How can I convert an audio file from dts-xll to ac3, & replace video track? [Solved]

[Somewhat Reticent]

Is there a way to convert an audio (.mka) file from (6-channel) DTS XLL to AC-3?
And maybe replace the audio track in a video .mkv file? Or at least combine/merge them?
I have pieces, but don't know how to re-arrange them.

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Issue now moot: found matching .mkv archive and down-converted using handbrake.
Had to give vintage kit several cool-down breaks. Thanks to one & all - will explore options.

[BitterTruth]

I don't really know much about audio/video but a quick bit of googling and i think you can:

1) use an online converter site to convert .mka to ac-3
2) use mkvtoolnix to change the default audio for the mkv file

i think mkvtoolnix might be in the test repo though.

[Eadwine Rose]

It is in the normal repos. Enabled repos tab.

[Stevo]

We have the latest mkvtoolnix 92.0 backport from Debian in MX 23 main and 21 test. 93.0 apparently needs some patch, even to build on Trixie. Let me see if deb-multimedia has it.

Yes, you can use it to add or replace tracks in an mkv file, and to choose one as the default.

Here's a guide to using ffmpeg on the command line to convert DTS to AC3, though I wonder if MystiQ from the repos could handle it in its GUI. It does have AC3 as a target.

[sunrat]

Here's a command I used to convert an AVC video with 5.1 DTS audio to HEVC with stereo AAC audio:

Code: Select all

ffmpeg -i infile.mkv -c:v libx265 -preset medium -crf 25 -acodec aac -b:a 192k -af "pan=stereo|FL < 1.0*FL + 0.707*FC + 0.4*BL + 0.5*LFE|FR < 1.0*FR + 0.707*FC + 0.4*BR + 0.5*LFE" output_stereo.mkv

infile was 4.4GB, out was 1.1GB
It would be quite easy to adapt that for AC3 audio, although personally I would prefer AAC or vorbis.

Here's a guide to using ffmpeg on the command line to convert DTS to AC3, though I wonder if MystiQ from the repos could handle it in its GUI. It does have AC3 as a target.

IIRC i tried Mystiq to do that but it didn't successfully downmix the 5.1 audio to stereo. It was a while ago though so memory may be hazy.