Music Media Helper (Tools for Multichannel Audio & Music Videos)

[HomerJAU]

The edge of the world (well, the southern coast of Australia - around 100km or so of cliff to the Indian Ocean):

 

[HomerJAU]

Sunset at our beach camp on Dirk Hartog Island off Western Australia. No post processing of the photo.

 

[HomerJAU]

Turtle Beach on Dirk Hartog Island at western end. We saw several whales off the cliffs and beaches here. Sharks and dolphins everywhere too.

 

[marpow]

Seriously, I have to visit you. My good friend.

 

[DuncanS]

Sunset at our beach camp on Dirk Hartog Island off Western Australia. No post processing of the photo.

View attachment 94326

You've travelled a long way! Its very easy to forget how big Australia is when you live on a tiny island like Britain!

 

[HomerJAU]

You've travelled a long way!

6,800km since leaving home and we’ve not reached our most northerly destination yet. From there (Exmouth) we head inland to Karijini National Park then back to Perth then 5 or 6 days back home to Melbourne.

 

[LennonCobain]

Question about the Convert M4A Files feature in MMH. Is there a reason why this prompt for output channel layout only appears for MPEG-H 3D encoded M4A files and not E-AC3-JOC encoded M4A files?

 

[himey]

Question about the Convert M4A Files feature in MMH. Is there a reason why this prompt for output channel layout only appears for MPEG-H 3D encoded M4A files and not E-AC3-JOC encoded M4A files?
View attachment 94725

You mean Atmos encoded files?
If so, you need the Dolby Reference Player to decode the files.

 

[LennonCobain]

You mean Atmos encoded files?
If so, you need the Dolby Reference Player to decode the files.

Yes, I am referring to Atmos encoded files. I do have DRP installed. I think my inquiry didn't account for the fact that DRP must be utilized to generate a file that contains more than 6 channels.

 

[himey]

Yes, I am referring to Atmos encoded files. I do have DRP installed. I think my inquiry didn't account for the fact that DRP must be utilized to generate a file that contains more than 6 channels.

Unless I am mistaken, you are in the wrong section of the MMH app. Go into the "MMH Atmos Helper" section.

 

[LennonCobain]

Unless I am mistaken, you are in the wrong section of the MMH app. Go into the "MMH Atmos Helper" section.

I’m familiar the MMH Atmos Helper section and use it when I want to decode to interleaved WAV or mono WAV. My inquiry was about the ability to decode beyond 6 channel without needing to use MMH Atmos Helper. Thanks for your help.

 

[HomerJAU]

Atmos decoding requires DRP. No known other way yet discovered.

MMH will decode MPEG-H 3D to wav (or FLAC if 8 or less objects). If you decode 4 object (quad) use the Quad output option which fixes a decoder issue where fronts and rears are mixed together (small amount of fronts get mixed into rears, less discrete than the original quad mix).

EDIT; Amazingly I can get 4G here on the beach in Ningaloo:

On the horizon are waves breaking on the reef. Huge yesterday when wind was very strong.

 

[HomerJAU]

Ningaloo village beach:

Termite nests (thousands) on the drive from highway to coast, many around 6ft high:

 

[spearse]

MMH is a godsend for us surround-philes!
Question (or feature request): I have extracted many Atmos recordings into .mka format and deleted original .mkv's. I now find the format I need is .m4a (Kodi for example prefers .m4a). I tried using a shell batch script using ffmpeg to convert .mka to .m4a but ffmpeg chokes:

ffmpeg.exe" -i "2.mka" -c copy -strict -2 "1.m4a"

[ipod @ 00000211366afb40] Could not find tag for codec truehd in stream #1, codec not currently supported in container
[out#0/ipod @ 000002113668ad80] Could not write header (incorrect codec parameters ?): Invalid argument
Invalid argument

Can MMH convert formats? From .mka to .m4a? Or is there a correct way to use ffmpeg to convert these format?
Thanks!
Starmanj

 

[HomerJAU]

Ffmpeg can do it. I’ll jump on my PC shortly and post the command line. (I’m on my iPad now)

 

[HomerJAU]

ffmpeg.exe" -i "2.mka" -c copy -strict -2 "1.m4a"

You need to create a .mp4 file then rename to .m4a (its a 'bug' in ffmpeg)

MMH uses this command line which also removes any chapters:

-i "input.mka" -c:a copy -strict -2 -map_chapters -1 "Out.mp4"

Then it renames "Out.mp4" to "Out.m4a"


MMH's 'Extract Audio from MKV" tool converts all selected mka files with Atmos streams to .m4a with Atmos streams (it copies the streams from one container to the other, no 'conversion')

 

[spearse]

You need to create a .mp4 file then rename to .m4a (its a 'bug' in ffmpeg)

MMH uses this command line which also removes any chapters:

-i "input.mka" -c:a copy -strict -2 -map_chapters -1 "Out.mp4"

Then it renames "Out.mp4" to "Out.m4a"


MMH's 'Extract Audio from MKV" tool converts all selected mka files with Atmos streams to .m4a with Atmos streams (it copies the streams from one container to the other, no 'conversion')

Perfect! Thank you for all your help!

 

[marpow]

I ripped the Trevor Rabin Rio Blu Ray.
There are 10 chapters that I converted 2.0 and 5.1 from MKV to FLAC, easy, no problem.

There are 3 bonus tracks, that I ripped successfully from the Blu Ray as MKV.
They ripped as 3 individual MKV tracks and I believe they are stereo.

How do I change a single MKV file to a single FLAC file? Tagging included.

 

[HomerJAU]

Why do you want a single FLAC file?

You won’t be able to tag all the tracks/songs but I believe you can embed a CUE file in a single FLAC file. You will need to look up the FLAC command line to add the CUE here:

https://xiph.org/flac/documentation_tools_flac.html

 

[timbre4]

Extract FLACs from MKV - This has worked really for me until I got to XTC - The Big Express this past week. Had a devil of a time confirming which was 5.1 stream from all the others. I did identify Atmos, Stereo, Instrumental, Demos/Extras (16/48) as I went through all of them twice. This is what I found in t03.

Both streams in this MKV t03 are labelled DTS Lossy; the first set (highlighted) has files that are each maybe >50% larger than the lossy set in the 2nd stream listed. Could this be a misinterpretation on my part or that of MMH? I cannot account for 5.1 files otherwise. Thanks for everything you do.