Time-Based Media 1.2

Understanding Guideline 1.2 opens in new window

Examples

Instructional Video Clip

A video clip shows how to use a product. The caption should read:

				
<p>(music) The travel tumbler has many uses including...</p>
				
			
Instructional Manual with Corresponding Video Clip

A video clip shows how to use a product. The caption should read:

An instruction manual containing a description of a part and its necessary orientation is accompanied by a synchronized media clip showing the part in its correct orientation.

No captions are provided for the synchronized media clip.

Acceptance Criteria
  1. People who are deaf or have a hearing loss can access the auditory information in the synchronized media content through captions.
  2. Captions are not needed when the synchronized media is, itself, an alternate presentation of information that is also presented via text on the Web page.
  3. Captions not only include dialogue, but identify who is speaking and include non-speech information conveyed through sound, including meaningful sound effects.
Notes

Captions are provided for all prerecorded audio content in synchronized media, except when the media is a media alternative for text and is clearly labeled as such.

Examples

Audio Clip

Audio clip link is given with a link to the transcript immediately following.

				
<a href="#">Listen to KLT's speech at the holiday party</a>
<a href="#">Transcript of KLT's speech at the holiday party</a>
				
			
Audio Recording to an Event
				
<a href="#">Listen to the 4imprint Q&A</a>
<a href="#">Descriptive transcript is placed here. Includes who is speaking and if there is laughter/questions/applause/etc.</a>
				
			
Instructional Animated gif

Animated gif that shows how to do something with instructions typed out below it. Alt text is brief and refers to the tutorial text for more information.

				
<img src="animation.gif" alt="How to place an order with instructions given below." />
<p>Instructions typed out here</p>
				
			
Acceptance Criteria
  1. View the video-only content while referring to the alternative for time-based media.
  2. Check that the information in the transcript includes the same information that is in the video-only presentation.
  3. If the video includes multiple people or characters, check that the transcript identifies which person or character is associated with each action described.
  4. Check that at least one of the following is true:
    • The transcript itself can be programmatically determined from the text alternative for the video-only content.
    • The transcript is referred to from the programmatically determined text alternative for the video-only content.
    • If the alternate version(s) are on a separate page, check for the availability of link(s) to allow the user to get to the other versions.
Notes

For prerecorded audio-only and prerecorded video-only media, the following are true, except when the audio or video is a media alternative for text and is clearly labeled as such.

Prerecorded Audio-only

An alternative for time-based media is provided that presents equivalent information for prerecorded audio-only content.

Prerecorded Video-only

Either an alternative for time-based media or an audio track is provided that presents equivalent information for prerecorded video-only content.

To Top of page