Kaltura MediaSpace offers the ability to create and upload extended audio descriptions. Extended audio descriptions pause the video and provide extra narration explaining important visual details that are not spoken in the original audio track.
An extended audio description (EAD) pauses the video because there isn’t enough natural silence in the original audio track. This is distinct from an audio description track that serves the same purpose without pausing the video.
Reference the following instructions to manually create and add an extended audio description to a MediaSpace video.
VTT or WebVTT stands for Web Video Text Tracks. This file type contains chunks of data that are time-aligned with a video or audience resource. For example, VTT files can be used for captions, subtitles, chapters, audio descriptions, or metadata.
The VTT file will tell the video player where to pause the video and what will be read aloud during each pause. Once the text is read, the video will resume until it reaches the timestamp for the next description.
Example:
WEBVTT00:00:01.020 --> 00:00:02.000A man is seated at a table with 2 children on his right and 2 children on his left. One child is waving his hand in the air while also shaking his head.00:00:04.124 --> 00:00:06.000Another child at the table attempts to get the man's attention.
Each caption entry should contain timestamps for when the video will pause to read the audio description.
WEBVTT TIMESTAMP PARTSHH:MM:SS.mmm --> HH:MM:SS.mmmHH = Hours (00–99)MM = Minutes (00–59)SS = Seconds (00–59)mmm = Milliseconds (000–999)--> = Separator between start and end times
Save with a .vtt file extension.
Go to the video in MediaSpace, select the Actions menu, and select Edit.
Once uploaded, an extended audio description can be edited in the MediaSpace Editor. The option to edit an extended audio description is available in the Captions tab of the Edit Video page.