Question

Honestly...does everyone just live with lip sync delay?


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Incredibly frustrating. Trying to use Sonos PLAYBAR + SUB + 2 PLAY 1s for home theater. Have tried it on two different TVs (Samsung & Vizio) with HDMI inputted content (cable box & DVD player), also with internal apps native to each TV.

No matter what there's a millisecond delay between video lip flap and sound coming through the Sonos system. Before you ask, yes of course I've tried every possible way to adjust sound sync using both the settings within the Sonos app and also within the TV menus. I've read every Sonos forum post on it, and it's never conclusive and only offers suggestions to do what I've already tried. And believe me: I've tried it all.

Anyone? I had high hopes for Sonos because I can't run wires in my house to the particular area I need the surround speakers to be. Alas nothing's working and the only remaining to do is return the whole thing.

Disappointed! (Kevin Sorbo voice)

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59 replies

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Ok, I'm happy there are satisfied customers out there, unfortunately these feel good stories aren't happening in my house! One other thing: I've noticed that the lip sync problem gets progressively worse when I fast forward a bit on programs I've recorded on my DVR. For example last night I tried to re-watch the latest episode of Silicon Valley...it started off fine, very slight lip sync delay per usual...but then I pressed the "skip forward 30 secs" button a bunch of times in rapid succession and then started playing it again. At that point the lip sync delay was dramatically worse within the very same program I was watching, I mean truly unacceptably bad - like those old dubbed kung fu movies. Does that tell anyone more tech savvy than me anything about what's going on in my system? Also: is there any chance a poor/low home wifi signal in the part of my house where this is set up is contributing to the problem? Thanks.
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Thanks but the issue never involves a need to delay the audio further. It's already delayed. It needs to go the other way...in a perfect world you'd tell the TV to delay the VIDEO by a millisecond to slow down to match the already delayed Sonos sound. Also, are you getting full 5.1 sound or only PCM?
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I'm talking about the picture and audio not being in sync. My wife is more sensitive to this than I am. It's most annoying when watching a news program. We have a 65" TV and sit 20 feet away from the screen (playbar, playsub, dual play:3s for rear). However, the audio is behind the image, not in front of it. There is no setting to delay the image unless you have adjustment settings in the television itself. The Sonos settings of lip sync delay only magnify the problem by adding delay. What's needed is a delay for the picture. My old 7.2 audiophile setup (pre-Sonos), had an AV receiver that had lip sync adjustments that allowed added time or subtracted time per input. That worked. Now, I just feed my wife a few drinks til the images are delayed from her eyeball to her brain and then it's in perfect sync for her. Too many drinks, and we even get dual 65" Sonys!
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Thanks but the issue nevers involves a need to delay the audio further. It's already delayed. It needs to go the other way...in a perfect world you'd tell the TV to delay the VIDEO by a millisecond to slow down to match the already delayed Sonos sound.
"Honestly...does everyone just live with lip sync delay? "

"Ok, I'm happy there are satisfied customers out there, unfortunately these feel good stories aren't happening in my house!"


Me Dies! 😉
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We don't have an official list, but there are some great suggestions here. From community recommendations. You can even ask about TVs in there and someone might have the answer for what you're looking for.
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Honestly i don't know , I am not a tv electronics guy . I will say that Best Buy nor Sonos neither offered that as an option .
They also are aware of the issue and are working on correcting it . Why should anyone have to add an extra expense to get correct audio sinc ?
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From what I gather from most posts regarding audio sync being behind the image, there just is no way to match up unless your audio is ahead of the video signal. I am wondering if anyone in the SONOS design facility might have thought about passing signal through the various SONOS devices that accept audio input from a television monitor to add an I/O pass through for video as well - most preferably HDMI - as that is where the industry standard is for consumer electronics passing imbedded audio with video. This way the video and audio can be retimed automatically internally in the device - or at least fine tuned in the app - to adjust audio sync without latency problems. Thought?
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Hi RRG, the audio sync issues are a known problem with Dolby Digital signals going through your LG TV. They're looking into it, but we don't have any specific details on when a fix might come. Swapping out Sonos devices won't fix this, and any soundbar that's playing Dolby Digital and connected to the optical on the TV will have the same problem.

I know other people who have the same TV and are using HDMI switchers instead. Their sources got the HDMI switcher, an HDMI cable goes from that box to your TV to give you video, and an optical connection goes from the HDMI switcher to your Sonos PLAYBAR. The lip sync issues will be gone with this setup since the TV is no longer responsible for handling the Dolby Digital audio.

As to the audio cutting out on your rear speaker, I'm seeing some wireless interference there which could be the source of the problem. If you have any wireless devices sitting next to your PLAYBAR or near your surround speakers, that could be the source of the wireless.

