Play 5.1 encoded files over stereo audio cables?

Discussion in 'Apple TV and Home Theater' started by Subiklim, Mar 21, 2008.

  1. Subiklim macrumors 6502

    Mar 31, 2006
    Manhattan, New York
    I know I won't get 5.1 from the speakers if I do this, but as it stands right now, I get NO sound.

    I encoded most of my films with visualhub and 5.1 audio, but for some reason the tv doesn't work with my new TV's HDMI port (it's not the TV... xbox and cable both work on it). So I have to use the component cables, and stereo audio. I don't have any optical audio inputs, so I can't use that. How do I get some sound out of these files using this setup?

    Or better yet, if someone has a reason why HDMI isn't working on the tv with this TV (and just this particular model). The picture flashes in and out when using HDMI.
  2. cohibadad macrumors 6502a


    Jul 21, 2007
    turn off the surround sound option on :apple:TV to force audio through the stereo cables. HDMI sounds like you might have snapped the port in the :apple:TV and it's intermittently transmitting. Easy to do. My biggest beef with HDMI/USB connections.
  3. Subiklim thread starter macrumors 6502

    Mar 31, 2006
    Manhattan, New York
    I tried that, still no sound!

    That's what I thought, but then I got a new tv from apple, and I had the same issue. Maybe different HDMI versions on the tv and tv?
  4. Cave Man macrumors 604

    Cave Man

    Feb 12, 2007
    Neander Valley, Germany; just outside Duesseldorf
    It's not going to work.

    When you do a transcode with Visual hub using the Apple TV 5.1 preset, you only get one audio track - the native AC3. Your Apple TV cannot decode this track, it can only pass it to a device that can read it, such as a Dolby Digital-capable receiver.

    The reason you're not getting sound through your HDMI port is because your TV cannot decode DD from a source other than its ATSC tuner. See the first post of this thread for the details.

    Your options are (1) buy a receiver with an optical input, (2) buy a receiver with an HDMI input, or (3) re-encode your videos with both AC3 (5.1) and AAC (analog 5-channel) audio.

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