Kaltura Multimedia: Adding Closed-Captions (CC)

Upload a video to the Kaltura Media Gallery
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On this page...
  1. Request Human Captioning
  2. Request Machine Captioning
  3. Import Captions from Another Source (Zoom Cloud Recordings)

Request Human Captioning

For the best accuracy you can submit a request for human-captioning for your video.

NOTE: Clackamas Community College uses CaptionSync resources provided to us for free from the state to process these and if we don’t use them we lose them. Don’t hesitate to request Human Captioning well in advance of possible needing it!

If you don’t already have a transcript for your video or your machine captioning is too inaccurate you can submit a form to request a video be captioned.

Request Machine Captioning

NOTE: As of 2023 this is enabled by default and should only need to be requested on older videos within Kaltura.

Machine Captioning is fast and simple and decently accurate (~80%) but may especially struggle with acronyms and industry specific words. Video owners can easily correct machine transcripts. These instructions require that a video be uploaded to the Kaltura Media Gallery within a course and is part of our series of Kaltura instructions.

NOTE: Kaltura Reach will machine caption a video in the requested language if it’s spoken in the video and is not limited to English but it is unable to translate one spoken language to captions in another language.

Enter the course that contains the video in question.

Expand the Nav Drawer if it’s not already open on the left and click the Media Gallery item.

or

Expand the Nav Drawer from any location in Moodle and click on the My Media item.

Click on the video in need of captions.

Scroll down to the space directly below the video.

Locate and open the ACTIONS menu.

Select the Caption & enrich item.

If your video has not been Machine captioned previously you will get a message under the Existing requests section about no requests were found so we’ll need to submit on.

Scroll down to the Order Captions & Enrichment Services section.

Leave values at their default.

OPTIONAL: Change the Source Media Language item to the spoken language in your video.

Click the Submit button.

Part of the page will reload and there will be a Pending entry under Existing requests.

OPTIONAL: Click the expand arrow on the right of the entry to view additional details about your request, such as the estimate for how long it will take to process your request, this will vary based on system load and video length.

Check back later after your request has been processed and your video now has a CC button in the player.

Import Captions from Another Source (Zoom Cloud Recordings)

These instructions require that a video be uploaded to the Kaltura Media Gallery within a course and is part of our series of Kaltura instructions.

NOTE: These instructions are ideal for videos taken from Zoom Cloud and already have a Transcript/Captioning file associated with them though you will need to convert those caption/transcript files from vtt to srt files.

Enter the course that contains the video in question.

Expand the Nav Drawer if it’s not already open on the left and click the Media Gallery item.

Click on the video in need of captions.

Scroll down to the space directly below the video.

Locate and open the ACTIONS menu.

Select the Edit item.

Additional tabs will appear.

Click into the Captions tab.

Click the Upload captions file button.

Use the Browse… button to locate your captioning file.

NOTE: transcript files downloaded from Zoom will end with .vtt whch is not currently supported. You can quickly convert your .vtt file into a compatible .srt file at subtitletools.com and upload that.

Set the Language.

Set the Accuracy, If you are are relying on machine/automatic transcriptions your accuracy is probably between 50-80%.

Set the Label to something meaningful like “Captions from Zoom”, “Acronyms spelled out”, or simply “English” (or whatever language the captions are in).

Click the Save button when you’re done.

OPTIONAL: If you’d like these captions to be selected by default when someone plays the video click the Set as default check mark icon.

And that’s it, your video now has a CC button in the player.

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