From SA-MP Wiki
To be used with PlayerSpectatePlayer and PlayerSpectateVehicle.
|| Normal spectate mode (third person point of view). Camera can not be changed.
|| Use SetPlayerCameraPos after this to position the player's camera, and it will track the player/vehicle set with PlayerSpectatePlayer/PlayerSpectateVehicle.
|| The camera will be attached to the side of the player/vehicle (like when you're in first-person camera on a bike and you do a wheelie).