Audio description not synced with video
Where ICT has a mechanism to play audio description, it MUST preserve the synchronization between the audio/visual content and the corresponding audio description.
People who are blind cannot see the video portion of multimedia (audio-video) content. In order to give people who cannot see access to the information conveyed by video content it must have an accompanying audio description. The audio description must describe all important visual information such as scenes, important actions, text on the screen, facial expressions, etc. People who are blind can listen to the audio description while watching the movie and not miss important visual information.
Fix this issue by ensuring that the video player has the ability to preserve the synchronization of the visual content and the provided audio description track.