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ac3 pure audio file does not play on ATV 4k

Any issues that are tvOS specific
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chris_germany
Posts: 13
Joined: 20 Dec 2015, 08:05

ac3 pure audio file does not play on ATV 4k

Post by chris_germany » 13 Aug 2018, 17:11

I have a collection of ac3 files which were extracted from a sat receiver transport stream (*.ts) containing Dolby 5.1 audio recordings.

These files played back perfectly some time ago when the passthrough was still supported by Apple TV. Now when I try to play these files I see my receiver switching to Multichannel Input via HDMI but nothing happens. No seconds are counting no progress bar movement nothing.

I tried now to play this file with the native emby app on ATV 4k and there the files is played perfectly on my receiver with with multichannel input.

This indicates to me that there might be a solvable playback issue in MrMC.

I can provide a 9MB sample of an ac3 file with this problem if this is of interest.

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davilla
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Joined: 26 Oct 2015, 17:01

Re: ac3 pure audio file does not play on ATV 4k

Post by davilla » 13 Aug 2018, 18:44

sample please.

chris_germany
Posts: 13
Joined: 20 Dec 2015, 08:05

Re: ac3 pure audio file does not play on ATV 4k

Post by chris_germany » 13 Aug 2018, 20:21

Thanks for looking into this.
this is the link to a sample file in my dropbox:

https://www.dropbox.com/s/mn6wyi328v4f4 ... V.ac3?dl=0

I have to admit that this is something special because it is only 5.0 without LFE
Codec: A52 Audio (aka AC3) (a52)
Type: Audio
Channels: 3F2M (5.0)
Sample rate: 48000Hz
Bits per sample: 32

chris_germany
Posts: 13
Joined: 20 Dec 2015, 08:05

Re: ac3 pure audio file does not play on ATV 4k

Post by chris_germany » 20 Aug 2018, 09:38

Hi davilla,

did you had the chance to try this 5.0 AC3 sample. Can you confirm this error?

kind regards
Chris

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davilla
Team MrMC
Posts: 3593
Joined: 26 Oct 2015, 17:01

Re: ac3 pure audio file does not play on ATV 4k

Post by davilla » 20 Aug 2018, 21:19

chris_germany wrote:
20 Aug 2018, 09:38
Hi davilla,

did you had the chance to try this 5.0 AC3 sample. Can you confirm this error?

kind regards
Chris
not yet, missing thumbs sucked down my weekend

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

Re: ac3 pure audio file does not play on ATV 4k

Post by davilla » 24 Aug 2018, 00:38

fixed in testflight (3.7.0)

chris_germany
Posts: 13
Joined: 20 Dec 2015, 08:05

Re: ac3 pure audio file does not play on ATV 4k

Post by chris_germany » 24 Aug 2018, 22:30

Hi davilla,

I just tested the new beta and can confirm the fix.
Thank you so much for this.
There are at least 3 German radio broadcaster sending the classical music in 5.0 instead of 5.1

kind regards
Christoph

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