MMH Version 6.3 - New Dolby Atmos Helper tool & updated Multchannel Remix tool

[HomerJAU]

I don't understand then why the m4a files

The MKV to m4a with MMH Extract Audio from MKV is lossless 24bit TrueHD Atmos

You are encoding to lossy Dolby Digital Plus 16bit with DDE.

Why do you think lossy should be same size as lossless?

 

[yerbas07]

The MKV to m4a with MMH Extract Audio from MKV is lossless 24bit TrueHD Atmos

The question is whether this m4a atmos lossless, achieved in this way, preserves the metadata of the spatiality of the original BD.

 

[HomerJAU]

Yes. MMH just takes the original TrueHD stream and copies it to an mpeg container. This is a copy of the stream on the disc and is identical to the stream played by a BD player. There is no decode/encode.

 

[yerbas07]

Yes. MMH just takes the original TrueHD stream and copies it to an mpeg container. This is a copy of the stream on the disc and is identical to the stream played by a BD player. There is no decode/encode.

The thing is that this m4a 24/48 atmos lossless is not playable by portable dacs (daps, like Shanling M6 ultra). So, I need a m4a atmos lossy 16/48 (5.1 or 7.1) that is readable by daps, but keeps the original spatial metadata, how can I get it?

 

[HomerJAU]

Why do you need Atmos mixes for your dacs? The one you mention is stereo only? If you want to listen to hires stereo rip the stereo stream.

Your players are probably expecting ALAC in the m4a not Dolby Encoded streams. The MMH tool copies stream’s codec to m4a it doesn’t actually convert to any other codec like ALAC etc.

 

[yerbas07]

Why do you need Atmos mixes for your dacs? The one you mention is stereo only? If you want to listen to hires stereo rip the stereo stream.

Your players are probably expecting ALAC in the m4a not Dolby Encoded streams. The MMH tool copies stream’s codec to m4a it doesn’t actually convert to any other codec like ALAC etc.

I have some conclusions about ATMOS m4a format from an Atmos BD, please correct me if they are not true.
1. To get Atmos lossless m4a you have to use MMH Extract MKV. The original spatial metadata is preserved.
2. For m4a lossy Atmos 5.1, even 7.1, use DEE in MMH, but the metadata is not the original. This way you get Pseudo Atmos or an approximation to the original Atmos.

In short, Atmos m4a lossy has to be downloaded somehow from Tidal, Apple or bought from Inmersive AA web, because there is no way to rip the original BD to m4a lossy while preserving the original metadata.

 

[yerbas07]

I have tried BD Atmos--> Atmos lossless m4a obtained via MMH --> Extract Audio from MKV and the KODI 211 player (PC-Windows10) is only able to play the first track of the BD album. The same happens with Kodi 2.1 on my iphone, it only plays the first track, the rest are not read.

 

[DuncanS]

More and more confused. I don't understand then why the m4a files I get with DEE from wav 7.1 decoding MKV tell me MediaInfo:
1664Kbps, 48Khz 8channels E-AC-3 JOC (Blu-Ray Disc)(Dolby Digital Plus with Dolby Atmos)
JOC are not metadata?

Looking at https://professionalsupport.dolby.c...#:~:text=Dolby Digital Plus JOC (Joint Object

I think that,

MediaInfo is just reporting your file as JOC Dolby Digital Plus with Atmos capable, so it is saying it is a file format which can handle Atmos, it is not saying it is definitely an Atmos file, as MediaInfo can't see or read any embedded metadata it just looks at the file type format.

For Dolby Atmos with height audio you would also need new OAMD information which you don't have as you are creating an Atmos file from a 7.1 file so you have no height metadata the height audio x.x.4 is mixed in to the 7.1 audio it cannot be separated from it.

So you are taking a 7.1.4 Atmos file and creating a 7.1 wav file which going through DEE produces a 7.1 Atmos file.

 

[HomerJAU]

So you are taking a 7.1.4 Atmos file and creating a 7.1 wav file which going through DEE produces a 7.1 Atmos file.

If he is has a 7.1.4 system:
Using MMH Atmos Helper and DRP to decode to 7.1.4 then DRP uses metadata to recreate the channel info same as your AVR. (Playing the Atmos original vs 7.1.4 decode should sound identical in 7.1.4).
Now reencoding the decode to Atmos using Atmos Helper and DEE to DDP JOC as 7.1.4 should have same mix as the decode so if you play back on a 7.1.4 system it should sound same as original (except it’s now lossy and no metadata, but metadata was used in the decode so channels data should match. At the end of the day we can only play Atmos Objects from our Speakers (Channels)!

