There is a TV Dialog Sunc in the Sonos app.  It’s in Settings ( gear icon ) - Sonos room( Room with soundbar ) - TV Dialog Sync.

Thanks. I will check it out.

​@Manfred1621 

It depends on what kind of sync issue you are having. Is audio too late or the picture too late? 
The Sonos TV dialogue sync option will let the audio „wait“ longer to be output. So that will only be helpfull if the picture is too late. But as far as I know in most cases there are sync issues with audio playing too late. So I recommend to check your tvs settings for a different sync option that can let the picture wait. But most tvs also just have an option to let audio wait longer.

There also is a sync option on Sony tv models you can try. Maybe that will work better. 

You could also try to turn off any picture enhancing features on the TV. These might slow the picture down compared to the sound.

Good point, but in that case the additional audio delay option indeed would help. 

Lip sync issues between your Sony Bravia TV and Sonos Playbar can be frustrating, but adjusting a few settings may help. First, go to your TV’s Sound Settings and look for the AV Sync option to manually adjust the delay. In the Sonos App, navigate to Settings > System > ;Your Playbar] > TV Dialog Sync and fine-tune the synchronization. Also, try changing your TV’s audio output to PCM instead of Dolby Digital, as some TVs introduce delays when processing surround sound. If you're using an external device (like a cable box or streaming stick), connecting it directly to the TV and letting the Playbar receive audio from the TV via optical cable can sometimes reduce lag. If the issue persists, updating both your TV and Sonos firmware might help improve performance.

Moderator edit: Note - This reply may be AI generated

Get a better TV or better source device (unless the TV also the source device).

Hi ​@Manfred1621 

Welcome to the Sonos Community!

Sorry to hear of this issue you are having with lip-sync on your Sonos system.

It is possible that this issue can be resolved by simply rebooting your TV - please unplug it from power for at least a couple of minutes. This will make the TV’s software restart in a way that Standby does not acheive.

I hope this helps.

I hope I don’t jinx my current good results, but I think I have resolved the lip sync issue, tested against my different video sources.  I want to thank the community for their excellent guidance.  I made the following setting changes to apparent success:

In Bravia TV:

Settings, Picture & Sound, Audio System Settings, Digital Audio Output (Set to PCM)

In Sonos app:

Sonos, Playbar, Home Theatre, TV Dialog Sync (Set to level 3, midpoint of range)

Fingers crossed; I hope the lip sync issue doesn’t return.

Thanks

Hi ​@Manfred1621 

I am happy to hear that you are seeing an improvement, but please be aware that setting the Digital Audio Output to PCM means you will only ever get stereo sound, and never surround sound.

I hope this helps.

Hi Manfred1621.

I messed around with the TV Dialog Sync tonight and I can see a difference between 1 to 5. Seems like 5 was closest but I will try 3 and fine tune. I never thought that the TV picture may be delayed because of my settings and processing time.      

When I got the Sonos soundbar I had to set the digital Audio Output to PCM because in addition to the Sonos Soundbar we use Sennheiser headphones. The transmitting the tower is connected via Optical Audio. Going back and forth between the two I had to go into the TV menus to change something. It was very annoying.

Since we now live in condo I had to give up my surround system. No point in having that without a dedicated subwoofer IMO. A subwoofer is the best way to make enemies in an apartment or condo. My wife is happier because she never liked all those speakers anyway. The headphones are amazing. Crystal clear dialogue with deep base and I don’t have to keep turning the volume up and down for gunshots, explosions, etc. The lip sync is fine for reason.    

We got the Sonos Beam 2 because my new 77” Bravia OLED is a wall mount. I think because the old 55” was table mounted the sound bounced off the back wall. We found it hard to hear the dialogue on the new TV without cranking it very high. The Beam with voice enhancement and rich sound is spectacular. I can feel a wee bit of thump coming at me but since I placed the Beam on sound absorbing pads I don’t feel it on stand or the floor.         

We watch TV talk shows, news, sports, etc using the Beam so we don’t need surround. Can’t get it anyway. We don’t miss it for music. For all the series and movies we use the headphones. Best of both worlds for our situation.