Dolby Vision now possible through MP4 Mux.

[quietvoid]

So I needed to find a way to change hev1 into dvhe inside the EL video track inside the MP4 container.
I could not figure out any command or switch in mp4muxer or m4box to do so (there might be one) so I decided to go a different way.

Mentioned a while back but you could have just used the 2018 version, they just removed flagging as Dolby Vision for dual layer.
See https://github.com/quietvoid/dlb_mp4bas ... a64a6a00a5

[XTrojan]

So I needed to find a way to change hev1 into dvhe inside the EL video track inside the MP4 container.
I could not figure out any command or switch in mp4muxer or m4box to do so (there might be one) so I decided to go a different way.

Mentioned a while back but you could have just used the 2018 version, they just removed flagging as Dolby Vision for dual layer.
See https://github.com/quietvoid/dlb_mp4bas ... a64a6a00a5

Is that the only file one has to revert and then it will work for LG CX with FEL and all that?
Also, I can't find a 2018 version, seems they routinely updated it without versions :<

[quietvoid]

Is that the only file one has to revert and then it will work for LG CX with FEL and all that?
Also, I can't find a 2018 version, seems they routinely updated it without versions :<

https://github.com/DolbyLaboratories/dl ... a4eabd/bin
I don't have a CX but with a C8 it is the only required change.

[shawnc22]

Is that the only file one has to revert and then it will work for LG CX with FEL and all that?
Also, I can't find a 2018 version, seems they routinely updated it without versions :<

From all the reports so far, it looks like the CX does not have support for FEL regardless of what container you mux your video in.

[juzer7]

Is that the only file one has to revert and then it will work for LG CX with FEL and all that?
Also, I can't find a 2018 version, seems they routinely updated it without versions :<

CX does NOT support dual layer DoVi MP4
I got 3 LG OLEDs in my family.

• On B8 and C9 dual layer DoVi MP4 plays FINE.

• On BX dual layer DoVi MP4 does NOT play. It falls back into HDR.

[juzer7]

Hi, as I was curious I made one more test. I tried to mux into MP4:

• Single layer DoVi track, taken from UHD Bluray with MakeMKV

• EL layer, (dvhe) taken from the same UHD and demuxed with ffmpeg into BL+EL

Then I muxed them with mp4muxer into one MP4 file and I got this

Code: Select all

General
Complete name                            : S:\Temp\ΔTemp\_movie.mp4
Format                                   : MPEG-4
Format profile                           : Base Media / Version 2
Codec ID                                 : mp42 (isom/mp42/dby1)
File size                                : 39.5 GiB
Duration                                 : 2 h 15 min
Overall bit rate                         : 41.9 Mb/s
Encoded date                             : UTC 2021-03-08 09:03:48
Tagged date                              : UTC 2021-03-08 09:03:48

Video #1
ID                                       : 1
Format                                   : HEVC
Format/Info                              : High Efficiency Video Coding
Format profile                           : Main 10@L5.1@High
HDR format                               : Dolby Vision, Version 1.0, dvhe.07.06, BL+EL+RPU / SMPTE ST 2086, HDR10 compatible
Codec ID                                 : dvhe
Codec ID/Info                            : High Efficiency Video Coding with Dolby Vision
Duration                                 : 2 h 15 min
Bit rate                                 : 41.1 Mb/s
Width                                    : 3 840 pixels
Height                                   : 2 160 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Constant
Frame rate                               : 23.976 (24000/1001) FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0 (Type 2)
Bit depth                                : 10 bits
Bits/(Pixel*Frame)                       : 0.206
Stream size                              : 38.8 GiB (98%)
Title                                    : movie
Language                                 : English
Default                                  : Yes
Alternate group                          : 1
Encoded date                             : UTC 2021-03-08 07:55:54
Tagged date                              : UTC 2021-03-08 09:06:37
Color range                              : Limited
Color primaries                          : BT.2020
Transfer characteristics                 : PQ
Matrix coefficients                      : BT.2020 non-constant
Mastering display color primaries        : Display P3
Mastering display luminance              : min: 0.0050 cd/m2, max: 1000 cd/m2
Maximum Content Light Level              : 1000 cd/m2
Maximum Frame-Average Light Level        : 389 cd/m2
Codec configuration box                  : hvcC+dvcC+hvcE

