Best Practice 1.9 – Provide description for prerecorded videos (Baseline level*)
When a video with audio is viewed using a mobile application, a person with visual impairment can hear the audio but cannot see the picture. As a result, that person can have access to part of the information only. In fact, it should provide additional description that explains what is happening in the video. To a higher level of accessibility, an audio description of the video should be provided to describe the actions, characters, scene changes, and on-screen text that are important but are not described or spoken out in the main sound track.
* To attain the Baseline level, mobile applications are required to adopt any of the best practices in 1.9, 1.10 and 1.11.
Before Rectification![]() This example shows a plain video without any alternative means to aid persons with visual impairment in understanding the content of the video in full. |
After Rectification![]() An additional description that explains what is taking place in the video should be provided so that persons with visual impairment can understand the video contents by using screen readers. |
W3C WCAG Reference: 1.2.1 Audio-only and Video-only (Prerecorded), 1.2.5 Audio Description