It looks like you have an open case with our support team that you can follow up with via email if you'd like to get some more information or have more trouble with the surround speakers. The technician is happy to assist.
Odd. I'm using a Samsung TV, set the Audio Delay on the SPDIF output to 20. Perfect sync.
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I have a Panasonic plasma TV and no issues with lip sync. My Apple TV and XBox go into an HDMI switch with optical output, as my TV doesn't pass 5.1 audio through from HDMI sources to the optical connection.
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I also have a Samsung TV and was able to sync picture and audio perfectly using the Samsung's adjustment option, did not even have to touch the Sonos adjustment.
I'd assert that a delay of only 1 ms would be impossible to discern.

PLAYBAR's inherent latency is 30 ms. This is to allow sufficient network buffering for the satellites (SUB, surrounds) to maintain sync without problem.

If lip-sync is an issue, and the TV can't delay the picture relative to its optical out, the only way to recover some latency 'budget' is to bypass the TV with the audio. TVs tend to take around 100-150 ms to process the video.

For external sources (cable, DTT, PVR, DVD, etc) with a digital out this is usually straightforward. Delay can then be added back as required, either in the PLAYBAR itself or in a digital audio delay device. The latter can be combined with a digital audio switch; google 'Felston' for example.
I use my Playbar with a 43" Visio TV in the bedroom and have no lip sync problems at all.
then I pressed the "skip forward 30 secs" button a bunch of times in rapid succession and then started playing it again. At that point the lip sync delay was dramatically worse within the very same program I was watching, I mean truly unacceptably bad - like those old dubbed kung fu movies.
Next time, turn the TV speakers back on and see if they're out of sync too. My suspicion is that the problem could be in the DVR.

is there any chance a poor/low home wifi signal in the part of my house where this is set up is contributing to the problem?

I don't see how it could.
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I also have experienced increased lip sync when fast forwarding/ reversing and/or pausing my Satellite PVR (Humax). If it's a recorded program I stop and restart else if it's time shifted I have to live with it.

I use an HDMI switch that outputs the audio via optical connector to the Playbar and uses ARC from the TV when appropriate.

I have the feeling that this "issue" with changing lip sync only happened with the addition of this switch.
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Thanks Ratty - I've already done that test. Sound comes out fine on the tv speakers in that scenario.
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Thanks Stuart - if it makes you feel any better I don't think it's your switch. I'm having the same exact problem with the PLAYBAR plugged directly into the TV optical audio port.
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Thanks Stuart - if it makes you feel any better I don't think it's your switch. I'm having the same exact problem with the PLAYBAR plugged directly into the TV optical audio port.

One thing that's for sure is that sensitivity to lip sync is not the same in everybody. One man's tiny lip sync and hardly noticeable is a real annoyance to somebody else - Of course once noticed it's impossible to "unsee".
HighDrive,

If your cable box offers an optical output, as a test, connect this output to PLAYBAR.
I faced the lipsync issue and managed to sort it. It was basically due to me using the tv remote to increase sonos volume ( sonos provide the capability to use your tv remote to increase the playbar volume). After several trials and errors - playing with tv settings, sonos app settings etc.. what i did was just reduce the tv vol down to 0 using the tv remote which also brought the playbar vol to 0. i then used the sonos app to increase the playbar volume qnd voila the echo effect was gone!!! Phew!!
Hey HighDrive. I'm like you. I too have a lip sync problem that nothing seems to be able to fix. I, like you, have read every forum and tried every fix. Just wanted you to know there are others out here like you. What ended up happening? Did you return your system? Did you eventually learn to live with the delay? Did you....dare I suggest...fix your problem? (I know, unlikely, but maybe?).
With Love,
jlyons

P.s. I feel connected to you on a deep level because we share this. Hope you feel the same.
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I had lip sync issues when using the optical output of my Philips TV, but only with 5.1 audio from films steamed from Apple TV - live TV, including 5.1 broadcasts, and recordings were fine. After trying several options, I've ended up with a One For All SV 1620 HDMI switch (http://www.oneforall.co.uk/accessories/signal-distribution/smart-hdmi-switch.html) and a Neet audio extractor (https://www.amazon.co.uk/dp/B00H8T1DJ8/ref=cm_sw_r_cp_api_2pnDybAD0D949) which sits between the TV and the switch and is then connected to the Playbar.

As long as all your devices support CEC the SV 1620 seamlessly switches between them (no UHD/4K support though). Other switches I tried either didn't auto-switch or did but also auto-powered off and sometimes didn't wake up.

Now I have no lip sync issues on any source (Humax Freeview box and Apple TV) and full 5.1 when it is available.
Hey HighDrive. I'm like you. I too have a lip sync problem that nothing seems to be able to fix. I, like you, have read every forum and tried every fix. Just wanted you to know there are others out here like you. What ended up happening? Did you return your system? Did you eventually learn to live with the delay? Did you....dare I suggest...fix your problem? (I know, unlikely, but maybe?).
With Love,
jlyons

P.s. I feel connected to you on a deep level because we share this. Hope you feel the same.


I'm the same. I've left it too late to return the sonos or the tv now though so I guess I'm stuck with out of sync audio.
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Never had an issue on my samsungs