D12 & D13 - Video/Audio

For Reviewers

There is currently no accessibility tool that can check for accurate captions. That must be done manually. Pick a random spot in the video and watch about 30 seconds to determine if accurate punctuation, capitalization and word matching are present.

Note that transcripts are used for audio files, but are not sufficient for video. An exception would be if the video is nothing more than a person (or group of people) talking, with no on-screen visual content.


What Is "Appropriate Captioning"?craptions be gone!

Many instructors aren't aware that auto-generated captioning (as is found on most YouTube videos) is not sufficient for accessibility. Proper captioning needs punctuation and appropriate word-matching. (If you doubt me, try watching a poorly captioned video with the sound turned off!)

Written transcripts are not an optimal alternative to captions. Imagine trying to watch something while simultaneously trying to read something else. 

Depending on the ownership of the video, there are several options for ensuring the videos an instructor is using in their course have appropriate captioning.

If the instructor/college created the video:

  • use a video-editing tool (e.g., Screencast-o-matic, YouTube) to adjust the captions as needed
    OR
  • submit the video for captioning from 3CMedia (check out the other tab on this page).

If the instructor/college didn't create the video:

  • Amara Links to an external site. offers both open software for captioning 3rd-party educational videos and an archive of videos already captioned by others. (A free account is required.)
  • Add/edit captions using the YouTube "Community Captions" tool Links to an external site.. (Many YouTube users aren't aware of the feature so you may need to request that the owner of the YouTube channel turn it on first.)
  • Do a search on YouTube or Google for whatever search terms are appropriate and then filter for “closed captioned.” (You’ll still have to double-check to make sure the captioning is good enough, but it will cut down on the number of obviously bad choices in your search results. =-)) 

What's the Difference Between Captions and Audio Description?

The short answer is captions provide a text version of dialogue or narrative (for hearing impaired viewers). Audio description is a verbal explanation of what's happening on the screen (for visually impaired viewers).

Here's a nice blog post explaining What Is Audio Description?


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