Topic: Terrible sound in mkv files with AAC sound [Solved] (Read 1640 times)

maid · « **on:** January 31, 2022, 10:23:10 pm »

I have some TV shows mkv video (video:hevc, audio aac)

The voices are muffled and sometimes no voices at all.

I use bit streaming and red October HQ

all other files are ok

They used to play fine but not sure at what stage of upgrade it stopped working, as the last time they were played was last December

maid · « **Reply #1 on:** February 01, 2022, 04:41:19 am »

somebody please help. I can't play half of my media

zybex · « **Reply #2 on:** February 01, 2022, 07:59:24 am »

This sounds like you're playing 6 channel audio to 2 speakers without downmixing. Since you're bitstreaming it's up to your receiver/TV to do the downmixing, so check what options you have there. Perhaps it just doesn't support 6ch AAC or whatever specific variant your files have.

As an alternative, disable bitstreaming in MC so that you can enable 6 channel downmix.

Hendrik · « **Reply #3 on:** February 01, 2022, 08:00:28 am »

AAC is never bitstreamed. MC is decoding the audio. Best would be showing a screenshot of the Audio Path during playback.

maid · « **Reply #4 on:** February 01, 2022, 04:45:52 pm »

as previously stated...They used to play fine but not sure at what stage of upgrade it stopped working, as the last time they were played was last December

maid · « **Reply #5 on:** February 01, 2022, 04:47:31 pm »

Quote from: Hendrik on February 01, 2022, 08:00:28 am

AAC is never bitstreamed. MC is decoding the audio. Best would be showing a screenshot of the Audio Path during playback.

Nothing has changed in the setup and these files used to play fine. all other movies tv etc play fine..

jmone · « **Reply #6 on:** February 01, 2022, 04:52:08 pm »

This is the screen shot Hendrik asked for to show the Auto Path (click on the little Setting Icon when the video in question is playing in Std View and post the screen shot). I think zybex is correct but this will show what MC is doing.

maid · « **Reply #7 on:** February 01, 2022, 05:23:53 pm »

is this ok?
Can I delete madvr folder to try re download it

jmone · « **Reply #8 on:** February 01, 2022, 05:45:12 pm »

No need to delete madvr, as it is an audio not video issue.

Looks like MC is doing it's job reading 6ch and outputing 6ch.

Is the Onkyo receiver showing it is receiving 6ch and outputting 6ch?

jmone · « **Reply #9 on:** February 01, 2022, 05:50:23 pm »

Also check in Windows --> Control Panel --> Sound --> and Right Click on the Audio Device that is being used --> Configure Speaker and make sure it is set to 5.1 (or whatever # of speakers you have connected to the Onkyo). There is a "Test" button that will play a short sound across each of the speakers in turn.

maid · « **Reply #10 on:** February 01, 2022, 05:52:53 pm »

will check control panel but as I said all other files are playing just not aac

maid · « **Reply #11 on:** February 01, 2022, 06:15:11 pm »

this file plays fine
I am confused, went into control panel and it is set to 5.1 onkyo but on testing only plays on the two front speakers.

When playing tv movies etc all sound is coming out from the speakers as expected

maid · « **Reply #12 on:** February 01, 2022, 07:13:23 pm »

On further testing not all aac sound is affected, just the ones with HEVC

BryanC · « **Reply #13 on:** February 01, 2022, 07:42:15 pm »

You might try disabling hardware accelerated decoding in Video settings.

maid · « **Reply #14 on:** February 01, 2022, 10:04:39 pm »

I have just downloaded a file in HEVC with aac audio and its fine.
all very odd

maid · « **Reply #15 on:** February 02, 2022, 08:28:44 pm »

also note I did a google on why the computer was only playing on two speakers.
checked the drivers and the nvidia driver was not there. deleted the drivers and rebooted the computer and tada its back..
now tests on all speakers

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Author Topic: Terrible sound in mkv files with AAC sound [Solved] (Read 1640 times)

maid

Terrible sound in mkv files with AAC sound [Solved]

maid

Re: Terrible sound in mkv files with AAC sound

zybex

Re: Terrible sound in mkv files with AAC sound

Hendrik

Re: Terrible sound in mkv files with AAC sound

maid

Re: Terrible sound in mkv files with AAC sound

maid

Re: Terrible sound in mkv files with AAC sound

jmone

Re: Terrible sound in mkv files with AAC sound

maid

Re: Terrible sound in mkv files with AAC sound

jmone

Re: Terrible sound in mkv files with AAC sound

jmone

Re: Terrible sound in mkv files with AAC sound

maid

Re: Terrible sound in mkv files with AAC sound

maid

Re: Terrible sound in mkv files with AAC sound

maid

Re: Terrible sound in mkv files with AAC sound

BryanC

Re: Terrible sound in mkv files with AAC sound

maid

Re: Terrible sound in mkv files with AAC sound

maid

Re: Terrible sound in mkv files with AAC sound