After finding some on-line releases that use BD extracted subtitles (in .sup format) and tone map it to the exact same color of the UHD-BD release, I was really intrigued and eager to perform this kind of conversion.

The best solution I could find so far is this tool:
https://github.com/quietvoid/subtitle_tonemap

It's indeed an easy to use and works. The problem is that apparently it doesn't allow the user to change the tone mapping parameter. It defaults to a dark gray, while most of the original UHD-BD subtitles have a lighter shade of gray.

Since it's based on BDsup2sub, there's probably a way to do it in this program. But I couldn't really find out how. The best I could is described bellow, but when you load the .idx file it's clear that it looses quality in a way I can only describe as presentiing jaggies or stairstepping effect. 

- load a blu-ray sup file
- export it as SUP/IDX
- load the exported sup/idx file
- change the palette mode to 'Create new'
- check the colors in use under 'Edit DVD Frame Palette'
- edit the palette under 'Edit imported DVD palette'
- export it back as SUP(BD).


The subtitles from the on-line releases don't have this downside.

Has anyone performed this conversion or know how to do it? 
Any help will be much appreciated.

Guys, You are experts in Laserdisc so:

Two things:

1. Am I right that raw video on Laserdisc is somethimes better than DVD, example Aliens SE on my DVD PAL looks like someone use a little dnr to smooth video in comparsion to Laserdisc raw mpeg2:

here is a little sample in mp4 h264 from Aliens UK PAL LDRip

https://drive.google.com/file/d/1gcY3Lju...sp=sharing

I add polish voice acting for my friends.

Also I made quick comparsion LD vs DVD:

https://photos.google.com/share/AF1QipP-...NOWExvbDRB

I love these colors and contrast

2. Where I can find in net Aliens Special Edition NTSC LDRip in Mpeg2, or Theatrical? I think colors are these same in both version. Widescreen will be nice.

https://imgur.com/gallery/18Sm2

I live in Poland problem is availability of Laserdisc, not to mention ripping So I ask You for help.

I'm converting some 00000.m2ts files from BluRay rips into MKV's using MKVToolNix but it doesn't work with the chapters.txt files so I can preserve them. Is there a way to convert them for use in MKVToolNix or alternatively is there another way to convert the rips to MKV's and keep the chapters?

Thanks.

Reports are coming in that the track labelled as "original mono audio" on the new Psycho UHD is just a folddown of the surround remix with new added sound effects and other issues.

Fortunately the mono audio on the German Turbine BD is the original and syncs perfectly to the UHD uncut version of the movie with a delay of +667ms.

Hey gang,

I've got a really simple project I wanna do but haven't done any video editing for years.

I want to take the main feature off a blu ray, trim the ending and then graft on the original extended ending that is available as an extra.

A/V stats are the same (1080p, ~24fps, LPCM).

Ultimately, I'd like to output the final product as an mkv with no re-encoding (although minimal re-encoding at the splice point would be tolerable).

Any suggestions for all-in-one free or trial software with a minimal learning curve to do this? I already have both clips demuxed and ready to go.

Cheers!

Blu-ray.com:

Scream supplies the film's original Dolby Stereo as the default (and only) track on both discs: a DTS-HD Master Audio 2.0 Stereo (1614 kbps, 24-bit) on Disc One and a DTS-HD Master Audio 2.0 Stereo (1646 kbps, 24-bit) on Disc Two.

The Shout Factory (Scream) release contains two different cuts: theatrical and desaturated (both, 2.0 stereo mix) but Laserdisc 4.0?

https://www.lddb.com/laserdisc/03235/41057/Dracula

How can that difference be possible? What is the real original Dolby stereo track? I was wondering if it would be nice to have a preservation with the LD track.

The movie was originally released with a mono mix, but blu-rays only features stereo tracks (and Criterion has missing shots). 

https://www.lddb.com/laserdisc/27679/NDH-101/Eraserhead

Anyone have the Eraserhead laserdisc and can capture the audio to obtain the PCM mono track?

I'd like to sync the original LD audio to the Capelight blu-ray. If you can capture the video as well, this would help syncing a lot.

 Hello! I've recently registered because I'm interested in audio preservations.