UE2 record gameplay

As a total newbie, I’m having problems finding documentation on how to record gameplay/footage in Unreal Engine 2, i.e. footage of what the player sees in a game. I would like to do this my modifying unreal class files. The only thing I came across were for later (?) Unreal Engine versions that have Matinee and some notes about it being better to take screenshots and rebuild into a video file offline. In case relevant, we wanted to track eye movements during play and would need to know what our players “saw” to know what they were looking at.

Thanks in advance,