But he says he’s using a stereo DAC so not sure why he wants to play Atmos files in stereo?

 

[himey]

But he says he’s using a stereo DAC so not sure why he wants to play Atmos files in stereo

Simply decoding the original to stereo makes more sense playing it back on a phone. I don't know much about streaming Atmos to headphones on a phone, but I'm pretty sure they are a different format, AC4 I think.

 

[buddhaquadra]

Hi,
I need to import in proper way in Davinci Resolve the export from MMH Atmos Helper.

MMH Atmos Helper output is:

ATMOS_ENG_01.L.wav
ATMOS_ENG_02.R.wav
ATMOS_ENG_03.C.wav
ATMOS_ENG_04.LFE.wav
ATMOS_ENG_05.Ls.wav
ATMOS_ENG_06.Rs.wav
ATMOS_ENG_07.Lrs.wav
ATMOS_ENG_08.Rrs.wav
ATMOS_ENG_09.Lw.wav
ATMOS_ENG_10.Rw.wav
ATMOS_ENG_11.Tfl.wav
ATMOS_ENG_12.Tfr.wav
ATMOS_ENG_13.Tcl.wav
ATMOS_ENG_14.Tcr.wav
ATMOS_ENG_15.Tbl.wav
ATMOS_ENG_16.Tbr.wav

Is correct the association "Davinci Resolve channel names" (gray names) with "MMH Atmos Helper file names" (white names)?

More info:

Dolby ATMOS channels names (and all 16 channels names) for 9.1.6 are here (PDF page 4): --> https://dolby.my.salesforce.com/sfc...3/8F48N5sE8tHpT3Dw.UFcoMCQ5ccRvWYSrZ5oKEIA1z0 :

Left Wide --> Lw
Right Wide --> Rw
Left Top Front --> Ltf
Right Top Front --> Rtf
Top Side Left --> TpSiL
Top Side Right --> TpSiR
Left Top Back --> Ltb
Right Top Back --> Rtb

Layout: L, R, C, LFE, Lss, Rss, Lrs, Rrs, Lw, Rw,Ltf ,Rtf, TpSiL, TpSiR, Ltb, Rtb

---

According to the official Dolby PDF on https://www.dolby.com/siteassets/ab...er-placement/9_1_6_overhead_speaker_setup.pdf

Is it all ok on my pic (RED = Dolby; BLUE = my annotations) ?

Thanks!

 

[HomerJAU]

Is correct the association "Davinci Resolve channel names" (gray names) with "MMH Atmos Helper file names" (white names)?

Yes. The order and association is correct.

 

[GOS]

Hi Garry, believe it or not, I've never used MMH, but now that I have MKV files with music, I'm wanting to split into chapters, create flac and tag resulting flacs. The process seems super easy, and I can see all the proper tagged info in MMH. Yet, when I go to the folder on my PC and view the flacs in a stand-alone tag & rename program, those titles are blank. Not sure what I'm doing wrong...the only piece that shows up is the filename, nothing else.

 

[himey]

Hi Garry, believe it or not, I've never used MMH, but now that I have MKV files with music, I'm wanting to split into chapters, create flac and tag resulting flacs. The process seems super easy, and I can see all the proper tagged info in MMH. Yet, when I go to the folder on my PC and view the flacs in a stand-alone tag & rename program, those titles are blank. Not sure what I'm doing wrong...the only piece that shows up is the filename, nothing else.

View attachment 110772

Select the files in the grid on the left, check the info in the tag box on the right, then press the tag & rename button.

 

[GOS]

Select the files in the grid on the left, check the info in the tag box on the right, then press the tag & rename button.

Of course, it would be something incredibly easy. Thanks!

 

[tormento]

Is normal that the output from ATMOS encoder gives 5.1 mediainfo, whatever channel configuration I choose?

