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Passthrough issue

Any issues that are tvOS specific
cosmoxl
Posts: 1374
Joined: 12 Dec 2015, 14:16

Re: Passthrough issue

Post by cosmoxl » 30 Mar 2018, 18:13

Oscar_206 wrote:
30 Mar 2018, 18:04
haffi@haffi.is wrote:
30 Mar 2018, 14:10
Netflix and Plex use PCM audio, when they are sending it. Wether its 5.1 DD or DTS from their movies. It just sends PCM
If you set up Dolby in atv Settings, Netflix will also have Dolby, no pcm
If your audio device can take multi channel PCM then best quality is best quality. The apple tv is decoding incoming audio (e.g. dolby digital plus 5.1, common with netflix and itunes) and outputting untouched (assuming reduce loud sounds is off) PCM to audio sink.

Setting to dolby digital 5.1 forces the apple tv to encode already decoded audio to DD 5.1, which technically decreases quality. This option is necessary for some people who have devices that don't take multi channel PCM.

Zodler
Posts: 12
Joined: 07 Mar 2018, 01:39

Re: Passthrough issue

Post by Zodler » 31 Mar 2018, 00:24

I have the same problem.

Question, when I disable passthrough, no ugly noise but is it output as stereo?

ATV audio is set to 5.1 Dolby Digital, MrMC audio is set as 5.1 but no passtrough. HDMI Cable goes into my LG TV and audio comes out through an optical cable into my soundbar. In this case the soundbar does not show surround. It's stereo, why?

cosmoxl
Posts: 1374
Joined: 12 Dec 2015, 14:16

Re: Passthrough issue

Post by cosmoxl » 31 Mar 2018, 00:28

Zodler wrote:
31 Mar 2018, 00:24
I have the same problem.

Question, when I disable passthrough, no ugly noise but is it output as stereo?

ATV audio is set to 5.1 Dolby Digital, MrMC audio is set as 5.1 but no passtrough. HDMI Cable goes into my LG TV and audio comes out through an optical cable into my soundbar. In this case the soundbar does not show surround. It's stereo, why?
some TVs are limited to only stereo out via ARC

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davilla
Team MrMC
Posts: 3516
Joined: 26 Oct 2015, 17:01

Re: Passthrough issue

Post by davilla » 31 Mar 2018, 00:46

set mrmc channels to two, enable transcode, disable passthrough

sdsnyr94
Posts: 37
Joined: 29 Nov 2016, 18:03

Re: Passthrough issue

Post by sdsnyr94 » 31 Mar 2018, 01:25

Seems to affect the native Plex app too... I have a few movies that the audio is playing at high speed through Plex.

Same videos give noise through MrMC...

Did Apple screw the pooch on the update, or is this something they 'fixed' that now the apps need to adjust to?

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davilla
Team MrMC
Posts: 3516
Joined: 26 Oct 2015, 17:01

Re: Passthrough issue

Post by davilla » 31 Mar 2018, 01:51

sdsnyr94 wrote:
31 Mar 2018, 01:25
Seems to affect the native Plex app too... I have a few movies that the audio is playing at high speed through Plex.

Same videos give noise through MrMC...

Did Apple screw the pooch on the update, or is this something they 'fixed' that now the apps need to adjust to?
It was broke in beta's for 11.3, we warned everyone to stick to 11.2. And then Apple pushed out the broken 11.3. Go figure...

SUPERBIF
Posts: 125
Joined: 31 Mar 2016, 06:43

Re: Passthrough issue

Post by SUPERBIF » 31 Mar 2018, 06:40

I have the same problem with the ugly noise. I haven't joined any betas just updated normally. The same problem no matter what version of MrMC I try. 3.51 or 3.6 still the same problem. What can i do to get it fixed?

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amet
Team MrMC
Posts: 2109
Joined: 26 Oct 2015, 16:59

Re: Passthrough issue

Post by amet » 31 Mar 2018, 06:57

I thought I answered what the possible "fix" is ... viewtopic.php?f=15&t=3991#p16500

does that not work for you?

Londo2017
Posts: 35
Joined: 19 Sep 2017, 15:37

Re: Passthrough issue

Post by Londo2017 » 31 Mar 2018, 14:18

Oh no it happened to me also.

Today I got an apple tv update - and now the movies that worked yesterday do not work today... :-(

@amet Yes, that works, but then we lost dts and so on, arent we.

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amet
Team MrMC
Posts: 2109
Joined: 26 Oct 2015, 16:59

Re: Passthrough issue

Post by amet » 31 Mar 2018, 14:20

You just loose dts/Dolby light on the receiver... sound quality is unchanged

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