Show captions file    
This is a proof of concept demo that shows the same video with 2 different video captioning formats: TTML 1.0 and WebVTT 
  1. First select the captioning format buttons on the top.
  2. Select the Closed Captioning and Audio Descriptions from the CC and AD menu buttons from the video player below.
  3. To view the captioning syntax in use, click the links on the right.

Show descriptions file