Blu Ray Audio LPCM Extraction from MKV

The place to discuss Mac OS X version of MakeMKV
Edgeyboy
Posts: 7
Joined: Wed Mar 06, 2024 9:14 am

Blu Ray Audio LPCM Extraction from MKV

Post by Edgeyboy »

I have some ripped MKV files from Blu Ray Audios

I want to extract the stereo high res LPCM tracks to play on my two channel system.

I use a Mac. What's the easiest way to extract the stereo LPCM tracks from the MKV's and save as FLAC or similar?

Thanks Tom
Woodstock
Posts: 10990
Joined: Sun Jul 24, 2011 11:21 pm

Re: Blu Ray Audio LPCM Extraction from MKV

Post by Woodstock »

I used to have MakeMKV do the conversion (there's a FLAC profile you can use to make the conversion automatic, from what I recall), but I stopped bothering when I ended up processing everything through handbrake to make it smaller. Handbrake can use LPCM as a source, and output FLAC or other audio types. It hardly costs any time, because the majority of the time is spent processing the video.
Edgeyboy
Posts: 7
Joined: Wed Mar 06, 2024 9:14 am

Re: Blu Ray Audio LPCM Extraction from MKV

Post by Edgeyboy »

Thanks for your advice. I ripped it into FLAC using MKV. Plays fine but no gaps between the tracks unfortunately so more research to do
Mr. Red
Posts: 53
Joined: Wed Nov 01, 2023 10:19 am

Re: Blu Ray Audio LPCM Extraction from MKV

Post by Mr. Red »

If each track has it's own chapter you can use MKVToolnix (re-)mux with split on chapter option. Then you have separate Tracks.
But if the original track doesn't have any gaps between the tracks, this method will not add any silence at the start or end. So any player with gapless playback will still play them directly after each other.

You could use audacity or something similar to add a few seconds of silence at the start or end of each track, or find a player that allows to adjust the pause between tracks.