Audio and Video in your App - Get "A" certified
In last week's post (Input Forms Accessiblity - Get "A" certified) , we started to analyze what our web apps need to reach level A of accessibility certification.
Now we'll analyze how to make the audio and video in your web app accessible.
Alternatives allow your content to be easily duplicated or re-purposed, which can make your application more popular and available to a wider audience.
For time-based media (media where info unfolds over time - Eg.audio and video), we provide alternatives for the following audience:
If you have to interact with the video (Click here to continue/Choose an answer), you must provide a keyboard accessible way to interact, and include it in the transcript or text summary of the video
Now we'll analyze how to make the audio and video in your web app accessible.
Why make Time Based Media more Accessible
Alternatives allow your content to be easily duplicated or re-purposed, which can make your application more popular and available to a wider audience.
For time-based media (media where info unfolds over time - Eg.audio and video), we provide alternatives for the following audience:
- Visually disabled users
- Users who have less knowledge of the topic
- Hearing disabled users
- User’s with time limitations
How to make Time Based Media more Accessible
- Link to a text transcript containing the content below - right beside the link to a video/audio page
OR - Link to an audio MP3 - right beside the link to a video page. The audio MP3 should be a mix of the audio extracted from the video and the content below
OR - Add captions to the video
Content of transcripts, captions and supplementary audio
- Identify the name of the person who is speaking
- Identify if the speaker is a person from the audience or the main speaker
- Identify if the statement is a question or a part of the main content
- Mention if there's applause
- Mention if there's laughter
- Mention when music is being played
- Identify non-vocal music:
- Title
- Movement
- Composer
- Tempo
- Mood
- Transcribe the lyrics of vocal music
- Identify non-vocal music:
- Note other significant sounds that are part of the recording
- Description of what’s being show in the video
- Actions
- Characters
- Scene changes
- On-screen text
Note: If there is already a text transcript of a video/audio, captions are not required
Special Cases
Interaction with a Video
If you have to interact with the video (Click here to continue/Choose an answer), you must provide a keyboard accessible way to interact, and include it in the transcript or text summary of the video
Video tutorials (without Audio)
- Make sure any text in the video is placed in a transcript
- If there is no text in the video, add a brief summary of what is shown in the video
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