Dolby Vision now possible through MP4 Mux.

[RESET_9999]

Hey yusesope
my ffmpeg bug (https://trac.ffmpeg.org/ticket/8051) regarding implementation of a truehd substream just got closed with this commit http://git.videolan.org/?p=ffmpeg.git;a ... 7f4973d619 - TRUE HD ist now a supported format in the mp4 container!

this is great news. let's hope yusesope can do his magic.

[MastaG]

Lets compile!!!!

[yusesope]

Hey yusesope
my ffmpeg bug (https://trac.ffmpeg.org/ticket/8051) regarding implementation of a truehd substream just got closed with this commit http://git.videolan.org/?p=ffmpeg.git;a ... 7f4973d619 - TRUE HD ist now a supported format in the mp4 container!

Thanks for the update!

I did a test using the "Amaze ATMOS" demo and compiling FFmpeg from the Git repository (master branch).
The following command allows you to mux the ATMOS track inside the mp4 container

Code: Select all

ffmpeg.exe -i amaze.mkv -c copy -strict -2 amaze.mp4

There seems to be some issue with the output (take a look at the mediainfo).
I could not play the audio of the file (neither on the PC using the latest LAV Filters nor on the TV).

ORIGINAL FILE (HERE)

Code: Select all

Nome completo                           : amaze.mkv
Formato                                 : Matroska
Versione formato                        : Version 4 / Version 2
Dimensione                              : 140MiB
Durata                                  : 1 min 3s
Modo bitrate generale                   : Variabile
Bitrate totale                          : 18,4 Mb/s
Data codifica                           : UTC 2015-08-29 18:05:24
Creato con                              : mkvmerge v8.3.0 ('Over the Horizon') 64bit
Compressore                             : libebml v1.3.1 + libmatroska v1.4.2

Video
ID                                      : 1
Formato                                 : AVC
Formato/Informazioni                    : Advanced Video Codec
Profilo formato                         : High@L4.1
Impostazioni formato, CABAC             : Si
Impostazioni formato, ReFrames          : 4 frame
ID codec                                : V_MPEG4/ISO/AVC
Durata                                  : 1 min 3s
Modalità bitrate                        : Variabile
Bitrate                                 : 11,7 Mb/s
Bitrate massimo                         : 40,0 Mb/s
Larghezza                               : 1.920 pixel
Altezza                                 : 1.080 pixel
Rapporto aspetto visualizzazione        : 16:9
Modalità frame rate                     : Costante
Frame rate                              : 24,000 FPS
Spazio colore                           : YUV
Croma subsampling                       : 4:2:0
Profondità bit                          : 8 bit
Tipo scansione                          : Progressivo
Bit/(pixel*frame)                       : 0.235
Dimensione della traccia                : 88,4MiB (63%)
Lingua                                  : Inglese
Default                                 : Si
Forced                                  : No

Audio
ID                                      : 2
Formato                                 : TrueHD
Profilo formato                         : TrueHD+Atmos / TrueHD
ID codec                                : A_TRUEHD
Durata                                  : 1 min 3s
Modalità bitrate                        : Variabile
Bitrate                                 : 6.694 kb/s
Bitrate massimo                         : 9.096 kb/s
Canali                                  : Object Based / 8 canali
Posizione canali                        : Object Based / Front: L C R, Side: L R, Back: L R, LFE
Frequenza campionamento                 :  / 48,0 kHz
Frame rate                              : 1.200,000 FPS (40 spf)
Modo compressione                       : Senza perdita
Dimensione della traccia                : 50,7MiB (36%)
Default                                 : Si
Forced                                  : No

MP4 MUX (HERE)

Code: Select all

Nome completo                           : amaze.mp4
Formato                                 : MPEG-4
Profilo formato                         : Base Media
ID codec                                : isom (isom/iso2/avc1/mp41)
Dimensione                              : 139MiB
Durata                                  : 1 min 3s
Modo bitrate generale                   : Variabile
Bitrate totale                          : 18,4 Mb/s
Creato con                              : Lavf58.31.104

