Atmos

[adamthecashew]

Oh they always like to take forever.

[cosmoxl]

got 3.9.1 installed and it does seem that Atmos is broken in tvOS 13. it wasn't just the fault of MrMC.

[Everbrave]

got 3.9.1 installed and it does seem that Atmos is broken in tvOS 13. it wasn't just the fault of MrMC.

I’m currently away from my ATV installation, but if atmos doesn’t work on MrMC, then it wasn’t just a build mistake but probably some code modifications are needed. Plex client can Payback/passthrough EAC3 atmos using the native AVPlayer in tvOS 13 Beta.

[cosmoxl]

got 3.9.1 installed and it does seem that Atmos is broken in tvOS 13. it wasn't just the fault of MrMC.

I’m currently away from my ATV installation, but if atmos doesn’t work on MrMC, then it wasn’t just a build mistake but probably some code modifications are needed. Plex client can Payback/passthrough EAC3 atmos using the native AVPlayer in tvOS 13 Beta.

The Plex app *not* using the enhanced video player can play atmos in some files, mainly the test files specifically to show off atmos. But it does not play atmos from actual movies with eac3 atmos track. I'm guessing there's something different about those audio tracks.

MrMC isn't playing atmos for anything at the moment.

[priitv8]

The Plex app *not* using the enhanced video player can play atmos in some files, mainly the test files specifically to show off atmos. But it does not play atmos from actual movies with eac3 atmos track. I'm guessing there's something different about those audio tracks.

Have you tried to put these files through Subler (v 1.5 or later)?
The MP4 ec3 track’s Magic Cookie needs to follow spec and carry additional 2 new bytes in order for tvOS to recognise atmos.
Works for me every time. Just majority of atmos tracks are not encoded in eac3.

[cosmoxl]

The Plex app *not* using the enhanced video player can play atmos in some files, mainly the test files specifically to show off atmos. But it does not play atmos from actual movies with eac3 atmos track. I'm guessing there's something different about those audio tracks.

Have you tried to put these files through Subler (v 1.5 or later)?
The MP4 ec3 track’s Magic Cookie needs to follow spec and carry additional 2 new bytes in order for tvOS to recognise atmos.
Works for me every time. Just majority of atmos tracks are not encoded in eac3.

I'm not going to bother with editing the files. I'll wait for MrMC devs to get things fixed for tvOS 13. For now I've still got a shield or a roku that will play atmos from eac3.

[priitv8]

I'm not going to bother with editing the files. I'll wait for MrMC devs to get things fixed for tvOS 13. For now I've still got a shield or a roku that will play atmos from eac3.

You don't need to edit them. Subler just fixes the MP4 atoms for you when saving.
But in case of the MP4 container (the only one tvOS native player knows to play), it makes a lot of sense to have fully spec compliant files, I think. The Dolby-created demo files are. Most things converted from MKV are not.
This whole discussions does not apply to MKV in any way anyway.

[tomsmith]

I'm not going to bother with editing the files. I'll wait for MrMC devs to get things fixed for tvOS 13. For now I've still got a shield or a roku that will play atmos from eac3.

You don't need to edit them. Subler just fixes the MP4 atoms for you when saving.
But in case of the MP4 container (the only one tvOS native player knows to play), it makes a lot of sense to have fully spec compliant files, I think. The Dolby-created demo files are. Most things converted from MKV are not.
This whole discussions does not apply to MKV in any way anyway.

Can you explain how to do this? Also is there a PC program that will do the same thing? Maybe handbrake?

[priitv8]

Can you explain how to do this? Also is there a PC program that will do the same thing? Maybe handbrake?

You open a movie in Subler and save it again. Or save as a copy.
Just observe that Subler recognises the track as Atmos track.

Screenshot 2019-08-26 at 08.23.05.png

Similar tool for windows is not known to me. Last time I checked, Handbrake did not pass EAC3 track through for MP4 output.

[Everbrave]

Atmos is still broken in beta 8. The demo files don’t playback at all.