Playback video with 4 audio channels on a Mac
  • visio_001
    junior Member
    Posts: 5
    Joined: Wed Sep 12, 2018 12:48 pm

    Playback video with 4 audio channels on a Mac

    by visio_001 » Sat Sep 27, 2025 11:23 am

    Hello Madmapper Pros,

    I am trying to play a single video which contains 4 audio channels.
    The video is a quicktime prores with 4 audio channels.
    Plays fine with all channels on a blackmagic hardware player.
    In Madmapper I only get the stereo audio signal.
    Tested the sound card with other software, which worked well.

    My system is:
    Madmapper 5.7.2, Macbook Pro M1, Focusride sound card

    I did the following in MadMapper:
    - selescted the audio output device at the audio preferences
    - enabled audio
    - enabled Hardware acceleration
    - played the video

    I also tried this terminal command.

    macOS, in Terminal.app:
    defaults write com.garagecube.MadMapper audioOutputMultiChannel 1

    Is it still necessary?

    Perhaps it is not possible to play a multichannel prores file.
    If this is the case, which container and codec works?
    If it is not passible to playbac multichannel audio on a Mac, is it possible on a PC?

    Hope someone could help me.

    All the best,
    Visio

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