Dolby Vision now possible through MP4 Mux.

[morbius]

I've just acquired the Italian DV release of John Wick 2. I notice a few differences from my UK HDR10-only version

• audio is only DTS-HD 5.1 instead of TrueHD Atmos

• the frame rate is 24.0 fps vs 23.976fps

• the ornate on-screen subtitles burned in to the HDR10 video are missing from the Italian release

Before I noticed the missing subtitles, I was able to build a remux with the TrueHD track by re-clocking the Italian video fps to 23.976 in mkvtoolnix and figuring out that a delay was required on the video due to there being an extra second of black screen at the start of the UK version. But then I noticed the missing subtitles, which feature heavily in the JW films.

So now I'm thinking about how I can transfer the DV layer from my 23.976 re-clocked Italian video to the corresponding video in the UK release. Is there a workflow that will do that? And is it possible to account for the UK version having a second or so more blank screen time at the start compared to the Italian release? Appreciate any advice.

[deadchip12]

mine has both, brightness measurement and dv plot.

What I meant was your HDR10 plot does not look similar to my DV plot

Your HDR10 plot


My DV plot

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Before I noticed the missing subtitles, I was able to build a remux with the TrueHD track by re-clocking the Italian video fps to 23.976 in mkvtoolnix

You have to change the EL framerate too and not just with the container using mkvtoolnix. You have to write a new bitstream framerate(9-2) for both layers and then build a new P7 ST-DL mkv (4-2).

But then I noticed the missing subtitles, which feature heavily in the JW films.

english subtitles for the Italian BD: https://drive.google.com/drive/folders/ ... drive_link

So now I'm thinking about how I can transfer the DV layer from my 23.976 re-clocked Italian video to the corresponding video in the UK release

No, you can't do that.

[RESET_9999]

What I meant was your HDR10 plot does not look similar to my DV plot

DV plot can look slightly different because:
1- different algo
2- dolby has tunings that produce different metadata
3- dolby can blend and copy metadata from one shot to another which is what they did in this movie.

If you want to compare the brightness of both releases, you have to run them in 6-2 as I did.
P5 in 6-2 is slow though.

[deadchip12]

What I meant was your HDR10 plot does not look similar to my DV plot

DV plot can look slightly different because:
1- different algo
2- dolby has tunings that produce different metadata
3- dolby can blend and copy metadata from one shot to another which is what they did in this movie.

If you want to compare the brightness of both releases, you have to run them in 6-2 as I did.
P5 in 6-2 is slow though.

Yes I ran it in 6-2 and got the above plot. Looks very different, not slightly. I did another movie before and HDR10 and DV plot looked quite similar. This one not at all.

[RESET_9999]

Yes I ran it in 6-2 and got the above plot. Looks very different, not slightly. I did another movie before and HDR10 and DV plot looked quite similar. This one not at all.

No, the image you posted is from 6-3 or 6-4, not 6-2. 6-2 measure the pixels with madvr and 6-3/6-4 just plot the L1 metadata.
the P5 webdl and HDR10 BD in 6-2 look like this comparison: https://slow.pics/c/wQzSIwSH

a p5 webdl in 6-2 madvr takes longer to process because for some reason, madmeasureHDR.exe won't accept a libplacebo avisynth script as input so the script has to convert to prores but it's the most accurate way to compare DVP5 and HDR10.

[deadchip12]

Yes I ran it in 6-2 and got the above plot. Looks very different, not slightly. I did another movie before and HDR10 and DV plot looked quite similar. This one not at all.

No, the image you posted is from 6-3 or 6-4, not 6-2. 6-2 measure the pixels with madvr and 6-3/6-4 just plot the L1 metadata.
the P5 webdl and HDR10 BD in 6-2 look like this comparison: https://slow.pics/c/wQzSIwSH

a p5 webdl in 6-2 madvr takes longer to process because for some reason, madmeasureHDR.exe won't accept a libplacebo avisynth script as input so the script has to convert to prores but it's the most accurate way to compare DVP5 and HDR10.

