We have a 19 minute tape BEFORE my memory card balked and stopped filming. It captured some well-thought moves and adroit plays, though failed to capture the child's successful checkmate. I have a hard time imagining that DYS wants to watch a 19+ minute video. Or do they?
One way to solve this would be to send them a video clip of part of it, plus a written record of all the moves made in standard notation. Either you could write it down, or if you think he's up to it, you could have him record the game as you play it.