The viewer used through 'start-programs' is vastly better than the ingame one. It also seems to work better if you start the viewer and then open the film, opposed to opening it by double clicking a film itself. If using a shortcut, make sure it points to the appropriate viewer. AH1 and early AH2 films, before the AH2 was officially active, wont work in the current AH2 viewer. AH1 films need the AH1 viewer. I'm not even sure if the AH2 early films can be used in either viewer.