Section 508 and WCAG require that multimedia presentations have synchronized captions that are presented with the audio, video or animation. Along with this requirement, you must take additional steps to ensure that audio, on its own, or as part of a video or animation, does not conflict with a screen reader’s verbal identification of objects.
You can add closed captioning to mp3, .m4a, and .flv audio objects and .flv, .mp4, and .f4v video objects.
Use the following instructions for providing closed captioning for audio files:
Add a mp3, .m4a, and .flv audio object to your title.
See also: Adding an existing audio file
Access the audio’s properties.
Clear the Auto Start check box.
See also: Automatically starting an audio
Within the properties of the audio, import a caption file. This file must be of the XML file format.
The audio player’s controls can be accessed with use of a keyboard only, and as the specified captions are displayed within the video, a screen reader will announce what is displayed.
Use the following instructions for providing closed captioning for video files:
Add a .flv, .mp4, and .f4v video object to your title.
See also: Adding an existing video file
Access the video’s properties.
Clear the Auto Start check box.
See also: Automatically starting a video
Within the properties of the video, import a caption file. This file must be of the XML file format.
The video player’s controls can be accessed with use of a keyboard only, and as the specified captions are displayed within the video, a screen reader will announce what is displayed.
| See also: | Working with closed-captioned audio Working with closed-captioned video |
© Copyright eLearning Brothers 2021