Dolby TrueHD 96kHz issues

[MateyTate 16]

Hi there, 

I've recently decided to rip all my Blu-ray audio discs to put on my Synology NAS. I use an Nvidia Shield to play the audio, and the DTS-HD tracks play fine, but I'm having stuttering on some, and I really cannot understand why. All were simply ripped with MakeMKV, and dumped as .MKV files, nothing else was touched. Certain files with TrueHD play just fine, others skip and stutter, but at the same points. The files themselves are fine if I play them with VLC. 

Would a log help with this, or does anyone know why it would be doing it? I'm not 100%, but most I've tested seem that if they are TrueHD + Atmos, they work OK. If they are just the TrueHD files then they have issues? Its strange, clearly Emby/Shield can play TrueHD.

Any ideas?

Edited March 22, 2023 by GrimReaper
Modified Title

[MateyTate 16]

I just checked my theory and played all 12 of my rips, and yes. The 5 that are just TrueHD stutter and skip after a few seconds. The TrueHD+Atmos files all play perfectly.

Strange.

[ebr 16169]

Can you please play that item for a few seconds and then follow the instructions to send a log from the app?

 

[darrenkdean 31]

Following.  Noticing a similar issue.  4k HEVC HDR10 with Dolby Atmos, EAC3 5.1, is stuttering while Direct Playing on local network.  It's not a local issue as everything is running 10G fiber & ubiquiti wifi with strong connections & plenty of bandwidth.  Non - EAC3 content plays smoothly.  Even when I force it to transcode at half the Direct Play speed, it's still has pausing issues.

[MateyTate 16]

5 hours ago, ebr said:

Can you please play that item for a few seconds and then follow the instructions to send a log from the app?

 

Just sent them :)

[darrenkdean 31]

1 hour ago, darrenkdean said:

Following.  Noticing a similar issue.  4k HEVC HDR10 with Dolby Atmos, EAC3 5.1, is stuttering while Direct Playing on local network.  It's not a local issue as everything is running 10G fiber & ubiquiti wifi with strong connections & plenty of bandwidth.  Non - EAC3 content plays smoothly.  Even when I force it to transcode at half the Direct Play speed, it's still has pausing issues.

Follow up.  In our setups we are using Firestick HD 4K's into a 4K TV, with optical audio running to soundbars.  The soundbars are older & support Dolby DTS-HD but not Atmos.  In the Fire Stick 4K settings, I disabled DTS-HD audio & the issue is resolved...no more stuttering.  Fire Stick 4K does not allow me to differentiate DTS-HD vs Atmos.  DTS is pass thru is enabled, but had to disable DTS-HD.  Interesting that Atmos played audio, but caused stuttering.

I've had reports that EAC3 audio is causing Samsung TV to boot the user out of native Emby app, any time they try to play content with EAC3 audio.  Will search to see if there is an audio setting there that can be disabled to resolve this as well.

Best-

Edited October 5, 2022 by darrenkdean

[ebr 16169]

5 hours ago, darrenkdean said:

with optical audio running to soundbars.  The soundbars are older & support Dolby DTS-HD but not Atmos

Hi.  I don't believe DTS-HD will be supported over an optical connection.  Also, Atmos is Dolby and is never with DTS...

[MateyTate 16]

Hi @ebr, I know it's a little confusing as darrenkdean posted his issue here too, and while I agree his problem is pretty clear (i.e. DTS-HD over optical is impossible), mine should be working. I did send logs the other day, and just to recap... I'm Direct Playing .MKV files on my Shield, through my Denon AV Receiver. My specific issue if I play a file that is TrueHD + Atmos, the video files plays fine. If I play a file that is basic TrueHD it stutters. This is the same on all of them.  

It's not the end of the world, as they all also have a DTS-HD Master Audio track too, it's just bugging me as I do prefer Dolby.

