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Product Support => HiMedia Q5/Q10 4K3D => Topic started by: airsoft on October 13, 2015, 05:46:40 PM

Title: Decoding audio Dolby TrueHD
Post by: airsoft on October 13, 2015, 05:46:40 PM
Hi,

is there a problem to decode Dolby TrueHD in MKV container?
1) Need_For_Speed.mkv (DTS Master Audio, English, 7.1 channels, 24 bits, 48kHz) - it works -> LINEAR PCM [2/0]
2) Mission_Impossible_-_Ghost_Protocol.mkv (TrueHD, English, 7.1 channels, 48kHz) - it doesn't work - no audio
3) Catwoman.m2ts (TrueHD/AC3, English, 5.1 channels, 48kHz, dialnorm: -27dB) - it works -> LINEAR PCM [2/0]
4) John_Wick.m2ts (TrueHD/AC3 (Atmos), English, 7.1 channels, 48kHz) - it works -> LINEAR PCM [2/0]

As far as I know it is not possible to acheive 3/2.1 (6 channels) or 3/4.1 (8 channels) PCM, but what about at least a stereo?
It's a little mess in the settings about audio bitstream/decoding, but this is another discussion.

Regards
Title: Re: Decoding audio Dolby TrueHD
Post by: codrynn on October 13, 2015, 10:37:55 PM
hello...in menu of recevier you must select out audio AMP....be careful  NOT AMP+TV
in meniu of Himedia hdmi raw 7.1
Title: Re: Decoding audio Dolby TrueHD
Post by: airsoft on October 14, 2015, 06:20:42 AM
hello...in menu of recevier you must select out audio AMP....be careful  NOT AMP+TV
in meniu of Himedia hdmi raw 7.1

I use always audio out = AMP, I known that if I choose AMP+TV both AMP and TV should maintain the required scheme.
And the option RAW7.1 bitstream HD Audio (i.e. Dolby TrueHD, DTS-HD Master Audio, while the option RAW5.1 bitstream standard audio (DTS 5.1, Dolby Digital 5.1).
I can't understand what is the relation of your advice? :)

Regards
Title: Re: Decoding audio Dolby TrueHD
Post by: futeko.com on October 14, 2015, 10:32:25 AM
Hi,

is there a problem to decode Dolby TrueHD in MKV container?
1) Need_For_Speed.mkv (DTS Master Audio, English, 7.1 channels, 24 bits, 48kHz) - it works -> LINEAR PCM [2/0]
2) Mission_Impossible_-_Ghost_Protocol.mkv (TrueHD, English, 7.1 channels, 48kHz) - it doesn't work - no audio
3) Catwoman.m2ts (TrueHD/AC3, English, 5.1 channels, 48kHz, dialnorm: -27dB) - it works -> LINEAR PCM [2/0]
4) John_Wick.m2ts (TrueHD/AC3 (Atmos), English, 7.1 channels, 48kHz) - it works -> LINEAR PCM [2/0]

As far as I know it is not possible to acheive 3/2.1 (6 channels) or 3/4.1 (8 channels) PCM, but what about at least a stereo?
It's a little mess in the settings about audio bitstream/decoding, but this is another discussion.

Regards

I also find that True-HD will not decode to PCM stereo. I'll reply again tomorrow with a response from Himedia.
Title: Re: Decoding audio Dolby TrueHD
Post by: airsoft on October 14, 2015, 10:46:30 AM
Just for the record:
multichannel PCM is it not possible i.e. HiSillicon doesn't support it
or
it is a firmware restriction i.e. Himedia are decided ?

Regards
Title: Re: Decoding audio Dolby TrueHD
Post by: futeko.com on October 15, 2015, 10:50:10 AM
Himedia are looking into the True-HD not decoding to 2 channel PCM problem.

I think it's surprised them that it doesn't work, maybe people haven't reported it before because a lot of rips will have both True-HD and AC3 audio tracks (in which case the AC3 would be decoded so no problem) and people with 7.1 audio rips are likely to want it passed as 7.1, not 2 channel PCM. I expect Himedia will fix it.



Title: Re: Decoding audio Dolby TrueHD
Post by: airsoft on October 15, 2015, 11:26:38 AM
Hi,

I also remember it works on 1.0.8, but

1) what should be the settings for PCM output because I always see PCM 2/0 (stereo) on my receiver?

