If this belongs to a series of clips following a group of people, you could add a
An automated system that parses the filename logic. Teens18yo-(1399).mp4
If this is part of a video archive or social project, a great feature would be If this belongs to a series of clips
A visual navigation bar at the bottom of the player. Teens18yo-(1399).mp4
An interactive layer that appears over the video.
If you can share more about what the video actually contains, I can give you a much more tailored idea!