Core Audio

MKV playback, recompression, remuxing, codec packs, players, howtos, etc.
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Nodiaque
Posts: 18
Joined: Wed Apr 28, 2021 6:41 pm

Core Audio

Post by Nodiaque »

Hello everyone,

I've read about core audio and I'm very lost.

I have a video which have
DTS-HD MA Surround 5.1 English
- DTS Surround 5.1 English - Flag Core Audio

Once extracted, the MKV file have 2 audio track. My understanding is that it should only have 1 track? Do I need to check both of them or will I go missing part of audio if I don't check the core audio? I have this with either 5.1/7.1 audio with 5.1 core with DTS and Dolby. I'm unsure what I'm suppose to select to have the whole soundtrack when playback. I do have a 7.1 home theater.

Thank you
Woodstock
Posts: 9912
Joined: Sun Jul 24, 2011 11:21 pm

Re: Core Audio

Post by Woodstock »

For some codecs, like DTS-HD MA, MakeMKV will create a second track with just the lossy core audio in it, for compatibility purposes.
MakeMKV Frequently Asked Questions
How to aid in finding the answer to your problem: Activating Debug Logging
Nodiaque
Posts: 18
Joined: Wed Apr 28, 2021 6:41 pm

Re: Core Audio

Post by Nodiaque »

Ok, so it is not needed if I want only the full DTS-HD or TrueHD Atmos track?
Woodstock
Posts: 9912
Joined: Sun Jul 24, 2011 11:21 pm

Re: Core Audio

Post by Woodstock »

Correct. The way they work is you have the lossy core, and additional data to replace the "lost bits". Players that don't support the loss-less playback ignore that data. In Theory.

Not all players handle that well. If your player does, there is no need to keep the separate track.
MakeMKV Frequently Asked Questions
How to aid in finding the answer to your problem: Activating Debug Logging
Nodiaque
Posts: 18
Joined: Wed Apr 28, 2021 6:41 pm

Re: Core Audio

Post by Nodiaque »

Oh great, I'm playing everything through my computer that support anything I throw at him so no problem.

Thanks
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