2) for the record - my previous player (Dune HD) was able to decode Dolby TrueHD only in m2ts container,
when it was MKV it only can bitstream it and after a lot of tests I've noticed that if movie is Bluray ISO
it also works in decode mode (somewhere in internet I've read that is license problem, not a hardware)
so I decided to test also on my Q5

Regards
Title: Re: Decoding audio Dolby TrueHD
Post by: futeko.com on October 15, 2015, 11:42:32 AM
Himedia say that decode to 2 channel PCM is not supported for True-HD audio tracks. It is supported when there is also an AC3 track present. This is on a hardware level so is unlikely to be fixed/changed. I don't think 1.0.8 would be any different to other firmwares in this respect.

They also say that multi-channel LPCM is supported, but I'm not sure. I will test later and would appreciate any testing anyone reading this would like to do. Settings would be HDMI Output 'LPCM'. Whether or not the setting for HBR Ouput matters or not before it's greyed needs testing.
Title: Re: Decoding audio Dolby TrueHD
Post by: airsoft on October 15, 2015, 11:52:05 AM
Himedia say that decode to 2 channel PCM is not supported for True-HD audio tracks. It is supported when there is also an AC3 track present. This is on a hardware level so is unlikely to be fixed/changed. I don't think 1.0.8 would be any different to other firmwares in this respect.

They also say that multi-channel LPCM is supported, but I'm not sure. I will test later and would appreciate any testing anyone reading this would like to do. Settings would be HDMI Output 'LPCM'. Whether or not the setting for HBR Ouput matters or not before it's greyed needs testing.

:) I was expecting multichannel PCM, not only 2 channels. Of course the ability of decoding multichannel or stereo PCM is welcomed.
Title: Re: Decoding audio Dolby TrueHD
Post by: airsoft on October 16, 2015, 01:09:56 PM
My test results

HDMI
HBR
Dolby TrueHD 7.1 - m2ts
Dolby TrueHD 7.1 - mkv
DTS-HD MA 7.1 - mkv
PCM 5.1 - mkv
PCM 7.1 - m2ts
Output
Output
codec (channels)
codec (channels)
codec (channels)
codec (channels)
codec (channels)
LPCM
Auto
PCM (2/0)
no audio
PCM (2/0)
PCM (2/0)
PCM (2/0)
LPCM
RAW5.1
Dolby Digital (3/2.1)
no audio
DTS (3/2.1)
PCM (2/0)
PCM (2/0)
LPCM
RAW7.1
Dolby TrueHD (3/4.1)
Dolby TrueHD (3/4.1)
DTS-HD MA (5/2.1)
PCM (3/2.1)
PCM (3/4.1)
RAW
Auto
Dolby TrueHD (3/4.1)
Dolby TrueHD (3/4.1)
DTS-HD MA (5/2.1)
not tested
not tested
RAW
RAW5.1
Dolby Digital (3/2.1)
no audio
DTS (3/2.1)
not tested
not tested
RAW
RAW7.1
Dolby TrueHD (3/4.1)
Dolby TrueHD (3/4.1)
DTS-HD MA (5/2.1)
not tested
not tested
Close
Auto
no audio
no audio
no audio
not tested
not tested
Close
RAW5.1
no audio
no audio
no audio
not tested
not tested
Close
RAW7.1
no audio
no audio
no audio
not tested
not tested
Auto
Auto
Dolby TrueHD (3/4.1)
Dolby TrueHD (3/4.1)
DTS-HD MA (5/2.1)
not tested
not tested
Auto
RAW5.1
Dolby Digital (3/2.1)
no audio
DTS (3/2.1)
not tested
not tested
Auto
RAW7.1
Dolby TrueHD (3/4.1)
Dolby TrueHD (3/4.1)
DTS-HD MA (5/2.1)
not tested
not tested

It took me hour and half to test

P.S. I've tested 5 minutes ago and seems
1) or I've mistaken in previous tests
2) or software is fixed and PCM 5.1 in MKV works when HBR=RAW7.1 and HDMI=LPCM
Title: Re: Decoding audio Dolby TrueHD
Post by: airsoft on October 17, 2015, 06:35:04 PM
Hi all,

I've returned to 1.0.8 and tested - same result container = MKV, audio = Dolby TrueHD, result = PCM decoding => no audio
i.e. same result as 3.0.1, so we wait Himedia answer and maybe fixed problem in next version.
Title: Re: Decoding audio Dolby TrueHD
Post by: futeko.com on October 19, 2015, 09:19:43 AM
Thanks for the very comprehensive testing. Your results have been passed to Himedia.
Title: Re: Decoding audio Dolby TrueHD
Post by: looun on October 19, 2015, 02:10:13 PM
My test results