Video #2
ID                                       : 2
Format                                   : HEVC
Format/Info                              : High Efficiency Video Coding
Format profile                           : Main 10@L5.1@High
HDR format                               : Dolby Vision, Version 1.0, dvhe.07.06, EL+RPU / SMPTE ST 2086, HDR10 compatible
Codec ID                                 : dvhe
Codec ID/Info                            : High Efficiency Video Coding with Dolby Vision
Duration                                 : 2 h 15 min
Bit rate                                 : 792 kb/s
Width                                    : 1 920 pixels
Height                                   : 1 080 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Constant
Frame rate                               : 23.976 (24000/1001) FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0 (Type 2)
Bit depth                                : 10 bits
Bits/(Pixel*Frame)                       : 0.016
Stream size                              : 765 MiB (2%)
Language                                 : English
Default                                  : No
Alternate group                          : 1
Encoded date                             : UTC 2021-03-08 07:55:54
Tagged date                              : UTC 2021-03-08 09:06:37
Color range                              : Limited
Color primaries                          : BT.2020
Transfer characteristics                 : PQ
Matrix coefficients                      : BT.2020 non-constant
Mastering display color primaries        : Display P3
Mastering display luminance              : min: 0.0050 cd/m2, max: 1000 cd/m2
Codec configuration box                  : hvcC+dvcC

I was curious if this can play at all

The effect is:

• nVidia SHIELD Pro 2019 plays it as Dolby Vision but it is stubborn to play for some reason the EL track so you just got Dolby Vision EL layer which look really strange

• Plex on C9 falls back into HDR - maybe there is too many dvhe streams in this MP4 file

[Rob9000]

Code: Select all

Video
ID                                       : 1
Format                                   : HEVC
Format/Info                              : High Efficiency Video Coding
Format profile                           : Main 10@L5.1@High
HDR format                               : Dolby Vision, Version 1.0, dvhe.07.09, BL+EL+RPU / SMPTE ST 2086, HDR10 compatible
Codec ID                                 : hev1
Codec ID/Info                            : High Efficiency Video Coding

But for me it does not play at all.. all I get is a black screen and a spinner, both in Emby and from usb disk using the builtin mediaplayer.
Something wrong with the above steps or commands?
Any help would be nice

Here is HELP

I googled for the last few hours and I could not find an answer to the same question. I muxed the BL and EL video tracks with the command:

Code: Select all

mp4muxer --dv-profile 7 -i BL.hevc -i EL.hevc --media-lang eng --output-file BL+EL.mp4

And for me the movie on my LG C9 was also not playing, showing only the "spinner" all the time. After some investigation I found that the issue might be here. After muxing the tracks into one MP4 file: BL+EL.mp4 - the EL track (2nd one) was described as:

Code: Select all

HDR format                               : Dolby Vision, Version 1.0, dvhe.07.09, BL+EL+RPU / SMPTE ST 2086, HDR10 compatible
Codec ID                                 : hev1
Codec ID/Info                            : High Efficiency Video Coding

And I found that in order for a Dolby Vision MP4 to play correctly on LG C9 it has to be like this:

Code: Select all

HDR format                               : Dolby Vision, Version 1.0, dvhe.07.09, BL+EL+RPU / SMPTE ST 2086, HDR10 compatible
Codec ID                                 : dvhe
Codec ID/Info                            : High Efficiency Video Coding with Dolby Vision

So I needed to find a way to change hev1 into dvhe inside the EL video track inside the MP4 container.
I could not figure out any command or switch in mp4muxer or m4box to do so (there might be one) so I decided to go a different way.

I downloaded HxD Editor
https://mh-nexus.de/en/hxd/

Then I opened the BL+EL.mp4 file and I went to menu Search -> Find -> Search for: "hev1" + Case sensitive (checked).
Inside an MP4 file without audio tracks (could be the same inside a file with audio tracks) it was the 2nd search result.
So after I found the first "hev1" occurance (line 01E0) I looked for the 2nd one "hev1" (F3 - Search next) which was line 00023AF00. My guess was that the video streams were written in the MP4 file in the sequence: BL and only then the 2nd one is EL.
So then I just overwrote the 2nd occurance of "hev1" into "dvhe".





After that I just saved the file File -> Save. HxD Editor will create a backup for you so you don't need to backup the file before in case something goes wrong.

After opening Plex on LG C9 voila... Dolby Vision! No more spinning wheel.

