Hi @jaydrum.

Thanks for reaching out and welcome to the community!

I appreciate your detailed post outlining your concern, let me help and try to figure this out.

May I know if the audio is behind or ahead of the video?

Please refer to this article that provides steps to take if the audio coming from your Sonos home theater product is out of sync with the video.

If the above advice was followed and the issue persists, please submit a diagnostic report through the Sonos app and provide us with the confirmation number, so I can see if there’s anything else causing this issue.

Let us know how it goes and if you have any questions feel free to reach out, we’re always here to help.

Thank you for the reply.

Here is the setup:

1. Comcast XG1 cable box going to brand new QLED Samsung TV via HDMI
2. Sound going from Sansmung TV to Playbar via optical cable.

Problem:

1. Video is ahead of the audio.
2. Sound delay set to 0 in Samsung sound settings
3. Sound delay set to 0 in Sonos app

So basically, the video is ahead of the sound and there is no way to correct this.

Does the cable box have optical out? If so wire that directly into the Playbar.

This should prove that the TV is the problem, if nothing else.

(I assume you have the latest TV firmware update).

The cable box Does have an optic out but if I wire the sound bar directly to the cable box, if you use any of the TV apps like Disney+ and Netflix they’ll be no sound as the sound bar isn’t hooked up to the tv

Yes I have updated everything

My, admittedly older/humbler, Samsung TV lets me move the optical audio ahead of the video more than enough to compensate for the inherent 30-40ms latency in Sonos (or Bluetooth aptX low latency). It does sound like the TV is the problem here.

One possibility would be to use an external streamer for Disney+/Netflix/etc, and an optical switch to select between that and the cable box. In essence treat the TV as a monitor.

If even the built-in TV apps give this problem, then I would return the TV at this point, while you can.

I have this exact issue and have had it for over a year.  Our entire house is Sonos.  Never had any issue. I bought the Samsung 8K 82 inch TV right when it was released.  Audio sync is horrible.  Video is ahead of the audio and its not even close.  Geek Squad cant fix, Samsung blames Sonos, Sonos seems to not have a fix for this.  Only the Lip Sync delay which does nothing for this.  Very frustrating spending $7,000 on a TV and $2000 on audio and have this issue. 

• jaydrum

Did you ever get it fixed or just return it all? 

I bought the new samsung neo qled 8k and had the same problem!   I have the arc, 2 fives and new sub. Extremely annoying paying this much money and it looks like like I am watching a dubbed TV show with the terrible lip sync.  After trying a ton of different things with the digital output delay on the tv and the sonos delay setting nothing changed.  I finally set the digital output to pass-through in expert settings and it got much better and I can actually watch it.  Now on to dealing with some video stuttering...amazing these issues with all this top end stuff. Hope this helps!

Hi @Supyoscn 

Thanks for sharing that fix!

Everyone, first off if you are using the optical audio cable to sonos, you will NOT get the full audio experience, PLAIN AND SIMPLE. Atmos will only work via HDMI!

So now those whom are using the HDMI correctly and have this issue, there is ONLY ONE OPTION. (Please note I do not have the 8K Television, but believe it has eArc in which that needs to be utilized if it does have such).  The solution is the HD Fury 4K ARCANA only. Full Atmos and not a single sync issue since. 

The OP has a Playbar..