HDMI
HBR
Dolby TrueHD 7.1 - m2ts
Dolby TrueHD 7.1 - mkv
DTS-HD MA 7.1 - mkv
PCM 5.1 - mkv
PCM 7.1 - m2ts
Output
Output
codec (channels)
codec (channels)
codec (channels)
codec (channels)
codec (channels)
LPCM
Auto
PCM (2/0)
no audio
PCM (2/0)
PCM (2/0)
PCM (2/0)
LPCM
RAW5.1
Dolby Digital (3/2.1)
no audio
DTS (3/2.1)
PCM (2/0)
PCM (2/0)
LPCM
RAW7.1
Dolby TrueHD (3/4.1)
Dolby TrueHD (3/4.1)
DTS-HD MA (5/2.1)
PCM (2/0)
PCM (3/4.1)
RAW
Auto
Dolby TrueHD (3/4.1)
Dolby TrueHD (3/4.1)
DTS-HD MA (5/2.1)
not tested
not tested
RAW
RAW5.1
Dolby Digital (3/2.1)
no audio
DTS (3/2.1)
not tested
not tested
RAW
RAW7.1
Dolby TrueHD (3/4.1)
Dolby TrueHD (3/4.1)
DTS-HD MA (5/2.1)
not tested
not tested
Close
Auto
no audio
no audio
no audio
not tested
not tested
Close
RAW5.1
no audio
no audio
no audio
not tested
not tested
Close
RAW7.1
no audio
no audio
no audio
not tested
not tested
Auto
Auto
Dolby TrueHD (3/4.1)
Dolby TrueHD (3/4.1)
DTS-HD MA (5/2.1)
not tested
not tested
Auto
RAW5.1
Dolby Digital (3/2.1)
no audio
DTS (3/2.1)
not tested
not tested
Auto
RAW7.1
Dolby TrueHD (3/4.1)
Dolby TrueHD (3/4.1)
DTS-HD MA (5/2.1)
not tested
not tested

It took me hour and half to test

what do you mean with DTS-HD MA (5/2.1) and Dolby TrueHD (3/4.1)?

with RAW and RAW7.1 i never have problem, A/V reciver show 7.1 DTS-HD MA/Dolby TrueHD.

which file do you have tested? this?
http://www.demo-world.eu/download-2d-trailers/? file=dolby_truehd_channel_check_lossless-DWEU.mkv
http://www.demo-world.eu/download-2d-trailers/?file=dts_hd_master_audio_sound_check_7_1_lossless-DWEU.mkv
Title: Re: Decoding audio Dolby TrueHD
Post by: airsoft on October 19, 2015, 02:40:25 PM

what do you mean with DTS-HD MA (5/2.1) and Dolby TrueHD (3/4.1)?

with RAW and RAW7.1 i never have problem, A/V reciver show 7.1 DTS-HD MA/Dolby TrueHD.

which file do you have tested? this?
http://www.demo-world.eu/download-2d-trailers/? file=dolby_truehd_channel_check_lossless-DWEU.mkv
http://www.demo-world.eu/download-2d-trailers/?file=dts_hd_master_audio_sound_check_7_1_lossless-DWEU.mkv

1) I mean with (5/2.1) and (3/4.1) the same 7.1 - the exact channel/speaker location than my receiver writes on its display
2) No. I've 3 disks each is 4 TB :) and should have enough movies to test - don't need an example to test it ;)

Try with MKV container and Dolby TrueHD and will have a problem, I know that there is no problem with DTS-HD (it has an official core even in MKV container) :)
The topic is for decoding of Dolby TrueHD.

Regards
Title: Re: Decoding audio Dolby TrueHD
Post by: bvliviu on October 25, 2015, 02:45:35 PM
Hi,i have an Logitech Z 906 speaker system , he cannot decode TrueHD...he can only DTS.What shall i do in order to hear the sound?
Title: Re: Decoding audio Dolby TrueHD
Post by: airsoft on October 25, 2015, 02:49:12 PM
What container do you use for your movies - MKV, M2TS, TS or directly Bluray ISO?

