Dolby Vision now possible through MP4 Mux.

[staknhalo]

Single-track P7 FEL also works but not all of them.

is that a C1 specific issue or plex/occurs on multiple devices @ hw/os level?

[RESET_9999]

Single-track P7 FEL also works but not all of them.

is that a C1 specific issue or plex/occurs on multiple devices @ hw/os level?

I don't know about the C1 but playing a dual-layer file on a device that only has one decoder is asking for trouble IMO.
I have a C8 and it supports the decoding of FEL, the reason why some movies won't play(or stutter) seem to be random.

[DaMacFunkin]

Been discussed before the LG X/1 series don’t play dual track via internal media player.
7/8/9 do but as RESET999 advises random movies do not play or don’t play properly… Bumblebee is an example that springs to mind.

[Albano]

It's really dynamic and very close to the original DV. It measures each pixel just like the Dolby algo and the dovi_tools use those values to create proper L1 metadata.
I've compared with the Spears and Munsil clip and the scene cuts (brightness changes) are exactly the same as the original. The difference is the trim passes which are optional in DV.

Should use RPU from madMeasureHDR (extract from Blu-ray 4K HDR10) or from WEB-DL have Dolby Vision?

[RESET_9999]

Should use RPU from madMeasureHDR (extract from Blu-ray 4K HDR10) or from WEB-DL have Dolby Vision?

DV WEB-DL of course unless the HDR grade is not the same or there is an aspect ratio mismatch (EG. imax vs non-imax).

[Idrin]

Hey folks.

I've been following this guide to convert a profile 7 Dolby Vision remux mkv to profile 8 for playback on my LG C1. It works, but only for video. There is no audio track in the output file. Am I doing something wrong or is more commands needed for audio as well?
viewtopic.php?f=12&t=18602&start=2970#p96282

Thank you for any input in advance.

[Albano]

Should use RPU from madMeasureHDR (extract from Blu-ray 4K HDR10) or from WEB-DL have Dolby Vision?

DV WEB-DL of course unless the HDR grade is not the same or there is an aspect ratio mismatch (EG. imax vs non-imax).

Could use RPU from WEB-DL or Blu-ray 4K with Blu-ray 1080p SDR to creat a Dolby Vision Remux 1080p file?

[nekno]

Should it be possible to create DV P7 MEL from madVR HDR measurements?

This isn't working for me:

1. Collect madVR measurements from HDR10 BL
2. Convert to RPU using dovi_tool
3. Convert RPU to P7 using dovi_tool editor with the json file set for "mode": 1
4. Inject RPU into BL using dovi_tool
5. Demux BL and EL+RPU using dovi_tool

The EL stream cannot be rendered and isn't recognized by tsMuxer in order to be remuxed into BDMV.

So obviously there's more data in an MEL stream than the RPU to make it a "null video stream". Upon reflection, that is obvious.

So I need to keep an "empty" HEVC stream laying around.

If I'm using a standard 2160p BL and need the standard 1/4 size 1080p EL to meet P7 specs, could I just take an MEL from another release, demux the EL from the RPU, trim the EL to the correct length, and then inject whatever RPU I need?

Seems like the LOTR or Hobbit movies would be long enough to trim to size for just about any other movie and are all MEL.

[quietvoid]

Technically the EL has to be encoded with the same frame types and order as the BL.
There were some attempts here: https://github.com/quietvoid/dovi_tool/issues/44

It might be possible to simply "generate" an EL, but I'm not sure how involved the process would be.
I've not analyzed a zero'd out MEL stream yet.

[nekno]

Technically the EL has to be encoded with the same frame types and order as the BL.
There were some attempts here: https://github.com/quietvoid/dovi_tool/issues/44

It might be possible to simply "generate" an EL, but I'm not sure how involved the process would be.
I've not analyzed a zero'd out MEL stream yet.

Got it, thanks!

But sheesh, what a giant PITA.

If you can figure a way to reliably identify the frame types of the BL --- since that seems it might be a major obstacle currently --- then generating an EL sounds like it would be the way to go, and a fantastic feature that could solve a lot of compat problems with some players.

[ArArdin]

I also wonder if MEL maybe holds more than RPU. ATM I'm busy with a MEL DV movie. Seeing these sizes:

demuxed MEL (holding RPU) hevc stream: 1.66 GB
extracted RPU.bin: 35.3 MB

I wonder if the remaining 1,25 GB would be nothing else than mere placeholder?

[quietvoid]

I wonder if the remaining 1,25 GB would be nothing else than mere placeholder?

No.

Properly done MEL should be 69 kbps including the RPU. This usually results in 50-150MB.
Even if the EL is encoded with a higher bitrate, if it's actually MEL there's no difference to the RPU alone.

[Coopervid]

Is there any way to make these to 7.06 / Oppo compatible files?

[nekno]

@RESET_9999 --- Thank you for your package of DV tools and videos.

Could you share, what version of madVR and madMeasureHDR is included in Dolby-Vision-Tools.rar?

Where can I download new versions of madMeasureHDR.exe?

I'd like to be able to keep up on the latest tools myself.

madVR 0.92.17 doesn't include madMeasureHDR.exe.

madVRhdrMeasure40.zip doesn't appear to be available from madshi.net at the moment (or anymore?).

The latest is reportedly 1.4.5: http://madshi.net/madVRhdrMeasure145.zip

But that zip file doesn't include madMeasureHDR.exe, either.

madMeasureHDR Optimizer v4.0.2 doesn't include madMeasureHDR with it.

When I attempt to use madMeasureHDR.exe from Dolby-Vision-Tools.rar with the Optimizer app, it opens a popup when I start the work, but then closes immediately, presumably with an error.

When I copy madMeasureHDR.exe from Dolby-Vision-Tools.rar to the madVR folder with 0.92.17 installed, and run madMeasureHDR.exe on the command line, it quits immediately with the error "Could not retrieve IMeasureHDR interface."

When downloading old versions of madMeasureHDR from videohelp.com, the zip files contain the madVR DirectShow filters but no madMeasureHDR.exe.

Where to download madMeasureHDR.exe and why it isn't called madVRhdrMeasure.exe seems to be a well-kept secret.

[RESET_9999]

Could you share, what version of madVR and madMeasureHDR is included in Dolby-Vision-Tools.rar?

the version in the package is 113b, the last one before the time-limited build which I don't use. Just click on the install bat. Install lav filters as well if you haven't already.
viewtopic.php?p=117328#p117328