What is Ac3-Passthrough?

Discussion in 'Apple TV and Home Theater' started by suss2it, Aug 24, 2010.

  1. macrumors regular

    Joined:
    Sep 9, 2009
    #1
    What exactly does AC3 Passthrough do? And what are the benefits of it? And is it possible to tell if a file that has an AAC track and an Ac3 if the Ac3 one is passthrough?
     
  2. macrumors 68020

    Joined:
    May 27, 2008
    #2
    it passes the digital stream through without touching it. If you've got a stereo capable of handling the raw stream, you'll get surround sound.

    if you play the file in VLC or quicktime, hit CMD-i, you can see what kind of audio it has.
     
  3. macrumors 68020

    Joined:
    Mar 27, 2003
    #3
    Well, if your talking about the appletv .. it can *only* pass through an ac3 track ... and only if your hooked up to an Ac3 capable receiver or tv. Otherwise it will play back the 2 channel aac track. If hooked up properly to an ac3 capable receiver your receiver should indicate the sound being used.
     

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