Follow the steps below to preview the captions while playing the media file directly from your 3Play Media project.
Step 1- Select the file
Locate the file from the My Files page that you would like to preview. Click the file's name to view the file level show page.
Step 2- Click CC Preview Captions
From the file show page click CC Preview Captions.
Step 3- Click play
Click the play button when the video player pop-up window displays.
The media file will play back with the captions displayed on screen.