First of all, you can only see the control input for the plane the film was recorded in. But for those, i think more or less all information can be seen.
Throttle management: Watch the rpm/MP gauges and check the speed.
Rudder: Check the slip ball (it indicates the G-forces along the 3-9 line of the plane, ie the forces applied sideways)
Aileron/elevator: Self explanatory i guess
.
Watch the film with 'use recorded views'.
What i do when i want to analyse a film is first watch the fight with icon/trails/recorded views and external view. (Sometimes even fixed view).
When i got a good idea of whats happening in the film, i watch it again using internal and recorded view. That way i see what the pilot saw during the fight. (BTW, you can move and save your headposition in film viewer same as you can ingame)
