Guide on How to Make a Blu-ray REMUX from a Blu-ray Disc (eac3to)

Programs needed

REMUX Rules

DTS HD MA 2.0=> FLAC
DTS HD MA 1.0=> FLAC
All PCM audio=> FLAC

Saves space. FLAC is lossless, no quality loss.

Omit the DTS Core track. Keep the AC-3 compatibility track if main audio is TrueHD. Use BDInfo to name tracks correctly.

Naming Rules

Name Year (Edition Info) Resolution Source Remux V/A Codecs-Group Tag

Examples:
French Exit 2020 1080p Bluray REMUX AVC DTS-HD MA 5.1-4K4U
Dantes Inferno An Animated Epic 2010 1080p Blu-ray REMUX AVC TrueHD 5.1-4K4U
Nobody 2021 1080p Blu-ray REMUX AVC TrueHD Atmos 7.1-4K4U

Place edition info (Theatrical Cut, Director's Cut, etc.) as needed.

Method #1 (using eac3to)

  1. Open cmd in the eac3to folder.

    Step 1

  2. Type eac3to to list drives. Find the BDMV drive (or mount ISO).

    Step 2

  3. Identify the main playlist by runtime (longest, has chapters). Here, "1)" is the movie.

    Step 3

  4. Press Up arrow, add the playlist number: eac3to K: 1).

    Step 4

  5. To demux all, press Up, add -demux. For specific tracks: eac3to K: 1) 2: 6: 7: 8: -demux.

    Step 5

    Note: AC3 192kbps 2.0 tracks are often commentary. Verify on DVDCompare or by listening.

  6. Press Enter to demux. Time depends on drive speed.

    Step 6

  7. Open MKVToolNix. Import demuxed files. Set track languages and names (from BDInfo).

    Step 7

  8. Go to Output tab. Set file name, add chapter file.

    Step 8

  9. Final setup should look like this:

    Step 9

  10. Click Start Multiplexing. Keep the eac3to log for private trackers.

Q&A

Q1: What does .* mean?
Automatically names files with correct extension. Can specify manually (e.g., en.flac).

Q2: What is E:\c\?
Output path for demuxed files. Defaults to eac3to folder if no path is set.

Credits

Old owners - Parnex and an unknown person
New / Current owner - Clara

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Pub: 27 Aug 2025 02:03 UTC

Edit: 27 Aug 2025 03:19 UTC

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