What exactly does HDMI audio AUTO setting do?

Discussion in 'HDD Media player(RTD 1295)' started by Ekstravertas, Jan 1, 2021.

  1. Ekstravertas

    Ekstravertas New Member

    First of all Happy New Year to everyone!
    Can someone help me to understand what exactly does AUDIO>HDMI>AUTO setting do? I know it's recommend to leave it on RAW in order to get bit by bit perfect uncompresed sound.
    The thing is that some time, when it's late and I don't want to much noise watching movie, I watch it not through my receiver, but simply through TV speakers. In that case if I leave this setting on RAW, there is naturally no sound from my TV in 5.1 movies. If I leave it on AUTO, I can watch movie on my TV, or in 5.1 through my receiver. But does it mean that on AUTO, all my 5.1 sources (let's say multichannel music) is not bit by bit perfect anymore and are compressed? Or does AUTO setting chage from RAW (if I listen to 5.1 music through receiver) to some other and somehow adapts sound when I simply watch movie on TV?

    TL; DR. Do I lose quality of sound if I set it to AUDIO>HDMI>AUTO?
  2. videobruce

    videobruce Member

    I would assume it would allow auto sensing for RAW to PCM and vice-a-versa.
  3. Superdog

    Superdog Member

    My Sound HT-X8500 sound bar get no sound when playing DTS 5.1 videos if I set HDMI audio to RAW. But Sony said it can support all Dolby DTS decode and TrueHD can use RAW setting. Only DTS 5.1 needs auto.

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