Page 49 - GiGW3

5. Guidelines

(d) Sensory: If non-text content is primarily intended to create a specific sensory presented to users, then it is implemented in a way that it can be ignored by assistive Statement: Captions are provided for all pre-recorded audio Statement: Captions are provided for all live audio content Government organisation a

experience, then text alternatives at least provide descriptive identification of the non-text technology (by using blank alt attribute). content in synchronised media, except when the media is a in synchronised media. Developer action: Develop
https://www.w3.org/WAI/WC
content; Reference: WCAG 2.1 - 1.1.1AG21/Understanding/non-text-content.html visual or auditory format
(e) CAPTCHA: If the purpose of non-text content is to confirm that content is being Evaluator action: The evaluator will test it manually and by using the accessibility extension to media alternative for text and is clearly labelled as such when the content is read
Benefits: Enables people who are deaf or hard of hearing to watch real-time presentations.
accessed by a person rather than a computer, then text alternatives that identify and browser/ accessibility plug-in/web accessibility tool to check the conformity of this checkpoint. Government organisation action: The government organisation must provide captions for live sheet provided by the aut
describe the purpose of the non-text content are provided and alternative forms of Benefit: This enables people who are deaf or hard of hearing to watch synchronised media audio content. the required fields are di
CAPTCHA using output modes for different types of sensory perception are provided to Statement: For pre-recorded audio-only and pre-recorded presentations. Developer action: Provide provision to publish captions (*). The instructions for
accommodate different disabilities; and video-only media, the following are true, except when the audio Government organisation action: The government organisations must create captions to provide Reference: WCAG 2.1 - 1.2.4 and marked with an asteri
(f) Decoration, Formatting, Invisible: If non-text content is pure decoration, is used only for the part of the content available via the audio track. Captions not only include dialogue but identify Reference: WCAG 2.1 - 1.3

visual formatting, or is not presented to users, then it is implemented in a way that it can be or video is a media alternative for text and is clearly who is speaking and include non-speech information conveyed through sound, including Evaluator action: The evaluator will test it manually to check the conformity of this checkpoint. Evaluator action: The eva
ignored by assistive technology. labelled as such: 5.2.2 meaningful sound effects. browser/accessibility plu
Benefit: Conformity makes information conveyed by non-text content accessible through the use Developer action: Ensure that the captions are available with audio content. Statement: Audio description is provided for all of this checkpoint.

of a text alternative. For example, a person who cannot see a picture can have the text alternative Reference: WCAG 2.1 - 1.2.2 pre-recorded video content in synchronised media.
(a) Pre-recorded Audio-only: An alternative for time-based media is provided that
read aloud using synthesised speech. A person who cannot hear an audio file can have the text Evaluator action: The evaluator will test the it manually to check the conformity of this checkpoint. Statement: When the seque
presents equivalent information for pre-recorded audio-only content; and
alternative displayed so that he or she can read it.
(b) Pre-recorded Video-only: Either an alternative for time-based media or an audio track Benefits: Provides people who are blind or visually impaired access to the visual information in a affects its meaning, a co
Government organisation action: A meaningful explanatory text equivalent must be specified for Statement: An alternative for time-based media or audio
is provided that presents equivalent information for pre-recorded video-only content. synchronised media presentation. During existing pauses in dialogue, audio description provides
images and other non-text content. The description should summarise the content or purpose of description of the pre-recorded video content is provided information about actions, characters, scene changes and on-screen text that are important and programmatically determin

the image. For example, to use the description ‘Picture’ to explain a graphic does not serve any
he Success criteria under this section have been adopted purpose. Benefit: The intent of this Success Criterion is to make information conveyed by pre-recorded for synchronised media, except when the media is a are not described or spoken in the main soundtrack. Benefits: This helps peopl

