[Ffmpeg-user] Why use packet queue

Hi, is see ffplay.c in ffmpeg, and it use packet queue functions, why use packet queue and not directly display picture/sound when we decode a frame ? Regards, Brice. -- Brice Rouanet I.N.S.A. Centre de Ressources Informatiques Complexe Scientifique 135 Avenue de Rangueil 31077 Toulouse Cedex4 (France) tel 0561559374