Subtitles and Closed Captioning can help users who do not have the ability to process audio understand any aural elements to your ePortfolio videos. At this time, we only support VTT files for Subtitles and Closed Captioning.
After unlocking your slide, select your video and click the Settings button (1) to open the image control panel on the left side of your screen. Next, click the Edit button (2) under Subtitles and Closed Captions.
On the next screen, click Add subtitles & closed captions (3) then the Upload button (4) to choose your VTT subtitle file. When you are finished, click Add (5) to finalize your selection and add the VTT file to your video.