enabled on the media player, check to make sure the audio description can be heard.
  • If there is a audio description make sure the description accurately describes the video content.
  • If there is a text description make sure the description accurately describes the video content.
Informational Links

Element Results

Element Identifier Result Element Position Message

Column Definitions

Element Identifier
Information about the element associated with the result.
The information typically includes the tag name, accessible name or other information related to the rule requirements.
"Page" means that the result applied to the page. For example, the rule "One main landmark on the page" is a page level rule.
Element Position
The element position is based on the DOM order of elements in the page.
The element position maybe useful in helping to locate a specific element on the page evaluated (e.g smaller numbers are typically toward the beginning of a page and larger numbers typically toward the end of a page).
Element position 1 is the first element.
The highest element position is the last element.
Element position values for most rule/page results will not be consecutive since a rule only applies to a sub set of elements found on a page.