And in the MediaInfo I found:

Code: Select all

HDR format                               : Dolby Vision, Version 1.0, dvhe.07.09, BL+EL+RPU / SMPTE ST 2086, HDR10 compatible
Codec ID                                 : dvhe
Codec ID/Info                            : High Efficiency Video Coding with Dolby Vision

I hope someone will find it helpful.

Thanks for this. But it's curious. I have a C9 and have been muxing DV MP4 using the same program. The codec ID is hev1 and the 3 muxes i have done so far (Hobbit trilogy) play in DV just fine on my C9 via Plex.

[Rob9000]

Here is the media info for the mp4 that plays back in DV on my C9:

General
Complete name : *****.mp4
Format : MPEG-4
Format profile : Base Media / Version 2
Codec ID : mp42 (mp42/dby1/isom)
File size : 63.7 GiB
Duration : 3 h 2 min
Overall bit rate : 50.0 Mb/s
Encoded date : UTC 2021-03-03 15:24:56
Tagged date : UTC 2021-03-03 15:24:56

Video #1
ID : 1
Format : HEVC
Format/Info : High Efficiency Video Coding
Format profile : Main 10@L5.1@High
HDR format : SMPTE ST 2086, HDR10 compatible
Codec ID : hev1
Codec ID/Info : High Efficiency Video Coding
Duration : 3 h 2 min
Bit rate : 49.5 Mb/s
Width : 3 840 pixels
Height : 2 160 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0 (Type 2)
Bit depth : 10 bits
Bits/(Pixel*Frame) : 0.249
Stream size : 63.0 GiB (99%)
Default : No
Encoded date : UTC 2021-03-03 15:24:56
Tagged date : UTC 2021-03-03 15:24:56
Color range : Limited
Color primaries : BT.2020
Transfer characteristics : PQ
Matrix coefficients : BT.2020 non-constant
Mastering display color primaries : Display P3
Mastering display luminance : min: 0.0050 cd/m2, max: 4000 cd/m2
Maximum Content Light Level : 801 cd/m2
Maximum Frame-Average Light Level : 188 cd/m2
Codec configuration box : hvcC

Video #2
ID : 2
Format : HEVC
Format/Info : High Efficiency Video Coding
Format profile : Main 10@L5.1@High
HDR format : Dolby Vision, Version 1.0, dvhe.07.06, EL+RPU, Blu-ray compatible / SMPTE ST 2086, HDR10 compatible
Codec ID : dvhe
Codec ID/Info : High Efficiency Video Coding with Dolby Vision
Duration : 3 h 2 min
Bit rate : 69.4 kb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0 (Type 2)
Bit depth : 10 bits
Bits/(Pixel*Frame) : 0.001
Stream size : 90.6 MiB (0%)
Default : No
Encoded date : UTC 2021-03-03 15:24:56
Tagged date : UTC 2021-03-03 15:24:56
Color range : Limited
Color primaries : BT.2020
Transfer characteristics : PQ
Matrix coefficients : BT.2020 non-constant
Mastering display color primaries : Display P3
Mastering display luminance : min: 0.0050 cd/m2, max: 4000 cd/m2
Codec configuration box : hvcC+dvcC

Audio
ID : 3
Format : AC-3
Format/Info : Audio Coding 3
Commercial name : Dolby Digital
Codec ID : ac-3
Duration : 3 h 2 min
Bit rate mode : Constant
Bit rate : 448 kb/s
Channel(s) : 6 channels
Channel layout : L R C LFE Ls Rs
Sampling rate : 48.0 kHz
Frame rate : 31.250 FPS (1536 SPF)
Compression mode : Lossy
Stream size : 585 MiB (1%)
Language : English
Service kind : Complete Main
Default : No
Encoded date : UTC 2021-03-03 15:24:56
Tagged date : UTC 2021-03-03 15:24:56

[MartyMcNuts]

Here is the media info for the mp4 that plays back in DV on my C9:

General
Complete name : *****.mp4
Format : MPEG-4
Format profile : Base Media / Version 2
Codec ID : mp42 (mp42/dby1/isom)
File size : 63.7 GiB
Duration : 3 h 2 min
Overall bit rate : 50.0 Mb/s
Encoded date : UTC 2021-03-03 15:24:56
Tagged date : UTC 2021-03-03 15:24:56

