Does MakeMKV support Atmos Dolby Digital Plus Streams?

[Dazkine]

I got a Disk with DD+ Atmos Track. TrueHD Atmos works and you can see what MMKV recognize Atmos, but with DD+ there it says no Atmos.

Any clues?

[Meister_Proper]

Did you try to remux it anyway? What does mediainfo say?

[Dazkine]

Code: Select all

Audio #1 
ID : 2 
Format : E-AC-3 
Format/Info : Enhanced Audio Coding 3 
Format profile : E-AC-3+Atmos / E-AC-3 
Format settings, Endianness : Big 
Codec ID : A_EAC3 
Duration : 1 h 50 min 
Bit rate mode : Constant 
Bit rate : 500 b/s 
Channel(s) : 8 channels 
Channel(s)_Original : 11 objects / 6 channels 
Channel positions : 11 objects / Front: L C R, Side: L R, LFE 
Sampling rate : 48.0 kHz 
Frame rate : 187.500 FPS (256 SPF) 
Compression mode : Lossy 
Stream size : 907 MiB (4%) 
Title : Surround 7.1 
Language : German 
Service kind : Complete Main 
Default : Yes 
Forced : No 

That is what Mediainfo says. But MakeMKV does not recognize the Atmos informations

[spl147]

Code: Select all

Audio #1 
ID : 2 
Format : E-AC-3 
Format/Info : Enhanced Audio Coding 3 
Format profile : E-AC-3+Atmos / E-AC-3 
Format settings, Endianness : Big 
Codec ID : A_EAC3 
Duration : 1 h 50 min 
Bit rate mode : Constant 
Bit rate : 500 b/s 
Channel(s) : 8 channels 
Channel(s)_Original : 11 objects / 6 channels 
Channel positions : 11 objects / Front: L C R, Side: L R, LFE 
Sampling rate : 48.0 kHz 
Frame rate : 187.500 FPS (256 SPF) 
Compression mode : Lossy 
Stream size : 907 MiB (4%) 
Title : Surround 7.1 
Language : German 
Service kind : Complete Main 
Default : Yes 
Forced : No 

That is what Mediainfo says. But MakeMKV does not recognize the Atmos informations

That is Not a Atmos track. Atmos is a Extension of TrueHD, AC3 is the Core of Dolby Digital.

ATMOS ia LossLess

here is a Atmos Track

Code: Select all

Audio #1
ID                                       : 2
ID in the original source medium         : 4352 (0x1100)
Format                                   : TrueHD
Format profile                           : TrueHD+Atmos / TrueHD
Codec ID                                 : A_TRUEHD
Duration                                 : 2h 24mn
Bit rate mode                            : Variable
Bit rate                                 : 4 641 Kbps
Maximum bit rate                         : 7 500 Kbps
Channel(s)                               : Object Based / 8 channels
Channel positions                        : Object Based / Front: L C R, Side: L R, Back: L R, LFE
Sampling rate                            :  / 48.0 KHz
Frame rate                               : 1 200.000 fps (40 SPF)
Bit depth                                : 24 bits
Compression mode                         : Lossless
Stream size                              : 4.68 GiB (15%)
Title                                    : Surround 7.1
Language                                 : English
Default                                  : Yes
Forced                                   : No
Original source medium                   : Blu-ray

[Dazkine]

Nope that isn true. Atmos works with DD+ as well...

[trumpet205]

I got a Disk with DD+ Atmos Track. TrueHD Atmos works and you can see what MMKV recognize Atmos, but with DD+ there it says no Atmos.

Any clues?

It does not matter what MakeMKV says. What matters is if the receiver picks up Atmos. Have you actually test it on the receiver?

Atmos is just metadata. It does not need explicit support from MakeMKV. In fact your MediaInfo shows that it is indeed an Atmos track (DD+ Atmos).

That is Not a Atmos track. Atmos is a Extension of TrueHD, AC3 is the Core of Dolby Digital.

ATMOS ia LossLess

You are wrong here. Atmos can be applied to E-AC3 as well.

In fact, Dolby is providing sample files for people to test it on their receiver.

https://www.dolby.com/us/en/guide/test-tones.html

Code: Select all

General
Complete name                  : E:\dolby-test-tones_5_1_2.mp4
Format                         : MPEG-4
Format profile                 : Base Media / Version 2
Codec ID                       : mp42 (mp42/dby1/isom)
File size                      : 116 MiB
Duration                       : 8 min 23 s
Overall bit rate               : 1 926 kb/s
Encoded date                   : UTC 2017-01-23 18:50:03
Tagged date                    : UTC 2017-01-23 18:50:03

Video
ID                             : 1
Format                         : AVC
Format/Info                    : Advanced Video Codec
Format profile                 : Main@L4.1
Format settings, CABAC         : Yes
Format settings, RefFrames     : 3 frames
Format settings, GOP           : M=4, N=24
Codec ID                       : avc1
Codec ID/Info                  : Advanced Video Coding
Duration                       : 8 min 20 s
Bit rate                       : 1 485 kb/s
Width                          : 1 920 pixels
Height                         : 1 080 pixels
Display aspect ratio           : 16:9
Frame rate mode                : Constant
Frame rate                     : 24.000 FPS
Standard                       : NTSC
Color space                    : YUV
Chroma subsampling             : 4:2:0
Bit depth                      : 8 bits
Scan type                      : Progressive
Bits/(Pixel*Frame)             : 0.030
Stream size                    : 88.6 MiB (77%)
Default                        : Yes
Alternate group                : 1
Encoded date                   : UTC 2017-01-23 18:50:03
Tagged date                    : UTC 2017-01-23 18:50:03
Color range                    : Limited
Color primaries                : BT.709
Transfer characteristics       : BT.709
Matrix coefficients            : BT.709

Audio
ID                             : 2
Format                         : E-AC-3
Format/Info                    : Enhanced Audio Coding 3
Format profile                 : E-AC-3+Atmos / E-AC-3
Format settings, Endianness    : Big
Codec ID                       : ec-3
Duration                       : 8 min 23 s
Bit rate mode                  : Constant
Bit rate                       : 448 kb/s
Channel(s)                     : 15 objects / 6 channels
Channel positions              : 15 objects / Front: L C R, Side: L R, LFE
Sampling rate                  : 48.0 kHz
Frame rate                     : 187.500 FPS (256 SPF)
Bit depth                      : 16 bits
Compression mode               : Lossy
Stream size                    : 26.9 MiB (23%)
Service kind                   : Complete Main
Default                        : Yes
Alternate group                : 2
Encoded date                   : UTC 2017-01-23 18:50:03
Tagged date                    : UTC 2017-01-23 18:50:03

Atmos is just metadata. There is nothing lossless or lossy about it. It can be used on DD+, not just TrueHD.