Audio Descriptions for Media in Canvas or MiVideo MediaSpace

Environment

Canvas
MiVideo MediaSpace (Kaltura)

Issue

What is an audio description (AD) and how can it be added to videos in Canvas and MiVideo Mediaspace? 

Media must be uploaded to your My Media in Canvas or Mediaspace to use this service. 

Closed captions and language translation captions are separate services; see the Order Captions for Media and Order Language Translation Captions for Media articles.

Resolution

What is an Audio Description (AD)?

Audio description is a verbal portrayal of visual content in media. AD can assist blind and visually impaired people by describing key visual content necessary for comprehension of the media.

Listening to AD in the Kaltura Media Player

Videos in Canvas and MiVideo Mediaspace with audio description have a separate audio track for the AD which combines the existing audio with a spoken description of onscreen action where no other speech exists. Only one audio track can be played at a time in the Kaltura media player. Audio tracks can be changed in the Kaltura media player by clicking on the musical note icon in the lower right corner of the player and selecting a different track.

Example video with Professional AD

Sing A Song of Six Pants Audio Description Example

Professional human-generated AD

Professional audio descriptions can be ordered with a shortcode. Please complete the MiVideo Captioning, Transcription & Audio Descriptions Request Form.

Currently, Kaltura contracts with 3PlayMedia to generate audio descriptions for videos. This is a premium fee-based service. It is not free. 

  • AD by 3PlayMedia is only generated during gaps in audio (not including music or other background noise); for best results your recording should have pauses in the dialog.
  • The AD script is created by a professional AD captioner. 
  • The AD voice is a male sounding machine-generated voice.
  • AD is returned as a second audio track that is a combination of the original audio and the description. 
  • Price is based on turnaround time. See the ordering form for estimated costs. 

Ordering Professional AD

  • Media must be uploaded to your My Media in Canvas or Mediaspace to use this service.
  • AD requests produce a separate audio track.
  • The cost is based on the length of the recording rounded up the next minute (not the number of minutes of audio description created). For example, a recording with a length of 10 minutes and 1 second will be charged for 11 minutes.
  • The recording length can be edited down as necessary, see the Utilizing Video Editor article.
  • The ITS-MiVideo team will need a shortcode and authorized signer approval to place the order.
  • The ITS-MiVideo team will email the requester once the order is completed.

User-generated AD

User-generated audio descriptions are not supported by Kaltura, however the ITS-MiVideo team can assist with user-generated AD requests for free. Media must be uploaded to your My Media in Canvas or Mediaspace to use this service. You must create your own voice over audio track to use as the AD and upload the track to your My Media in Canvas or Mediaspace. See the following section for best practices when creating your own AD. Please complete the MiVideo Captioning, Transcription & Audio Descriptions Request Form.

The following video demonstrates how to create a voice over audio track with Adobe Premier Rush. The original video can be split using the scissors button on either side of the voice over so that the audio level can be adjusted in the original clip in sync with the voice over. 
How to Add Voiceover Using Adobe Premiere Rush

The Adobe Creative Cloud suite (including Adobe Premiere and Adobe Premiere Rush) is available for all eligible U-M people at no-cost. See the Adobe Creative Cloud webpage for more details. Training for Adobe Premiere and Adobe Premiere Rush can be found on LinkedIn Learning (available at no cost to all active faculty, staff, and students at the University).

Best practices for creating AD

  • Audio description is a separate audio track with the AD voice over injected into the original audio track; AD audio tracks are not played in conjunction with the original audio track
  • Inject AD only when necessary for the listener to understand important visual detail.
  • Inject AD during gaps in audio (not including music or other background noise); for best results your recording should have pauses in the dialog.
  • Adjust the audio level of the original audio in sync with the voice over.
  • 3PlayMedia website has a list of Quality Audio Description Standards.

Additional Information

Details

Article ID: 6629
Created
Wed 10/20/21 4:31 PM
Modified
Thu 11/18/21 10:36 AM