DTS 6.1 Tracks automatically being downmixed to 5.1

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CSManiac33
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Joined: Fri Dec 23, 2022 6:23 am

DTS 6.1 Tracks automatically being downmixed to 5.1

#1 Post by CSManiac33 » Sun Jan 26, 2025 1:58 am

This is an issue I have run across trying to rip a couple of DVDs with DTS ES 6.1 tracks where it automatically converts them into a 5.1 track without any indication. I can understand this being an option as I have had compatibility issues with 6.1 tracks before but it shouldn't be the only option available and done without any indication.

dcoke22
Posts: 3605
Joined: Wed Jul 22, 2020 11:25 pm

Re: DTS 6.1 Tracks automatically being downmixed to 5.1

#2 Post by dcoke22 » Sun Jan 26, 2025 5:17 pm

I don't think I have any DVDs with DTS-ES Discreet 6.1, but I would guess you could make a backup of the disc (icon of yellow folder with green arrow) and then open the resulting .iso file in something else, like the MKVToolNix tools, and create a .mkv file from there. It might handle that audio codec better.

CSManiac33
Posts: 7
Joined: Fri Dec 23, 2022 6:23 am

Re: DTS 6.1 Tracks automatically being downmixed to 5.1

#3 Post by CSManiac33 » Mon Jan 27, 2025 12:44 am

Yeah that is what I did to get the 6.1s but it just shouldn't like be automatically downmixing it and older builds use to not do this.

dcoke22
Posts: 3605
Joined: Wed Jul 22, 2020 11:25 pm

Re: DTS 6.1 Tracks automatically being downmixed to 5.1

#4 Post by dcoke22 » Mon Jan 27, 2025 4:09 pm

Are you running on Linux? The reason I ask is because the latest versions of MakeMKV on Linux support a different, newer version of FFMPEG. Maybe this behavior is a side effect of the newer version of FFMPEG used?

It is my understanding that on Windows and Macintosh, MakeMKV ships with a tiny version of FFMPEG baked in.

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