Video
ID                                      : 1
Formato                                 : AVC
Formato/Informazioni                    : Advanced Video Codec
Profilo formato                         : High@L4.1
Impostazioni formato, CABAC             : Si
Impostazioni formato, ReFrames          : 4 frame
ID codec                                : avc1
ID codec/Informazioni                   : Advanced Video Coding
Durata                                  : 1 min 3s
Modalità bitrate                        : Variabile
Bitrate                                 : 11,7 Mb/s
Bitrate massimo                         : 40,0 Mb/s
Larghezza                               : 1.920 pixel
Altezza                                 : 1.080 pixel
Rapporto aspetto visualizzazione        : 16:9
Modalità frame rate                     : Variabile
Frame rate                              : 24,000 FPS
Frame rate minimo                       : 23,634 FPS
Frame rate massimo                      : 24,390 FPS
Spazio colore                           : YUV
Croma subsampling                       : 4:2:0
Profondità bit                          : 8 bit
Tipo scansione                          : Progressivo
Bit/(pixel*frame)                       : 0.235
Dimensione della traccia                : 88,4MiB (63%)
Lingua                                  : Inglese

Audio
ID                                      : 2
Formato                                 : mlpa
ID codec                                : mlpa
Durata                                  : 1 min 3s
Bitrate                                 : 6.694 kb/s
Canali                                  : 2 canali
Frequenza campionamento                 : 0 Hz
Profondità bit                          : 16 bit
Dimensione della traccia                : 50,7MiB (36%)
Default                                 : Si
AlternateGroup/String                   : 1

MP4Box recognizes the mlpa track and allows the mux inside the mp4 container but, as I said before, I can't play audio.

[RESET_9999]

I'm getting the same result ... I'm still going to try it on the oled tonight...




EDIT:, nop, no go in the TV(which supports atmos and dts=x). no audio detected....
But it's still a step in the right direction. FFmpeg dev should be able to fix that.

[MastaG]

I'm getting the same result ... im still going to try it on the oled tonight...

Please keep us posted

[MastaG]

So I've compiled ffmpeg from git.

I now saved the truehd audio track from Alita to a new mp4 container.

Code: Select all

Input #0, mpegts, from 'bluray:./':
  Duration: 00:03:28.21, start: 11.646667, bitrate: 2251891 kb/s
  Program 1 
    Stream #0:0[0x1011]: Video: hevc (Main 10) (HDMV / 0x564D4448), yuv420p10le(tv, bt2020nc/bt2020/smpte2084), 3840x2160 [SAR 1:1 DAR 16:9], 23.98 fps, 23.98 tbr, 90k tbn, 23.98 tbc
    Stream #0:1[0x1015]: Video: hevc (Main 10) (HDMV / 0x564D4448), yuv420p10le(tv, bt2020nc/bt2020/smpte2084), 1920x1080 [SAR 1:1 DAR 16:9], 23.98 fps, 23.98 tbr, 90k tbn, 23.98 tbc
    Stream #0:2[0x1100]: Audio: truehd (AC-3 / 0x332D4341), 48000 Hz, 7.1, s32 (24 bit)
    Stream #0:3[0x1100]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 5.1(side), fltp, 640 kb/s
....

It's the truehd one at 0:2.

So by simply doing:

Code: Select all

ffmpeg -i bluray:./ -map 0:2 -c copy -strict -2 ../alita_demux/truehd.mp4

It will mux the truehd track into a "new" container:

Code: Select all

Output #0, mp4, to '../alita_demux/truehd.mp4':
  Metadata:
    encoder         : Lavf58.31.104
    Stream #0:0: Audio: truehd (mlpa / 0x61706C6D), 48000 Hz, 7.1, s32 (24 bit)
Stream mapping:
  Stream #0:2 -> #0:0 (copy)
Press [q] to stop, [?] for help
size= 4540858kB time=02:01:57.31 bitrate=5083.7kbits/s speed=14.2x    
video:0kB audio:4506193kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.769282%

So now what?
I now use MP4Box to mux the truehd stream from the truehd.mp4 container into my DV mp4 container which I've created with dolby mp4muxer?

[MastaG]

Well I tried to add the truehd track with MP4Box.
So for the record:
alita.dv.mp4 - The DV movie created with Dolby's mp4muxer (from the base-layer and enhanced-layer), only contains the two video layers
truehd.mp4 - The TrueHD audio track muxed into a mp4 container with ffmpeg: ffmpeg -i bluray:./ -map 0:2 -c copy -strict -2 truehd.mp4
dolby.ac3 - The Dolby Digital 5.1 audio track saved with ffmpeg: ffmpeg -i bluray:./ -map 0:3 -c copy dolby.ac3

Code: Select all

MP4Box -add alita.dv.mp4:rate=0 -add truehd.mp4#audio:lang=en-US -add dolby.ac3#audio:lang=en-US -no-iod Alita.Battle.Angel.2019.DV.TrueHD.AC3.mp4