Hi,i have an Logitech Z 906 speaker system , he cannot decode TrueHD...he can only DTS.What shall i do in order to hear the sound?
Title: Re: Decoding audio Dolby TrueHD
Post by: bvliviu on October 25, 2015, 03:19:03 PM
What container do you use for your movies - MKV, M2TS, TS or directly Bluray ISO?

Hi,i have an Logitech Z 906 speaker system , he cannot decode TrueHD...he can only DTS.What shall i do in order to hear the sound?
hi airsoft,Bluray ISO..that's why I've buy the Q5 4k3D!
otherwise my Samsung TV can play MKV's
Title: Re: Decoding audio Dolby TrueHD
Post by: bvliviu on October 25, 2015, 03:40:27 PM
What container do you use for your movies - MKV, M2TS, TS or directly Bluray ISO?

Hi,i have an Logitech Z 906 speaker system , he cannot decode TrueHD...he can only DTS.What shall i do in order to hear the sound?
oooh...I just saw...that's occure also by the MKV's...for example Terminator Genisys....but these is an Atmos....I don't have so much expectations from my Logitech
perhaps futeko  have a solution
Title: Re: Decoding audio Dolby TrueHD
Post by: airsoft on October 25, 2015, 04:46:27 PM
That's why I'm asking :)
If you don't use MKV for Dolby TrueHD or Dolby Atmos you can choose PCM decoding from the options of your player and
your Logitech will receive a compatible audio.

Regards

What container do you use for your movies - MKV, M2TS, TS or directly Bluray ISO?

Hi,i have an Logitech Z 906 speaker system , he cannot decode TrueHD...he can only DTS.What shall i do in order to hear the sound?
oooh...I just saw...that's occure also by the MKV's...for example Terminator Genisys....but these is an Atmos....I don't have so much expectations from my Logitech
perhaps futeko  have a solution
Title: Re: Decoding audio Dolby TrueHD
Post by: bvliviu on October 25, 2015, 05:02:23 PM
That's why I'm asking :)
If you don't use MKV for Dolby TrueHD or Dolby Atmos you can choose PCM decoding from the options of your player and
your Logitech will receive a compatible audio.
if it were so simple ..i knew it...but don't work
my settings : HDMI=close ; SPDIF output=LPCM ; HBR output=auto; and I've tried all the combinations :-[

Regards

What container do you use for your movies - MKV, M2TS, TS or directly Bluray ISO?

Hi,i have an Logitech Z 906 speaker system , he cannot decode TrueHD...he can only DTS.What shall i do in order to hear the sound?
oooh...I just saw...that's occure also by the MKV's...for example Terminator Genisys....but these is an Atmos....I don't have so much expectations from my Logitech
perhaps futeko  have a solution
Title: Re: Decoding audio Dolby TrueHD
Post by: airsoft on October 25, 2015, 05:07:55 PM
Yes, but you didn't say : what container do you use for your movies?


That's why I'm asking :)
If you don't use MKV for Dolby TrueHD or Dolby Atmos you can choose PCM decoding from the options of your player and
your Logitech will receive a compatible audio.
if it were so simple ..i knew it...but don't work
my settings : HDMI=close ; SPDIF output=LPCM ; HBR output=auto; and I've tried all the combinations :-[

Regards

What container do you use for your movies - MKV, M2TS, TS or directly Bluray ISO?

Hi,i have an Logitech Z 906 speaker system , he cannot decode TrueHD...he can only DTS.What shall i do in order to hear the sound?
oooh...I just saw...that's occure also by the MKV's...for example Terminator Genisys....but these is an Atmos....I don't have so much expectations from my Logitech
perhaps futeko  have a solution
Title: Re: Decoding audio Dolby TrueHD
Post by: bvliviu on October 25, 2015, 05:52:17 PM
please thake a look at #16 & #17
mkv & iso
Title: Re: Decoding audio Dolby TrueHD
Post by: bvliviu on October 25, 2015, 05:59:12 PM
or...what a container does mean?
sorry i'm "green" about....
Title: Re: Decoding audio Dolby TrueHD
Post by: airsoft on October 25, 2015, 06:25:39 PM
MKV is a container
ISO is a container of M2TS files (container also).

It's just like an envelope for the video and audio :)

ISO - can be decoded because Himedia right now supports decoding Dolby TrueHD or Dolby Atmos to PCM audio t.e. compatible
with all receivers and mini audio systems (like yours)

But the problem with MKV still exists, that's why I've started this topic. Right now you can convert all of your movies
from MKV to M2TS (it's not easy) or just wait Himedia to solve it as a problem.

