HDMI Encoded Output supported on new MBP?

Discussion in 'MacBook Pro' started by kryptticAZ, Nov 22, 2016.

  1. kryptticAZ macrumors regular

    Joined:
    Feb 26, 2007
    Location:
    Phoenix, AZ
    #1
    With my older MBP, I could just plug an HDMI cable into my TV or surround receive and get surround sound from a .mkv file that was encoded. With the new MBP, I have to use the USB-C multiport A/V adapter to get HDMI output. When I do this, it won't output encoded audio for surround sound and when I play a file encoded as such, the center channel is completely removed so I can't hear any dialog.

    How do I get normal HDMI output back? Is there a better adapter I should be using?
    --- Post Merged, Nov 22, 2016 ---
    BTW, I notice that when I watch a movie with VLC and browse the output options, the USB-C port (with the adapter plugged in) is showing up as "DisplayPort" rather than "HDMI." Is this issue perhaps that multichannel audio can't be passed via DisplayPort? If so, how do I make this "Pro" machine output multichannel audio?
     
  2. vipergts2207 macrumors 65816

    vipergts2207

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    Apr 7, 2009
    Location:
    Columbus, OH
    #2
    I can't necessarily help you with your problem, but as far as a better adapter, I'd probably stay away from the various multiport adapters for video output to HDMI. It seems like everyone I've looked at (other than a Cal-digit hub) only supports 4K at 30 Hz. At the moment, the only ones that do 4K at 60 Hz are a few dedicated, USB-C to HDMI dongles.
     
  3. kryptticAZ thread starter macrumors regular

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    Feb 26, 2007
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    Phoenix, AZ
    #3
    I'm using the Apple adapter right now as I presumed this would be the most compatible. Can you recommend a good HDMI-only adapter?
     
  4. vipergts2207 macrumors 65816

    vipergts2207

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  5. kryptticAZ thread starter macrumors regular

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    Phoenix, AZ
  6. xraydoc macrumors demi-god

    xraydoc

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    #6
    Can you try a video with surround audio from iTunes? Preferably something directly from the iTunes Store (so it's a known good, Apple-compliant file format). If it works from iTunes, then perhaps VLC needs an update.
     
  7. kryptticAZ thread starter macrumors regular

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    Feb 26, 2007
    Location:
    Phoenix, AZ
    #7
    The thing is that the audio works correctly when plugging directly into the HDMI port on my previous generation MacBook Pro. That leads me to believe either the Apple A/V multi port adapter isn't behaving or the new MBP's don't output multichannel audio through the USB-C ports.
     
  8. vipergts2207 macrumors 65816

    vipergts2207

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    Apr 7, 2009
    Location:
    Columbus, OH
    #8
    Both of them say they do.
     

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