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Video Description & the Digital

Transition

QUICK FACTS

Video descriptions are a way to inform people who are blind or have other vision

disabilities of what is happening on the television screen. Video description is the

insertion of verbal descriptions about the setting and/or action in a program

when information about these visual elements is not contained in the audio

portion of the program. These descriptions supplement the regular audio track of

the program.

Some programming has contained video descriptions for a number of years. At

present, video descriptions are available through the secondary audio

programming (SAP) channel on an analog stereo TV set or VCR.

In July 2000, the FCC adopted rules to make television more accessible to people

with vision disabilities by mandating that a certain amount of programming

contain video description. These rules took effect in April 2002, but were vacated

by a federal court in November 2002. As a result, video description is not

required. Nevertheless, some programming providers voluntarily continue to

provide video descriptions.

Also, the requirement in Section 79.2 of the FCC’s rules that emergency

information provided on television be accessible to individuals who have vision

disabilities is still in place. This means that broadcasters must orally describe any

emergency information that is shown on the screen (e.g., weather map showing

tornadoes) and must accompany any emergency information that is not orally

described (i.e., information presented in a crawl or scroll) with an aural tone

which instructs individuals with vision disabilities to turn to a radio or another

source for more information.

With digital television, broadcasters have more audio channels on which to

provide video description. Because digital television encodes audio in a different

manner than the encoding used in analog television, digital television does not

utilize a SAP channel to transmit video descriptions. The digital television

standards provide for two types of main audio service and six types of associated

services, including associated services for people with vision disabilities.

Website(s):

www.dtv.gov

DTV Website

http://www.fcc.gov/cgb/consumerfacts/dtvvideodescription.html

Factsheet

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Zentech DF2000 Guía para resolver problemas Pagina 42