[iso file] Unknown box type hvcC in parent dvhe
[iso file] dvcC reserved bytes are not zero
[iso file] Unknown box type hvcC in parent dvhe
[iso file] dvcC reserved bytes are not zero
IsoMedia import alita.dv.mp4 - track ID 1 - Video (size 3840 x 2160)
[iso file] Unknown box type hvcC in parent dvhe           
[iso file] dvcC reserved bytes are not zero
IsoMedia import alita.dv.mp4 - track ID 2 - Video (size 1920 x 1080)
[iso file] Unknown box type mlpa in parent stsd           
[iso file] Unknown box type mlpa in parent stsd
IsoMedia import truehd.mp4 - track ID 1 - Audio (SR 0 - 2 channels)
AC3 import - sample rate 48000 - 5.1 channels             
Saving to Alita.Battle.Angel.2019.DV.TrueHD.AC3.mp4: 0.500 secs Interleaving

I think MP4Box somehow messed up:

Code: Select all

General
Complete name                            : Alita.Battle.Angel.2019.DV.TrueHD.AC3.mp4
Format                                   : MPEG-4
Format profile                           : Base Media
Codec ID                                 : isom (isom)
File size                                : 41.9 GiB
Duration                                 : 2 h 1 min
Overall bit rate                         : 49.2 Mb/s
Encoded date                             : UTC 2019-08-27 09:08:56
Tagged date                              : UTC 2019-08-27 09:08:56

Video #1
ID                                       : 1
Format                                   : HEVC
Format/Info                              : High Efficiency Video Coding
Format profile                           : Main 10@L5.1@High
HDR format                               : SMPTE ST 2094 App 4, Version 1, HDR10+ Profile A compatible
Codec ID                                 : hev1
Codec ID/Info                            : High Efficiency Video Coding
Duration                                 : 2 h 1 min
Bit rate                                 : 41.4 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)                       : 0.208
Stream size                              : 35.2 GiB (84%)
Default                                  : No
Encoded date                             : UTC 2019-08-08 13:26:09
Tagged date                              : UTC 2019-08-27 09:20:15
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: 0.0001 cd/m2, max: 1000 cd/m2
Maximum Content Light Level              : 233 cd/m2
Maximum Frame-Average Light Level        : 63 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 / SMPTE ST 2086, HDR10 compatible
Codec ID                                 : dvhe
Codec ID/Info                            : High Efficiency Video Coding with Dolby Vision
Duration                                 : 2 h 1 min
Bit rate                                 : 2 135 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)                       : 0.043
Stream size                              : 1.82 GiB (4%)
Default                                  : No
Encoded date                             : UTC 2019-08-08 13:26:09
Tagged date                              : UTC 2019-08-27 09:20:15
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: 0.0001 cd/m2, max: 1000 cd/m2
Codec configuration box                  : hvcC+dvcC

Audio #1
ID                                       : 3
Format                                   : mlpa
Codec ID                                 : mlpa
Duration                                 : 2 h 1 min
Bit rate                                 : 5 045 kb/s
Maximum bit rate                         : 9 828 kb/s
Channel(s)                               : 2 channels
Sampling rate                            : 158 kHz
Bit depth                                : 16 bits
Stream size                              : 4.30 GiB (10%)
Language                                 : English
Default                                  : Yes
Alternate group                          : 1
Tagged date                              : UTC 2019-08-27 09:20:15

Audio #2
ID                                       : 4
Format                                   : AC-3
Format/Info                              : Audio Coding 3
Commercial name                          : Dolby Digital
Codec ID                                 : ac-3
Duration                                 : 2 h 1 min
Bit rate mode                            : Constant
Bit rate                                 : 640 kb/s
Maximum bit rate                         : 676 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)
Bit depth                                : 16 bits
Compression mode                         : Lossy
Stream size                              : 558 MiB (1%)
Title                                    : ac3#audio:lang=en-US@GPAC0.8.0-revrelease
Language                                 : English
Service kind                             : Complete Main
Encoded date                             : UTC 2019-08-27 09:20:14
Tagged date                              : UTC 2019-08-27 09:20:15

As it reports the truehd (mlpa) track as 2-channels instead of 7.1

EDIT:
Here's the information regarding the truehd.mp4 container which contains the truehd track:

