Topics in this article include:

About Kaltura Captions

Auto Captioning

Add Captions to Previously Uploaded Content

Review and Edit Captions



About Kaltura Captions

Kaltura Media has the ability to automatically add captions to your video content using automatic speech recognition (ASR), commonly known as machine captions. When a video is uploaded, the captioning processes begins immediately. Captions are created based on the audio track and the content is assumed to be in English. 


Machine captions are only 80% accurate and accuracy may vary depending on the audio quality, clarity of speech, background noise, etc. We recommend using the machine captions as a starting point - you will want to edit them for accuracy.



Auto Captioning

All videos created after August 6, 2018 will be auto-captioned. Once you create your video or upload your video to Kaltura, captions will be automatically ordered and applied to your video. The process may take several minutes to several hours, depending on the length of your video.



Add Captions to Previously Uploaded Content

To request captioning for older videos, go to your Kaltura My Media and locate your video. Click on the video or the video title to open.

screenshot of Kaltura My Media



Click on the Actions button below the video. This will open a menu.

screenshot of the Actions button



Select Caption & Enrich.

Screenshot of Actions menu



Select Order to order captions.

screenshot of order captions button



Your captions will be ordered. The process may take several minutes to several hours, depending on the length of your video.



Review and Edit Captions

Machine captions are only 80% accurate and accuracy may vary depending on the audio quality, clarity of speech, background noise, etc. We recommend using the machine captions as a starting point - you will want to edit them for accuracy.


To review your caption files, go to your Kaltura My Media and locate your video. Click on the video or the video title to open.

screenshot of video in Kaltura My Media



Click on the Actions button below the video. This will open a menu.

screenshot of Actions button below the video



Select Caption & Enrich.

Screenshot of Actions menu


This will bring up to a list of the caption requests for this video. Select your captions request and click Edit.

screenshot of captions requests list



This will launch a new window and display the caption editor. Here, you may edit the text, change the timestamp, add speakers, and more.


screenshot of caption editor tool



Detailed instructions for editing your captions may be found here: Editing Captions - REACH v2