Level 3 - Formats

Described Video

Page Contents

1. What is Described Video?
2. History
3. Example
4. When to use Described Video
5. Linked References and Resources
   

1. What is Described Video?

Described video (also known as descriptive audio) is when all relevant action scenes and on-screen text (such as credits) in video, TV programming, Web-based multi-media or movies is described and read by a narrator.

This additional audio is recorded on a separate audio track which can be made "open" or "closed". When "open," the descriptive audio can be heard by all viewers. When "closed," viewers must turn on the Second Audio Program (S.A.P.) on their TV monitor. This second audio channel is also used for stereo broadcasting.

The extra descriptions are recorded on the second channel between dialogue.

Described video can be time consuming to produce and should therefore be done only by qualified professional writers.

2. History

Described video began in 1985 by the Public Broadcasting System in the U.S. to make television accessible to people who are blind or have seeing disabilities. Canada's major TV networks are increasingly required to include described programming in their prime-time schedules.

A growing number of feature length movies are also available in described video format.

3. Example

Here is an example of described video. Click on the link for the media format of your choice.

Described Video Sample using Windows Media Player
If you do not have Media Player, click here to download it from Microsoft.

Described Video Sample using Real Media
If you do not have Real Media, click here to download it from RealNetworks.

Here is the text transcript of the audio example:

Several people are visible in the picture, in particular, four women in the foreground who are facing the camera. The women are dressed in old fashioned costumes that feature elaborately decorated hats and shawls. The women are holding song sheets and are singing.

(Described Video sample is courtesy of the Canadian Transportation Agency)

4. When to use Described Video

Access for viewers who are blind or have low vision: Described video informs people with abscent or limited vision what is happening on the screen.

Access for viewers unable to see video for any reason: Described video makes video productions fully accessible to people who may only have audio access.

Enhanced messaging: Described video is sometimes used to emphasize certain messages. This is often the case with training videos where the narrator provides detail on the actions of people who are conducting training demonstrations.

Audio for Internet distribution: Not everyone has access to video over the Web. Described video provides a full explanation for users with only audio capability.

5. Linked References and Resources

• Canadian Radio-television and Telecommunications Commission (CRTC)
• CRTC Decision on Voice Print

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