The source w64 has the correct number of channels but the encoded output mediainfo always is something like:

General
Complete name : M:\Raw\Il ragazzo e l'airone [jpn] 5·1·2 1024kbps.eac3
Format : E-AC-3 JOC
Format/Info : Enhanced AC-3 with Joint Object Coding
Commercial name : Dolby Digital Plus with Dolby Atmos
File size : 913 MiB
Duration : 2 h 4 min
Overall bit rate mode : Constant
Overall bit rate : 1 024 kb/s

Audio
Format : E-AC-3 JOC
Format/Info : Enhanced AC-3 with Joint Object Coding
Commercial name : Dolby Digital Plus with Dolby Atmos
Duration : 2 h 4 min
Bit rate mode : Constant
Bit rate : 1 024 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 : 913 MiB (100%)
Service kind : Complete Main
Complexity index : 16
Number of dynamic objects : 15
Bed channel count : 1 channel
Bed channel configuration : LFE
Dialog Normalization : -31 dB
compr : -0.28 dB
dmixmod : Lo/Ro
ltrtcmixlev : 0.0 dB
ltrtsurmixlev : -1.5 dB
lorocmixlev : 0.0 dB
lorosurmixlev : -1.5 dB
dialnorm_Average : -31 dB
dialnorm_Minimum : -31 dB
dialnorm_Maximum : -31 dB

 

[himey]

Is normal that the output from ATMOS encoder gives 5.1 mediainfo, whatever channel configuration I choose?

The source w64 has the correct number of channels but the encoded output mediainfo always is something like:

General
Complete name : M:\Raw\Il ragazzo e l'airone [jpn] 5·1·2 1024kbps.eac3
Format : E-AC-3 JOC
Format/Info : Enhanced AC-3 with Joint Object Coding
Commercial name : Dolby Digital Plus with Dolby Atmos
File size : 913 MiB
Duration : 2 h 4 min
Overall bit rate mode : Constant
Overall bit rate : 1 024 kb/s

Audio
Format : E-AC-3 JOC
Format/Info : Enhanced AC-3 with Joint Object Coding
Commercial name : Dolby Digital Plus with Dolby Atmos
Duration : 2 h 4 min
Bit rate mode : Constant
Bit rate : 1 024 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 : 913 MiB (100%)
Service kind : Complete Main
Complexity index : 16
Number of dynamic objects : 15
Bed channel count : 1 channel
Bed channel configuration : LFE
Dialog Normalization : -31 dB
compr : -0.28 dB
dmixmod : Lo/Ro
ltrtcmixlev : 0.0 dB
ltrtsurmixlev : -1.5 dB
lorocmixlev : 0.0 dB
lorosurmixlev : -1.5 dB
dialnorm_Average : -31 dB
dialnorm_Minimum : -31 dB
dialnorm_Maximum : -31 dB

That makes sense for lossy Atmos. Lossless will be 7.1.

 

[HomerJAU]

Is normal that the output from ATMOS encoder gives 5.1 mediainfo, whatever channel configuration I choose?

Yes. EAC-3 JOC Atmos is encoded into 6 channels. MediaInfo reports the 6 channel layout but also it reports JOC and number of objects. The encoder is working correctly.

TrueHD Atmos is encoded into 8 channels.

 

[tormento]

Yes. EAC-3 JOC Atmos is encoded into 6 channels. MediaInfo reports the 6 channel layout but also it reports JOC and number of objects. The encoder is working correctly.

TrueHD Atmos is encoded into 8 channels.

My bad, sorry.

I had that doubt but why does the DDP BD profile and the DDP Online one encode the very same file with 2 different "channels configuration"? Is it just needed for AC-3 compatibility or there are other reasons?

From W64 5.1.2:

BD profile

Format : E-AC-3 JOC
Format/Info : Enhanced AC-3 with Joint Object Coding
Commercial name : Dolby Digital Plus with Dolby Atmos
Format profile : Blu-ray Disc
Duration : 2 h 3 min
Bit rate mode : Constant
Bit rate : 1 152 kb/s
Channel(s) : 8 channels
Channel layout : L R C LFE Ls Rs Tfl Tfr

Online profile

Format : E-AC-3 JOC
Format/Info : Enhanced AC-3 with Joint Object Coding
Commercial name : Dolby Digital Plus with Dolby Atmos
Duration : 2 h 3 min
Bit rate mode : Constant
Bit rate : 1 024 kb/s
Channel(s) : 6 channels
Channel layout : L R C LFE Ls Rs

Beside the tiny difference with bitrate, are there quality differences between the two profiles?

 

[HomerJAU]

Beside the tiny difference with bitrate, are there quality differences between the two profiles?

Looks like the higher bitrate triggers an 8 channel JOC.