i am trying to encode a video file that has 5.1 audio For my Apple TV first generation and i have the audio set to dolby pro logic ii from an apply tv preset but when i check the file with a program called videospec it shows up as 2ch stereo. what am i doing wrong? isnt dolby pr logic ii actually 5.1 surround sound? Should I set it to six channel discrete? any help would be appreciated. Thank you in advance.