Code: Select all

General
Complete name                            : truehd.mp4
Format                                   : MPEG-4
Format profile                           : Base Media
Codec ID                                 : isom (isom/iso2/mp41)
File size                                : 4.33 GiB
Duration                                 : 2 h 1 min
Overall bit rate                         : 5 084 kb/s
Writing application                      : Lavf58.31.104

Audio
ID                                       : 1
Format                                   : mlpa
Codec ID                                 : mlpa
Duration                                 : 2 h 1 min
Bit rate                                 : 5 045 kb/s
Channel(s)                               : 2 channels
Sampling rate                            : 158 kHz
Bit depth                                : 16 bits
Stream size                              : 4.30 GiB (99%)
Default                                  : Yes
Alternate group                          : 1

So it looks like FFMpeg still needs some work as the codec ID should be: A_TRUEHD and it sohuld at least report 7.1 channels...

[bl4ck]

@MastaG
What linux you use? maybe you can help me compile dlb_mp4base

I use 4.19.66-1-MANJARO x86_64 GNU/Linux and my error:

Code: Select all

linux_amd64]$ make mp4muxer_release
make: *** Brak reguł do zrobienia obiektu '../../../../dlb_mp4base/frontend/mp4_muxer_app.c', wymaganego przez 'obj/mp4muxer_release/mp4_muxer_app.o'. Stop.

[yusesope]

@MastaG
What linux you use? maybe you can help me compile dlb_mp4base

I use 4.19.66-1-MANJARO x86_64 GNU/Linux and my error:

Code: Select all

linux_amd64]$ make mp4muxer_release
make: *** Brak reguł do zrobienia obiektu '../../../../dlb_mp4base/frontend/mp4_muxer_app.c', wymaganego przez 'obj/mp4muxer_release/mp4_muxer_app.o'. Stop.

Did you run the "make" command inside the appropriate directory?

Code: Select all

git clone https://github.com/DolbyLaboratories/dlb_mp4base.git
cd dlb_mp4base/make/mp4muxer/linux_amd64
make mp4muxer_release

[bl4ck]

Yep I tried git clone again now it is ok, thx.

[yusesope]

Yep I tried git clone again now it is ok, thx.

You're welcome!

So it looks like FFMpeg still needs some work as the codec ID should be: A_TRUEHD and it sohuld at least report 7.1 channels...

A_TRUEHD is a codec tag used for the matroska container. I think the MPLA id is the right one. I don't know if out there there is a player that can start playing an audio track with this codec descriptor: if a device (like ours TVs) is unable to do so, it will need a firmware update (don't worry...it won't happen).

It seems to me that we're stuck at the same point...

[mercwithamouth]

I used DVDFab's UHD Copy to burn a movie file onto a blank Blu-ray disc yesterday and, as it turns out, it keeps the Dolby Vision AND the lossless Dolby Atmos track. I downloaded Rocketman (found an HEVC upload of it, which is the entire disc including Dolby Vision), and after burning a copy onto the blank disc, I played it on my Sony UBP-X700 Blu-ray player. Sure enough, this popped up. I have yet to test a rip of one of my 4K Blu-rays, but I'm sure it'll work roughly the same.

[Redhawk2000]

Just a lurker here just paying attention to see if this ever really works fully. Sorry to ask a quick hijacking question but I wonder if it might be answered by what is necessary in the efforts of those trying to figure this out: Is it possible with freeware (or cheapware) to convert lpcm (actually flac) to Dolby true HD losslessly? Obviously wouldn't have Atmos metadata. Thanks.

[RESET_9999]

I used DVDFab's UHD Copy to burn a movie file onto a blank Blu-ray disc yesterday and, as it turns out, it keeps the Dolby Vision AND the lossless Dolby Atmos track. I downloaded Rocketman (found an HEVC upload of it, which is the entire disc including Dolby Vision), and after burning a copy onto the blank disc, I played it on my Sony UBP-X700 Blu-ray player. Sure enough, this popped up. I have yet to test a rip of one of my 4K Blu-rays, but I'm sure it'll work roughly the same.

I do the same when a movie fit a BD-50 but almost all the movies are larger than that(even without all the audio and menu) and triple-layer BD-R are very expensive. yes, you can encode it to fit a BD-50 or even a BD-25 but it's not an option when you only want to watch the best quality possible.

[Woodstock]

Is it possible with freeware (or cheapware) to convert lpcm (actually flac) to Dolby true HD losslessly?

Freeware, no. Dolby TrueHD is proprietary, and there is no current free alternative to buying a license from Dolby.