Hi,
I've seen football productions that "highight" an individual player to call attention to his position on the field, and actions in a given play. I'm sorry I don't know to explain this better, but the technique allows a coach, scout, or recruiter to find and focus on just the one player.
Sometimes the technique just highlights the player while the film is paused, before a play starts; I also think I've seen a player remain highlighted for the duration of a play. The technique is used in long-range shots that show all or at least most of players at once.
I'm Clueless as to how this is done. If anyone knows, and thinks its compatible with Vegas, please let me know!
Thanks - Herm K