Page Title: Fabryka oczyszczaczy powietrza Olansi, producent maszyn do wody wodorowej
August 07, 2021 01:08

audio must have alternative

Actions

Severity Action
no actions

Details

Rule ID Audio 1
Definition audio elements must have caption or text transcription of the audio content.
Purpose
  • Captions and text transcripts provide a means for people cannot hear the audio to understand the audio content.
  • Some types of learning disabilities affect speech perception, captions and text transcripts provide an alternative way to understand the audio content.
  • When the language of the audio is different than the native language of the listener, captions and text transcripts support the listner in understanding the audio content.
WCAG Success Criteria

1.2.1 Audio-only and Video-only (Prerecorded) (Level A, Primary Success Criterion)

Rule Category Audio/Video
Scope Element
Target Resources audio elements
  • audio
  • track
Techniques
  • Use the track element to add captioning to the audio content.
  • Use WebVTT to encode the timed stamped captioning information for the audio content.
  • Use aria-describedby to reference a text transcript of the audio content.
Manual Checks
  • When captions are enabled on the media player, check to make sure the captions visible.
  • If there is a caption make sure the captions accurately represents the audio content.
  • If there is a text transcript make sure the transcript accurately represents the audio 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.