HOW TO: Order closed captions from IBM Watson

To use Mediasite to submit presentations to IBM Watson for machine-grade captioning, you must first create an account with IBM.

Once your account is set up and configured in Mediasite, order captions for a Mediasite presentation by performing the steps below.

Important Note: You should make any desired edits to your Mediasite video before you create and add captions. Mediasite will not automatically edit or remove portions of existing captions. For example, if a video already has captions, and you edit the video to remove the first 30 seconds of content, the existing captions will remain unchanged, meaning the captions will run 30 seconds behind the edited video. Creating and adding closed captions should occur after your final edit.

1. From within the list of presentations in your My Mediasite portal, select the name of the presentation for which you wish to order captions. A summary of the presentation will appear.

2. Select Edit Details in the right column. Options for editing the presentation will appear.
   

3. Select the Delivery tab.

4. Check the Audio Transcriptions checkbox.

5. Select Choose a Provider for Captioning and then Select a Captioning Profile. Choose your IBM Watson captioning profile from the list. You will only be able to pick from profiles you have been authorized to use.

   

6. Select Save at the top-right.

   Audio from your presentation will be sent to IBM Watson and processed faster than real time - roughly half the length of the presentation's duration. For example, an hour-long presentation will take about 30 minutes to process. By default, you will receive an email notification when processing is complete.

   When IBM Watson is finished, the service will automatically post the captions to the Mediasite presentation.

7. IMPORTANT - Edit the captions for accuracy and completeness using Mediasite's built-in caption editor. Machine-generated captions, such as those from IBM Watson, will not be accurate enough to satisfy accessibility requirements and will require manual edits. This step is NOT optional!

   Captions generated using IBM Watson include a confidence score, visible in the top-left corner of the caption editor, representing IBM Watson's confidence in the accuracy of its speech-to-text transcription.

   

   If this score is not high enough, the captions will not automatically display in the player. Make the necessary edits in the caption editor, and then use the caption editor to publish the captions for the presentation.

   

Verify the captions have been inserted into the Mediasite presentation

1. From the presentation summary, select Watch In New Window from the right column. The player will load in a new tab/window.

2. Select the Play button to begin playing the presentation.

3. Using the player controls at the bottom, select CC to display the captions. This button will only be available if captions are present in a Mediasite presentation.