Dolby Vision now possible through MP4 Mux.

[RESET_9999]

Is the internal Plex app better than the modified Exoplayer for Dolby Vision playback, do you know? A friend of mine owns a LG C9 and I’m not sure which would be the better app for him to use? He doesn’t have a media library of his own so doesn’t need that feature for Plex at this time.

I never tried the modified exoplayer. I have no issue with plex on my C8 with P8 + EAC3 1536kbps TS files. Single-track P7 FEL also works but not all of them.
What I really like about plex is that I can play my DoVi remux anywhere in the world with the remote access (obviously you need fast internet).

Is there no way whatsoever to play a FEL profile 7 DV movie without using a bluray + bluray player on my LG C1 OLED?

Well, the Chromecast is not a bluray player and can do FEL.

but testing on the movie 1917 it actually looks a bit darker in DV profile 8.1 than ordinary HDR10 (maybe that's how it's supposed to look, idk...). Should I just stick to HDR10 to get rid of this headache?

DoVi is supposed to be closer to how it looked on the mastering monitor when they graded it. So unless it's the lldv bug thing, it's probably HDR10 that is too bright there because a static curve cannot adapt to the scene like DV can.

[chros]

Is there no way whatsoever to play a FEL profile 7 DV movie without using a bluray + bluray player on my LG C1 OLED?

I can get 8.1 to work on Jellyfin...

Did they publish their client for WebOS? Not according to their website: coming soon, at least for 1 year.

[nissen22]

Is there no way whatsoever to play a FEL profile 7 DV movie without using a bluray + bluray player on my LG C1 OLED?

I can get 8.1 to work on Jellyfin...

Did they publish their client for WebOS? Not according to their website: coming soon, at least for 1 year.

Yes, but it is not on the webos store. If you look at the Jellyfin github you can see how to install it using WebOS Developer Mode. It works pretty well.

[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.