Help - FLAC 24bit 192KHz audio files not playing

Hello,
My Plex Media Server installation is not able to play 24bit 192kHz FLAC audio media. I have tested these files in many ways and there are no issues with the files. I am using the latest Firefox browser for playback.

I am able to play 16bit 44.1kHz FLAC audio media.

Can anyone advise on how to fix this or where to start troubleshooting?

-Michael

This is known issue. Developers are working on fixing this. I hope soon, because this issue was reported last week.

@hytash said:
This is known issue. Developers are working on fixing this. I hope soon, because this issue was reported last week.

thanks for the update

so almost 4 YEARS later and where are we on this?

2 Likes

OP never mentioned what type of Plex client he used on what hardware.
He also didn’t mention if the client was in the same local network as the server or if it was remotely playing.

That is very important when it comes to debugging these kind of issues

Well now, ALL FLAC audio plays back at 48kHz. It’s been this way for months. 96k and 192k are ignored and all multi-channel flac audio is downmixed (to put it nicely) to 2.0. It amazes me that a platform that more and more purports to care about audio and audiophiles would leave this so utterly broken. It worked for years. Been broken for many months. First world problems I know, but damn man, it sucks. The fact that I’m apparently in a minority of user-types is even more frustrating.

I have a QNAP NAS as server and Shield as client HDMI direct into Denon receiver. It’s a simple setup that has worked for years. And now, it doesn’t YEt…Plex for Kodi works just fine (although it has other frustrations). What is with that?

2 Likes

I have the same high bitrate FLAC woes that @plexcapacitor is experiencing. In my case I run PMS on Windows Server 2012 R2 Essentials and use Shields as my Plex clients. So it may be an Android TV Plex client issue.

The Plex add-on in Kodi plays high bitrate FLAC just fine.

I can also play high bitrate FLAC via my Denon AVR using Plex DLNA.

Please help us out with some high bitrate FLAC passthrough!

2 Likes

Kodi doesn’t use FFMPEG for the player which is why it works. Plex AND Emby BOTH use ffmpeg and do NOT support HiRes stereo audio…

1 Like

It does pass 96kHz DTS-MA stereo without converting it though…

By “support”, do you mean passthrough or something else? It apparently supports it in some capacity since it’s re-encoding it to a lower sample rate. We’re just asking for it to pass through, unaltered, to our AVR’s.

1 Like

Also - and this is important - Plex has played 24/96 and 24/192 audio over HDMI to my AVR for years. So it did support it at one time. What changed? And I thought Emby claims to support 96k stereo FLAC on Android. I’ve always had varying stability problems playing 5.1 FLAC with Plex over the years, but never high-res FLAC. That has always worked…at east according to my AVR.

1 Like

they don’t support STEREO playback

nothing over 48KHz

For which codecs? I can play DTS-HD MA 96kHz stereo music tracks in 96kHz stereo on my AVR. So it apparently has some support for high resoluion stereo.

Roku client?

Nvidia Shield

My shield doesnt do that and my preamp supports 192/24. I can get all that through mxplayer though

Please clarify…

It won’t pass any audio above 48kHz to your receiver? Or is it just an issue with FLAC and PCM like I am experiencing?

1 Like

Outside of plex via mxplayer it delivers 192/24bit

1 Like

And therein lies the issue. Just like the rest of us unable to play PCM and FLAC audio above 48kHz from the Plex app on the Shield, you’re having to resort to an alternative app to listen to it without downsampling. Plex is falling a bit short of the “personal media paradise” it’s advertising.

Other apps’ ability to pass high resolution audio because they’re different software, doesn’t let Plex off the hook IMO. We understand the current software Plex is using (exoplayer, ffmpeg, etc) has issues bitstreaming high-resolution PCM and FLAC (also DTS-HD HR), and the other apps that can are “different”. The frustration is that there doesn’t appear to be any interest or commitment to resolving this (that’s communicated on the forum anyway). I’m hearing quite a few crickets where the Plex team is concerned though regarding this issue.

So at this point it appears that Plex wants to be the “one stop shop” for all one’s personal media…to a point.

4 Likes

I really want plex to be the center of my media world, but stuff like this make it very hard.
Can we not just get pure bitstream/passthrough for all audio? I don’t need plex to be smart with my audio, let my receivers do all the work!

4 Likes