In my opinion there are two main types of captures: gameplay and cinematic.

Both are complex and require a certain amount of expertise. The first one because it is necessary to be able to play the game in a fluid way (neither too fast nor too slow) and to succeed in using the best gameplay possibilities (choice of the level / choice of actions …). The second one because it requires a real staging: you have to place the camera in the right place / redo the lighting / make nice animations etc …