Video #1
ID : 1
Format : HEVC
Format/Info : High Efficiency Video Coding
Format profile : Main 10@L5.1@High
HDR format : SMPTE ST 2086, HDR10 compatible
Codec ID : hev1
Codec ID/Info : High Efficiency Video Coding
Duration : 3 h 2 min
Bit rate : 49.5 Mb/s
Width : 3 840 pixels
Height : 2 160 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0 (Type 2)
Bit depth : 10 bits
Bits/(Pixel*Frame) : 0.249
Stream size : 63.0 GiB (99%)
Default : No
Encoded date : UTC 2021-03-03 15:24:56
Tagged date : UTC 2021-03-03 15:24:56
Color range : Limited
Color primaries : BT.2020
Transfer characteristics : PQ
Matrix coefficients : BT.2020 non-constant
Mastering display color primaries : Display P3
Mastering display luminance : min: 0.0050 cd/m2, max: 4000 cd/m2
Maximum Content Light Level : 801 cd/m2
Maximum Frame-Average Light Level : 188 cd/m2
Codec configuration box : hvcC

Video #2
ID : 2
Format : HEVC
Format/Info : High Efficiency Video Coding
Format profile : Main 10@L5.1@High
HDR format : Dolby Vision, Version 1.0, dvhe.07.06, EL+RPU, Blu-ray compatible / SMPTE ST 2086, HDR10 compatible
Codec ID : dvhe
Codec ID/Info : High Efficiency Video Coding with Dolby Vision
Duration : 3 h 2 min
Bit rate : 69.4 kb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0 (Type 2)
Bit depth : 10 bits
Bits/(Pixel*Frame) : 0.001
Stream size : 90.6 MiB (0%)
Default : No
Encoded date : UTC 2021-03-03 15:24:56
Tagged date : UTC 2021-03-03 15:24:56
Color range : Limited
Color primaries : BT.2020
Transfer characteristics : PQ
Matrix coefficients : BT.2020 non-constant
Mastering display color primaries : Display P3
Mastering display luminance : min: 0.0050 cd/m2, max: 4000 cd/m2
Codec configuration box : hvcC+dvcC

Audio
ID : 3
Format : AC-3
Format/Info : Audio Coding 3
Commercial name : Dolby Digital
Codec ID : ac-3
Duration : 3 h 2 min
Bit rate mode : Constant
Bit rate : 448 kb/s
Channel(s) : 6 channels
Channel layout : L R C LFE Ls Rs
Sampling rate : 48.0 kHz
Frame rate : 31.250 FPS (1536 SPF)
Compression mode : Lossy
Stream size : 585 MiB (1%)
Language : English
Service kind : Complete Main
Default : No
Encoded date : UTC 2021-03-03 15:24:56
Tagged date : UTC 2021-03-03 15:24:56

That's because your file is already correct. His file had both layers as 'hev1' where the EL should be 'dvhe', thus the reason he changed it in hex editor.

[Rob9000]

I see now. Thanks

[NiCE77]

I tried the new Ugoos 0.40 fw mod on Minix and from now on just use Plex, DV playback is perfect from STDL MEL/FEL ts, mp4 and mkv too.

[RESET_9999]

I tried the new Ugoos 0.40 fw mod on Minix and from now on just use Plex, DV playback is perfect from STDL MEL/FEL ts, mp4 and mkv too.

What about the AM6 plus ? still won't trigger DV with MKV files ?
I ordered one btw, should get it by March 16th according to the tracking number.

[NiCE77]

I tried the new Ugoos 0.40 fw mod on Minix and from now on just use Plex, DV playback is perfect from STDL MEL/FEL ts, mp4 and mkv too.

What about the AM6 plus ? still won't trigger DV with MKV files ?
I ordered one btw, should get it by March 16th according to the tracking number.

AM6 Plus with 0.40 fw triggers DV with MKV files, same as Minix.

[bobbymkV]

I tried the new Ugoos 0.40 fw mod on Minix and from now on just use Plex, DV playback is perfect from STDL MEL/FEL ts, mp4 and mkv too.

You think it would be safe to assume that the Kodi DV builds would work like they do on the Shield? I need the ability to transcode DTS audio (thanks Sonos).

[RESET_9999]

AM6 Plus with 0.40 fw triggers DV with MKV files, same as Minix.

ha right! I mixed up what works and what doesn't work...
so it's lossless audio that doesn't work on plex but it works on kodi.