Apple TV 4K audio sync issues with enhanced player

Yes, I’m also having the same exact problem. When playing 4k HDR files I have this issue of the audio cutting out after awhile.

Yeah unsure what is going on. But spacial audio just doesn’t work in some codecs now. audio seems worse on my C2 and soundbar. I have to switch to infuse. But sometimes infuse does it too? So I am unsure where the problem lies.

Anyone brave enough to see if tvOS 17 has improved this at all?

Dv profile 8.1 will work with the old player on tvOS 17. Only improvement that will be found which has nothing to do with Plex.

This is frankly embarrassing for the Plex team. How can this topic be 3 years old with no fix? Infuse, a 3rd party application, works perfectly.

Why does Plex insist on using the “enhanced player?” What benefits does it bring the user? Does any user here prefer it over the native player?

2 Likes

Its main purpose is to give Plex more control (ironic, yes) over the formats that can be supported directly (without transcoding) by using MPV vs Apple’s AVPlayer. It also allows for better subtitle handling, improved video quality, etc. If audio delay wasn’t an issue, I can’t see why it wouldn’t be preferred by everyone.

1 Like

I was under the impression that Infuse played more formats. Is that incorrect?

It may, but I’m not sure as I only tried Infuse briefly months ago. I think it has better support for modern audio formats from what I’ve read. AFAIK it’s just a direct streaming client though, without any ability to transcode – which would generally require something running where the files reside or magically hooking into Plex’s transcoding API (if that’s even possible). So they are different.

Personally I need transcoding (for remote access) and prefer Plex’s GUI even though Infuse would work fine for LAN streaming. So I’ve been using the new delay slider on the Apple TV’s around the house, which luckily seems to be consistent across media I’ve tried so far. Really hope that is the case, otherwise I may take a hostage. I’ve been using these files to set things (with native frame rate enabled) which seems to work well.

1 Like

Curious what offset number you have settled at?

I find I am around +175-200ms.

Have you come across a good summary of Infuse and Plex’s video codec support and playback quality anywhere? I ask because I also have the same audio lipsync issues, especially if I use new video player in Plex and have Match Framerate and Range both turned on in Apple TV video settings. My experience has been that Infuse will always play the audio in sync (across a variety of codecs and file formats), but that the video quality is sometimes “grainy” - likely transcoded or modified in some way. It’s subtle but very real (and something I’m sensitive to). So I’m not convinced that Infuse is the ultimate solution that many think it is - guessing some just may not notice the degradation in video quality in some cases.

It does play more formats but they use a completely different player.

Very similar. So far I’ve had two @ 150ms, two @ 175ms, and one @ 200ms. I have a variety of different displays and AV gear involved though, along with a mix of mainly Apple TV 4K gen 3 and some gen 2.

I haven’t, but can’t say I’ve really looked. I’m not surprised they look different though, as Infuse uses a player of their own design vs mpv which Plex leverages. Personally I’ve been happy with Plex outside of of this endless sync issue. Manually setting the delay in one app doesn’t feel right, but at least it’s an options now – hopefully just temporary one though.

1 Like

How do you set the audio delay for just Plex?

Turn off direct play and use direct stream and it should fix the issue. Its the only way I get mine to work.

The latest Apple TV Plex client has a delay slider. During playback slide down the top menu and choose the Playback Settings section. You’ll find it there at the bottom.

2 Likes

this is what I find funny about this thread. Everyone saying “infuse works perfectly” when it doesn’t. Infuse also identified an audio sync problem back in September 2022. I also have the issue on my setup.

They managed to fix it for most but for those that it couldn’t be fixed for what did they do…implemented an audio offset that has to be set by the user. Theirs is in 10ms increments but nevertheless its the exact same issue as the plex app has and they gave us the exact same fix Plex has, yet no one is willing to accept the audio offset from Plex as a fix.

I set infuse to 100ms and it works perfectly now. Plex I set to 75ms and it works perfectly. Don’t understand why the infuse fix is being accepted but the Plex fix isnt.

1 Like

I have mine set at 75ms and it works for everything I play. I haven’t had to change it once so far.

See this: Apple TV 4K audio sync issues with enhanced player - #328 by SEL69

The Infuse issue is the second one, related to tvOS 16 regression. This thread is about the first issue.

2 Likes

That’s irrelevant really. The facts are still infuse audio doesn’t work perfectly for everyone like people are saying and their fix was to add an audio offset exactly the same as plex has. The symptoms of the issue are identical and the solution is identical, yet people are happy with infuse but not with plex.

I guarantee you that there are people here that have lip sync issues due to their device chain, TV settings etc, in addition to the issue within Plex for the ATV.

It is these people who would still see lip sync issues within Infuse as well. Let’s not muddy the waters.