Machine-generated captions are automatically added to media uploaded to Kaltura on or after November 25, 2020. If your media was uploaded before this date and does not have captions, or if you need captions in a different language, follow the steps below to request new captions.
Important: We also recommend requesting new machine-generated captions if your existing captions were generated more than one year ago.
Table of Contents:
Request Machine-Generated Captions
In Canvas, open My Media (Kaltura) from the Global Navigation menu on the left. Look for the My Media button (firework icon).
- Select the checkbox next to the media item for which you want to request captions. You can select multiple media items.
- From the Actions menu, select Caption & Enrich.
- The Request Machine Captions screen will appear.
- Click Submit to send your request. You will receive a confirmation message that your request has been received. The captions will be added to your video when processing is complete.
- If you submit a duplicate request for the same media, Kaltura will display a message indicating that the service has already been requested.
- If you submit a duplicate request for the same media, Kaltura will display a message indicating that the service has already been requested.
- After processing is complete, return to My Media (Kaltura).
Locate the video for which you requested new captions and click the pencil icon on the right side of the interface.
- Scroll down to the Captions section.
Identify the newly generated captions by their accuracy percentage. The new captions should have a higher accuracy percentage than the previous captions.
Confirm that the new caption file is set as the default. The default caption file displays Default next to its language on the left side of the interface. If the new caption file is not the default, click Set as default on the right side of the interface.
Request Spanish Captions:
To request Spanish captions, follow steps 1–4 in the Request Machine-Generated Captions section above, then complete the following steps:
- Under Source Media Language, the default selection is English. Click the dropdown arrow and select Spanish.
- Click Submit to send your request. You will receive a confirmation message that your request has been received. Spanish captions will be added to your video when processing is complete.
- If you receive a message stating that the service has already been requested for the video, allow additional time for the captions to become available.
View Existing Requests and Check the Original Request Date
In My Media, click the video for which you requested captions.
From the Actions dropdown menu, select Caption & Enrich.
- Review the Existing Requests table to view your caption requests and their details. View the "Request Date" column for the original request date.
Allow time for processing. Kaltura machine-generated closed captions typically take under 30 minutes for videos shorter than 15 minutes and up to 2 times the length of the video for entries longer than 15 minutes. Overall, most automated caption requests finish within 30 minutes to 2 hours.
Review and edit your captions. After the new captions are generated, review and edit them for accuracy, including punctuation, terminology, names, and speaker identification. For instructions, see How to Edit Machine Generated Captions