Yeah sorry that one is from 6-3. I followed your tutorial: run 6-2 with bluray version to get HDR10 plot, and run 6-3 with web version to get DV plot, then compare the two plots. Isn't that correct?

[RESET_9999]

yes but as i said, dolby has different tunings and can have blended shots which can be misleading sometimes. If you want to see the true brightness difference between two releases, you have to use 6-2.
Also you have to use the P5 webdl and not the P8 version as your picture shows.

[morbius]

Before I noticed the missing subtitles, I was able to build a remux with the TrueHD track by re-clocking the Italian video fps to 23.976 in mkvtoolnix

You have to change the EL framerate too and not just with the container using mkvtoolnix. You have to write a new bitstream framerate(9-2) for both layers and then build a new P7 ST-DL mkv (4-2).

But then I noticed the missing subtitles, which feature heavily in the JW films.

english subtitles for the Italian BD: https://drive.google.com/drive/folders/ ... drive_link

So now I'm thinking about how I can transfer the DV layer from my 23.976 re-clocked Italian video to the corresponding video in the UK release

No, you can't do that.

Thanks for the detailed advice. I pushed JW2 through the 9-2 workflow and got a single .hevc file. The 4-2 workflow requests two input files, has something gone wrong? What does the 9-2 do to the biststream DTS-HD track - does that get fixed, or do I still need to replace with an audio track pre-sync'd to 23.976 video?

The link to subtitles is labelled as 23.976. As my UK Atmos release has an extra second of blank-screen time at the start, I guess I'll have to snip that off to preserve subtitle and audio sync, rather than offset the converted video with a delay. Clearly there's a lot to do to achieve the best-possible version of JW2 and JW1, and it requires forgoing the nice graphic-art stylised subtitles that the English language versions have.

I received the Italian JW1 disc today and notice it's 23.976, so is JW2 mis-authored at 24.0? I'm assuming that 23.976 is the reference, i.e. Italian JW2 has a small speed up, rather than the UK release having a small slow down. Looks like the Italian JW1 also has 1 second less of black screen at the start than the UK version, but at least the framerate matches the UK version.

[RESET_9999]

I pushed JW2 through the 9-2 workflow and got a single .hevc file. The 4-2 workflow requests two input files, has something gone wrong?

if you rip to a BDMV/ISO, just demux the layers with tsmuxer and change the framerate of each stream with DS.
if you rip to MKV, you have to demux the layers. Workflow 1 and select R (remove) and change the framerate of each stream with DS.
then make a new ST-DL in 4-2

What does the 9-2 do to the biststream DTS-HD track - does that get fixed,

nothing and the point of changing the framerate is to get the TrueHD track so the original 24fps DTS track is now useless.

The link to subtitles is labelled as 23.976. As my UK Atmos release has an extra second of blank-screen time at the start, I guess I'll have to snip that off to preserve subtitle and audio sync,

the subs I linked are for the slowed down Italian bluray so once you change the videos framerate to 23.976, they will fit.

I received the Italian JW1 disc today

subs for the Italian BD JW1:
https://drive.google.com/drive/u/0/fold ... hC2TOamMyS

[morbius]

thanks for your patience. I rip to mkv, I successfully demuxed to two hevc files and fixed their framerates and then combined. I now have a ST-DL hevc file. Looking for a work flow to convert this to mkv, I've looked through the options but can't find it?

(I tried the mkv batch muxer but on hitting return after dropping in the file it immediately reports completion without having done anything).

[RESET_9999]

you mux the new ST hevc file and audio/subs with mkvtoolnix. No script is required for that.

https://mkvtoolnix.download/downloads.html

[morbius]

thanks, I use mkvtoolnix all the time, didn't realise it could read hevc files.

[deadchip12]

Also you have to use the P5 webdl and not the P8 version as your picture shows.

Oops I used P8 version with The Marvels...

Why do we need to use P5 instead of P8?

[RESET_9999]

Because the DV source is the P5 webdl and sometimes the studios decide to deliver a different version for the HDR10 stream. Marvel's Black Widow is one of those IIRC.