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Android Fire TV Cube 3 & HD Audio Passthrough w/24p Support (Workaround Builds)
7.6.5.2 fixed all the EDID issues with Samsung soundbar, and potentially compatibility issues with other devices too.
Dolby MAT capability is now being properly detected, as well as no more problem with EAC3 being out of sync, stuttering..., I don't need to plug in a EDID editor anymore 😅
But the Cube still pass the AC3 or EAC3 (without Atmos) audio to my soundbar as Multich PCM, which suggesting some resampling or reencoding, but this honestly doesn't bother me since they're both lossy format anyway.
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@fritsch could you share some insight into the current bugs caused by Amazon's firmware, but also how you fixed DTS passthrough?

These bugs still exist in apps that are using exoplayer and/or libvlc, so sharing your findings will no doubt help developers also implement fixes to these.

I assume Kodi is using it's own custom media playback software, separate from exoplayer/libvlc?
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First: The bug only happened in IEC format.
Second: I saw in ADB logcat, that the sink gets "silently" reopened, but all the buffers put upto this time would basically get "ignored", with the result that AudioTrack would be exactly the time out of sync, until the transparent reopen happened under the hood.

As I cannot fix the firmware behaviour, which should be: "return -1" on AudioTrack Write or something, so that application can properly reopen - I tracked that state, means: When I asked Audiotrack to run with 200 ms buffer, but I added 400 ms data WITHOUT the sink telling me that it consumed a single thing I know that this state happened. Then I return MAX_INT and Audio-Engine reopens the sink. With a bit of luck after ~ 2 reopens the sink is back in shape.

Code-Workaround: https://github.com/xbmc/xbmc/commit/be04...f8aa1ba7d2
First decide what functions / features you expect from a system. Then decide for the hardware. Don't waste your money on crap.
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@fritsch
For fire cube "2nd" gen, IEC packer has not been working for more than 1 year. Is it because of the fire tv os firmware bug? Is there any workaround to use IEC packer?
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Broken firmware ... nothing I can do ...
First decide what functions / features you expect from a system. Then decide for the hardware. Don't waste your money on crap.
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Hi all together,

I just read the last few pages of the thread and i am not shure what is the conclusion of the statements.

Can the Cube pass through audio signals with the lastest firmeware? (like the shield or are there audio differences).
I assume "yes" but you have the fear that every update could change it?

The cube is currently cheaper because its "black friday week" and i am thinking to change from "nvidia shield TV" to the cube. A good idea?
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yes, the cube 3 is since a few firmwares capable to pass through everything - just like the shield.
And i guess it also won't change, as at least half of it (TrueHD passthrough) is a promised feature. While DTS-HD for more than the Core is no. 

On very latest firmware it only has a tiny display bug wenn passing through dd+ on very few devices - it shows instead of dd+ multichannel pcm. But it still works as expected.

Oh and you likely need an USB gigabit network adapter for a few bucks to be able to play higher bitrate local content. As internal port only has 100 mbit/s and Wifi - even though it is fast on speedtest - is also usually not consistently fast enough
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Using a recent nightly and after some update(s) to the Cube3 DTS MA 5.1 is now silent, 7.1 is working as it was.

Anyone else ?
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On Aug. 11, 2018 - a post https://forum.kodi.tv/showthread.php?tid...pid2758191 mentioned the Fire TV 4K Stick only outputted BT.2020 - even of BT.709 or ITU-T 601 content. Does anyone know if this is still the case with the 3rd-gen Fire TV Cube?
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(2023-12-10, 07:39)selfcontained Wrote: Does anyone know if this is still the case with the 3rd-gen Fire TV Cube?

no that is not the case with cube gen 3

you can force 2020 or 709, with adaptive it will auto switch

see https://www.aftvnews.com/3rd-gen-fire-tv...ck-4k-max/

(yes the article references tv stick 4k max but the setting is also on my cube gen 3, and works as intended)
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Thank you! Do you know if it was fixed on the Fire TV 4K Stick? Or just the Max and Cube?
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(2023-12-10, 07:52)selfcontained Wrote: Thank you! Do you know if it was fixed on the Fire TV 4K Stick? Or just the Max and Cube?
no idea whatsoever, never owned a stick
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Hello!

I just got Fire cube 3rd gen few days ago, and I'm relatively new Kodi user. I've tried reading as much threads as I could, but I'm not sure what is the correct answer - which version of Kodi should I install for proper Dolby Atmos play. Right now I have Kodi Nexus nightly (20.12.2023), but I have some issues - from time to time audio is not in sync with video. Secondly, when playing DD+ Atmos, it gets detected as DSUR (I guess that's multichannel PCM), but if I switch audio modes on AVR receiver, it gets switched to DD+ Atmos, and DSUR is not available anymore (so I guess it didn't exist as such). And third, when playing DD+ content, volume is really low - videos that only have stereo, or multichannel PCM have much higher volume. I even tried to adjust it on the receiver (only for that HDMI) but even with +8db it is still low. I have cube connected with HDMI 2.1 cable to Denon AVR. In cube audio options Best available is set, dialog enhancer and volume leveler are both off. In Kodi, I have passthrough enabled, and all other passthrough options, except transcoding.
So, the actual question is, which version of Kodi do I need? Do I need 21, or this should also work with 20 nightly? Or do I need some of specific builds I found here, and if I do, which one is best?

Best regards,
Davor
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@davorf Hey, since you have a Denon AVR and you seem to be getting low volume when playing Dolby content, perhaps you should double check this setting and make sure it’s OFF as indicated by the youtuber. People that have this setting ON on their Denon AVRs might be getting the lower volume sound on Dolby Atmos tracks. Hence, I don’t have a Denon AVR myself or a home theater, I do have a high end Soundbar. However, I do follow a lot of home theater stuff since I plan to build one in the near future.

I’m not sure if this will fix your issue or if you have or not have this feature OFF already. Just reading about your comment and having a Denon AVR automatically reminded be about this video.

Here’s the YouTube link; https://youtu.be/TDTZnuaFero

To any mods, etc. I hope there’s not issues with me providing a link to a quick short setting guide video targeted to Denon AVRs with regards to unlocking full volume on all Dolby Atmos content playback.
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(2023-12-23, 13:38)davorf Wrote: Kodi Nexus nightly (20.12.2023)

compare to a prerelease v21 omega beta or nightly, this year Omega has had a lot of fixes for firetv which were not backported to Nexus - https://kodi.tv/download/android
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Fire TV Cube 3 & HD Audio Passthrough w/24p Support (Workaround Builds)0