Sonos Arc lip sync issues.

I have the same issue with a Philips OLED TV. I complained to Sonos & Philips. Sonos said it was the TV. Philips sent me an upgraded TV but the issue remains. Sonos say it is the TV that is the causing the issue when trying to process the 5.1 signal. My workaround is an optical splitter which isn’t ideal. They say TV’s with eARC are preferable but I don’t know if that’s true. I have a Sonos Beam. Does the Playbar have the same issues?

Would the HDFury solve my issues?

I am contemplating asking Philips to take the TV back and I will get another TV (with eARC). But reading the forums I may get another make TV with the same issue. So frustrating.

Hi All,

I had massive issues with Lip sync and they now seem to be solved.

My Setup  is  a Sonos Arc plugged into the E-ARC HDMI port on a Samsung QE85Q70T. I also have a NVidia Shield Pro running Plex plugged into the TV via a HDMI port.

My Audio sync issues were much more prominent on the Netflix and Plex on the Nvidia shield.

My fix was as follows:

1. On the Samsung TV go to TV > Setting > Sound > Expert Settings
2. Digital Output Audio for…. option was set to “Auto”. I changed it to “Pass-Through”
3. Digiti Outut Audio Delay was set at 100. I changed it to 0

My issues now seems to be resolved including for True HD 7.1 Atmos Blueray rips on Plex.

. 

Hope this helps someone.

this makes so much sense. My video is ahead of audio for some reason. I have Arcana and a projector. So annoying to not be able to get it in sync. 

@airbag41 . Do you mean video ahead of audio? That is surprising with the Arcana.

Yes video ahead of audio. I can’t figure it out. All was until about 3 or 4 months ago and then something happened. I suspect it is on the ATV side but even though I run the wireless sync option it doesn’t change anything, even if I run it in different frame rates. I’m going to test today with an old BR player and see if can isolate the issue but so far no luck.

So just tested with BR file and the delay is the same. So now I know it is not ATV but somewhere in the Vertex 2 > Arcana > projector / Sonos side. 

Could you confirm what all the connections are in your setup. What are the sources (clearly ATV is one)?

Sure, I have ATV and a BR which goes in to a Hd Fury Vertex 2, then that goes in to Hd Fury Arcana. The arcana splits and eArc goes to Sonos Arc and video goes to Epson. The lip sync issue seems to be that the video is ever so slightly ahead of the audio. Just enough to be annoying. I have tried resetting and unplugging anything but no luck. 

Sorry if this has been said, but the solution is obvious, but not trivial. TV manufacturers should allow configurable picture delay. 

Not letting Sonos off the hook, but logic dictates that the onus of processing delays lies on the eArc processor (e.g., the TV), not any sound system.

In a fantasy world, processing power would obviate this need, but we know that won't happen soon, if ever. 

Sonos can only play the signal as quickly as it is provided it.