Who actually films the coaches game film?

[topdog]

I have heard more than coach Gibbs speak of coaches game film.He also spoke that it was completely different from TV game film.We as fans make our opinion of what we see on TV and coaches make there decisions on what they see on there detailed game film.Question is do the individual teams do there filming or does the nfl do it and make it available for all teams?My quess is both that way nfl makes other teams film available to all teams but if some one knows real story on this would like to know and to what detail are those game films.THANKS :dallasuck