from W3C Web content accessibility guidelines Developer action: For images text equivalent can be provided by using the ALT attribute. The ALT audio-only and pre-recorded video-only content available to all users. Alternatives for time-based media alternative for text and is clearly labelled as such. Government organisation action: Provide Audio description of pre-recorded video content meaning evident in the se
Developer action: Provide provision to publish audio description
media that are text based make information accessible because text can be rendered through any
(https://www.w3.org/TR/WCAG21/). Developers are advised text for an image is displayed before the image is fully downloaded. It is the main source of image sensory modality (for example, visual, auditory or tactile) to match the needs of the user. Reference: WCAG 2.1 - 1.2.5 when the content is prese
information for users of text-only browsers, users of browsers with graphics turned off and users Benefit: provides people who are blind or visually impaired access to the visual information in a the CSS is turned off or
to refer to the W3C website for the complete description Government organisation action: Create the alternate for time-based media, i.e, transcript in Evaluator action: The evaluator will test it manually a check the conformity of this checkpoint.
who are sight impaired. The following situations are exceptions: synchronised media presentation Government organisation a
and techniques to meet the success criteria. (a) If the non-text content is a control or accepts input e.g., a submit button then it must case audio only and transcript or audio track in case of video only content. Captions are not
needed when the synchronised media is, itself, an alternate presentation of information that is also Government organisation action: The government organisations must provide audio description Statement: Information, structure and relationships Developer action: Provide
have a name describing the purpose of the control; of the video content. The audio description augments the audio portion of the presentation with Note: Developers must kee
presented via text on the Web page conveyed through presentation can be programmatically
Statement: All non-text content that is presented to the user has a (b) If the non-text content is time-based media (audio/video) then the text equivalent Developer action: Make provision to provide alternatives for time-based media. the information needed when the video portion is not available. Alternatively, all of the information its meaning. Two independ
provides a descriptive identification of the same; in the synchronised media (both visual and auditory) may be provided in text form. If all of the determined or are available in text. any sequence without affe
https://www.w3.org/WAI/WCAG21/Understanding/audio-only-and-video-only-prerecorded.html
text alternative that serves the equivalent purpose, except (c) If non-text content is a test or exercise that would be invalid if presented in text, then Reference: WCAG 2.1 - 1.2.1 information in the video track is already provided in the audio track, no audio description is may be placed in any sequ
for the situations listed below: text alternatives at least provide descriptive identification of the non-text content; Evaluator action: The evaluator will test it manually to check the conformity of this checkpoint. necessary. Benefits: Sighted users perceive structure and relationships through various visual cues present sequence. Tables and orde

(d) If non-text content is primarily intended to create a specific sensory experience, Developer action: Developer must provide provision for publishing the alternative for time-based on a page (page headings are in a larger and bold font; list items are preceded by a bullet; form be clear that providing a

(a) Controls, Input: If non-text content is a control or accepts user input, then it has a name then text alternatives at least provide descriptive identification of the non-text content; media or audio description of the pre-recorded video content fields may be positioned as groups that share text labels; a different background colour may be be more than one order th
that describes its purpose (Refer to Success Criterion 4.1.2 for additional requirements for (e) CAPTCHA: If the purpose of non-text content is to confirm that content is being Reference: WCAG 2.1 - 1.2.3 used to indicate related items and so on). However, visually challenged users cannot take Reference: WCAG 2.1 - 1.3
controls and content that accepts user input); accessed by a person rather than a computer, then text alternatives that identify and Evaluator action: The evaluator will test the it manually to check the conformity of this checkpoint. advantage of these cues. It must be ensured that these information and relationships are Evaluator action: The eva
(b) Time-Based Media: If non-text content is time-based media, then text alternatives at describe the purpose of the non-text content are provided and alternative forms of preserved even when the presentation format changes. (For example, when the content is read by browser/accessibility plu

least provide descriptive identification of the non-text content (Refer to Guideline 1.2 for CAPTCHA using output modes for different types of sensory perception are provided to a screen reader or CSS is turned off or replaced). of this checkpoint.
additional requirements for media); accommodate different disabilities; and
(f) If non-text content is pure decoration, is used only for visual formatting, or is not

49