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Original topic:

Lip sync on Q90R with 5.1 input

(Topic created on: 30/05/19 09:01)
Apprentice
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I -- and judging from posts in various fora on the web, a lot of other customers -- experience lip sync issues with 5.1 surround sound input on the Q90R (firmware v1066).

 

Specifically, I experience this on TV channels that are broadcast with 5.1 sound, but not on TV channels that are broadcast with only stereo sound.

 

This means that I can watch a show on one TV channel with the (stereo) sound and picture in perfect sync, and then simply change channel to another TV channel to experience a mismatch between the (surround) sound and picture. Switching back to the first TV channel, the (stereo) sound and picture is again in perfect sync. So lame 😕

 

The lip sync issues are present using the Q90R built-in speakers as well as with a Sonos Amp -- however, again, only with 5.1 TV channels, which also means that I cannot use the options for adding a general delay on the sound/picture as that, while perhaps fixing the 5.1 TV channels, will simply shift the issue to the stereo TV channels.

 

@Samsung: Needless to say, having such issues on a flagship model is really bad.. What are the plans for fixing this (expectedly, through a firmware update to get the TV to process 5.1 sound input properly)?

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Explorer
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@m-oc wrote:

The TV comes with the soundbar because the TV display is so thin (less than 4mm) all of the workings of the TV are also in the soundbar (imagine a One Connect Box and Soundbar combined).  So the sound bar is effectively the internal speakers of the TV. No optical or ARC required.  Its not a soundbar that you can buy separately.

 

I have to say that the sound bar isn't the most attractive in my opinion which is a shame considering the TV looks so good.

 

The screen does go pretty bright (if you turn off things like Eco mode) and it does have an anti reflective property but if your room is very bright then it may not be enough when the screen is quite dark for example.

 

 


THANKS...and enjoy the LG!
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@bcab17 wrote:
I agree...PCM is not something I would be satisfide with. ...

So what sound format is your Roku Ultra sending through the TV, that doesn't give you lip sync problems?

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Explorer
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I have the Roku Ultra set to output DD, DD+, and Atmos...the audio codec is app-specific, and title-specific. I've only had time to check a handful of titles from the three apps that we mostly use, Netfix, Amazon Prime, and Hulu...but I've been so focused on working through the cable box lip sync problem that I'll need to check Roku again.

 

I can tell you that one show/movie came through in Atmos (locked out sound mode options on the soundbar), and other shows/movies came through in DD+...and no lip-sync issues.

 

Forgive me, but it's been a crazy week of ownership (for these two Samsung products), and have been trying everything...I can't be sure if I was using Netflix from Roku or the internal tv app. I will definitely check the Roku more extensively over the next few days (unfortunately, work gets in the way).

 

I'm not even sure what advantages there are (if any) to using Roku for things like Netflix over the Samsung's internal app. Yes, the user interface from Roku is as good as it gets, but if picture quality, and sound quality through the soundbar are the same, I may just move the Roku to another room.

 

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Explorer
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"Maybe find something else for the grandchildren to do ;-)"

 

Haha...that's good advice...we try, we try...

 

Honestly, they're not the problem...I am. I don't know if you call it OCD, but just knowing that burn-in is a possibility, I know for sure that every time I'm watching CNN or ESPN, all I'll see is that darn station logo in the corner...

 

I know it's crazy, but as soon as the Samsung issues started happening, I've already started noticing all the static images on the many different channels we watch (considering if I should swap the Q90R for a C9).

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Explorer
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Dolby Digital, yes... Dobly Digital Plus, no.

https://www.lifewire.com/digital-optical-connection-1846881

"The types of digital audio signals that can be transferred by a digital optical connection include two-channel stereo PCM, Dolby Digital/Dolby Digital EX, DTS Digital Surround, and DTS ES."

"Digital audio signals, such as 5.1/7.1 multi-channel PCM, Dolby Digital Plus, Dolby TrueHD, Dolby Atmos, DTS-HD Master Audio, DTS:X, and Auro 3D Audio cannot be transferred via Digital Optical connections. These types of audio signal formats require the use of HDMI connections."
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@slomar wrote:
Dolby Digital, yes... Dobly Digital Plus, no.

https://www.lifewire.com/digital-optical-connection-1846881

"The types of digital audio signals that can be transferred by a digital optical connection include two-channel stereo PCM, Dolby Digital/Dolby Digital EX, DTS Digital Surround, and DTS ES."

"Digital audio signals, such as 5.1/7.1 multi-channel PCM, Dolby Digital Plus, Dolby TrueHD, Dolby Atmos, DTS-HD Master Audio, DTS:X, and Auro 3D Audio cannot be transferred via Digital Optical connections. These types of audio signal formats require the use of HDMI connections."

Hi, I don't know if threads are mixed up now but the information in the quoted link is not 100% correct. I don't know it there are different flavours of Dolby Digital 5.1 but I have it working through S/PDIF, both optical and coax. The problem with the Samsung Q90R is that this audio format get massively delayed when routed through the TV (HDMI in to Opto out) but some users report that they don't have this problem and some say it disapeared with the 1335 firmare (which I haven't tried).

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I realized after I posted that, the email said that a moderater merged topics... so, I guess something is out of order.  It was a reply to someone else's question about whether DD can be passed through optical or not.  

 

And yeah... I see the subject of this thread changed which wasn't the one I was previously subscribed to.  So, seems like rather than Samsung addressing the problem in the original thread, they just decided to merge two unrelated topics to confuse us more.  

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Explorer
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Yea, but the main point is that Dolby Digital 5.1 indeed works through Optical. (Also through Q90R but, maybe now corrected?, affected with massive audio delay.)
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Very strange over the merging of threads.  Just another bad thing against Samsung I suppose. 

My experience is that the Q90R TV can pass through Dolby Digital 5.1 via the optical cable. However, as per the original thread, I experience lip sync issues with this. Only in PCM stereo could the lip sync be correctly managed. 

I also tried connecting the external source to the Q90R sound bar directly. The lip sync is then perfect and of course you can benefit from even better sound such as Atmos. However, in this configuration I had ARC CEC issues with the remote control. 

Office of CEO UK for Samsung advised me about 3 weeks ago that they couldn't guarantee if or when either of the above issues would be solved. I therefore returned both items. So I can't say if the recent update had fixed it or not. I think I heard not from another post earlier in the week. 

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Hey @slomar and @userjYtfoTda0t 

 

I moved the post to see if the information on this thread helps. If this is not the case, I will encourage you to create a new post with your specific information so we can try to help. 

 

Alternatively, you can give our Specialist a call on 0333 000 0333 to have a look into this with you. 

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