Regards



or...what a container does mean?
sorry i'm "green" about....
Title: Re: Decoding audio Dolby TrueHD
Post by: bvliviu on October 25, 2015, 08:36:28 PM
thank's for advise,but I'm an a outlooker(spectator) not an "movie editor"
I've buy  the Q5 to enjoy the  movies not to edit them!!!!
Title: Re: Decoding audio Dolby TrueHD
Post by: airsoft on October 25, 2015, 08:47:39 PM
Sure, you should wait for software movement from Himedia ;)
By the way it is not so difficult to do that conversion.
Another easy exit from your situation is to buy a receiver with HDMI input and it will have support all audio codecs - just offer.

Regards

thank's for advise,but I'm an a outlooker(spectator) not an "movie editor"
I've buy  the Q5 to enjoy the  movies not to edit them!!!!
Title: Re: Decoding audio Dolby TrueHD
Post by: bvliviu on October 25, 2015, 08:53:04 PM
so easy...buy it for me and will be easy
Title: Re: Decoding audio Dolby TrueHD
Post by: airsoft on October 25, 2015, 09:00:33 PM
I wrote "easy", not "cheaper".
I offer to you a free solution, you don't like it.
You can feel free and choose another solution.
I stop here.

so easy...buy it for me and will be easy
Title: Re: Decoding audio Dolby TrueHD
Post by: bvliviu on October 25, 2015, 09:04:34 PM
ok...it seem's to be like a chat
that's not fayr for the forum
better wait for futeko answer

bye bye and thousand "Thank's"
Title: Re: Decoding audio Dolby TrueHD
Post by: futeko.com on October 26, 2015, 09:54:09 AM
You will get 2 channel PCM stereo from ISOs with any audio format (True-HD, DTS-HD, AC3, DTS etc).

This will be the best you'll do with True-HD and the Logitech Z 906.

The Q5/Q10 (and in fact all other Android boxes) cannot decode True-HD and output it as 5.1 DTS (you say the Logitech Z 906 can only decode 5.1 DTS).

Title: Re: Decoding audio Dolby TrueHD
Post by: bvliviu on October 26, 2015, 01:05:22 PM
You will get 2 channel PCM stereo from ISOs with any audio format (True-HD, DTS-HD, AC3, DTS etc).

This will be the best you'll do with True-HD and the Logitech Z 906.

The Q5/Q10 (and in fact all other Android boxes) cannot decode True-HD and output it as 5.1 DTS (you say the Logitech Z 906 can only decode 5.1 DTS).
Like I said,unfortunately doesn't work
Title: Re: Decoding audio Dolby TrueHD
Post by: airsoft on October 26, 2015, 01:12:54 PM
You mean in best case MKV with Dolby TrueHD will be decoded to stereo PCM in future software release?
Seems a hardware(chipset) limitation :(
Better this than nothing.

Regards

You will get 2 channel PCM stereo from ISOs with any audio format (True-HD, DTS-HD, AC3, DTS etc).

This will be the best you'll do with True-HD and the Logitech Z 906.

The Q5/Q10 (and in fact all other Android boxes) cannot decode True-HD and output it as 5.1 DTS (you say the Logitech Z 906 can only decode 5.1 DTS).
Title: Re: Decoding audio Dolby TrueHD
Post by: futeko.com on October 26, 2015, 02:36:20 PM
You mean in best case MKV with Dolby TrueHD will be decoded to stereo PCM in future software release?
Seems a hardware(chipset) limitation :(
Better this than nothing.

Regards

I don't mean that. I don't honestly know what best case is. Himedia have been made aware of the problem and are looking at what they can do.
Title: Re: Decoding audio Dolby TrueHD
Post by: airsoft on October 26, 2015, 04:09:09 PM
I don't mean that. I don't honestly know what best case is. Himedia have been made aware of the problem and are looking at what they can do.

According my opinion and my wish :) of course, it should be implemented like this:
1) RAW7.1 => trying to send to a receiver 7.1 PCM
2) RAW5.1 => trying to send to a receiver 5.1 PCM (probably if source is 7.1 surround back and side should be mixed)
3) Auto => the principle of auto negotiation (if receiver supports 7.1 should send 7.1 PCM otherwise should send 5.1 PCM)
4) STEREO => should send stereo PCM
or maybe STEREO MODE should be at option "Auto" i.e. there is no auto negotiation.

But like I wrote at top of reply it is only my opinion.

Regards