Edited October 8, 2022 by MateyTate

[ebr 16169]

7 hours ago, MateyTate said:

TrueHD + Atmos, the video files plays fine. If I play a file that is basic TrueHD it stutters

What are the audio bitrates on the two?

[rbjtech 5284]

What setting do you have on the Shield for Audio ?  Disable any Dolby processing as you want it all to be passed RAW to your AVR that can handle all the formats.

I have a Shield Pro 2019 and Denon AVR and have zero issues with any sound format - they all play perfectly ok.

[MateyTate 16]

So, I have just noticed that all the TrueHD files that stutter have a sample rate of 96kHz, and the ones that play fine are at 48kHz. The bitrates are all similar, about 20Mbps.

[MateyTate 16]

After realising it’s 96kHz, I searched and it seems I’m not alone:

 

[rbjtech 5284]

Do you have any example titles that use 96KHz ?

edit - ah-ha !

My Fair Lady uses 96Khz and that 'clips' on my system as well - it only happens on the opening music, so I thought it was just a bad encode - it's been a while since I watched it..)  but this is likely the same issue.

I guess Exo - has an issue with 96KHz sampling.

Edited October 13, 2022 by rbjtech

[MateyTate 16]

Is there anyway to submit feedback regarding Exoplayer. Loads of people seem to be having issues with TrueHD 96kHz files, so there’s clearly an issue - mine are all hi-res Blu-ray Audio rips. VLC plays them fine on the same hardware (Nvidia Shield). 

[rbjtech 5284]

11 hours ago, MateyTate said:

Is there anyway to submit feedback regarding Exoplayer. Loads of people seem to be having issues with TrueHD 96kHz files, so there’s clearly an issue - mine are all hi-res Blu-ray Audio rips. VLC plays them fine on the same hardware (Nvidia Shield). 

Maybe worth re-titling this thread - adding the 96KHz bit - as normal 48Khz THD files are not a problem ?

@GrimReaper

 

[GrimReaper 4739]

17 minutes ago, rbjtech said:

Maybe worth re-titling this thread - adding the 96KHz bit - as normal 48Khz THD files are not a problem ?

@GrimReaper

 

*Done*

[MateyTate 16]

Just in case anyone still has this problem, for  me it was related to my AVR. I had a Denon X3400H, but this week upgraded to an X3800H and this problem has gone away, all the files play perfectly well now. 

[rbjtech 5284]

8 hours ago, MateyTate said:

Just in case anyone still has this problem, for  me it was related to my AVR. I had a Denon X3400H, but this week upgraded to an X3800H and this problem has gone away, all the files play perfectly well now. 

Hmm - interesting.  Is there any difference in the AVR specifications wrt 96KHz THD ?   Seems odd as both AVR's suggest they are capable.   Did you use a different HDMI input/output or maybe a different cable ?

[rexerm 36]

Just to chime in: I'm also having this same issue with a 96 KHz DTS-HD MA track.  Specifically, the 4.0 track from Synapse's Suspiria release.  Both the 4K and 1080p versions stutter when playing from my Shield.  If I do a Playback Correction, Emby transcodes it to a 96 KHz PCM track... but reverses the front and rear channels, so the dialogue starts coming from the rear speakers.

[ebr 16169]

Hi.  Can you please test this with the latest  beta release of the app?

Thanks.

 

 

[rbjtech 5284]

15 hours ago, ebr said:

Hi.  Can you please test this with the latest  beta release of the app?

Thanks.

 

 

Hi Eric - Mine is still breaking up with 96KHz THD Audio - it sounds like its 'clipping' as it doesn't happen with dialogue type audio.

I've sent a debug log from the AndroidTV App (93g) - 09:20 ish GMT User= Rich

Playing My Fair Lady - 96Khz THD Audio Track

Thanks.

edit - I've sent a 15 second sample of the file in question via PM. 

Edited September 8, 2023 by rbjtech

[Luke 42077]

For video stuttering, please try Emby for Android 3.5.25 and let us know how that compares:

https://emby.media/emby-for-android.html

Thanks.