topic Re: Lip Sync issues with the Sky Q Box in Sky Q

Lip Sync issues with the Sky Q Box

Chris581 — Thu, 26 Dec 2024 10:23:31 GMT

I'm having Lip Sync issues with my Sky Q Box.

I've discovered if you turn off the Dolby on the box it cures the problem.

So does that mean the only way to watch Sky with the voices in sync with the picture is with the Dolby turned off.

I've had numerous visits from Sky engineers. Brand new Tv, Sound Bar, HDMI cables. House and dish wiring check by Sky engineers and still have this problem.

Sky doesn't seem to have a answer to this scenario.

Re: Lip Sync issues with the Sky Q Box

PandJ2020 — Thu, 26 Dec 2024 10:50:26 GMT

@Chris581 wrote:
Brand new Tv, Sound Bar, HDMI cables.

How are they connected?

Are you using ARC?

Re: Lip Sync issues with the Sky Q Box

cuke — Thu, 26 Dec 2024 11:42:11 GMT

Also make and model of the tv, if it is a Samsung set the audio expert settings to passthrough..

Re: Lip Sync issues with the Sky Q Box

Chris581 — Fri, 27 Dec 2024 00:36:44 GMT

I am connected via internet and dish.

my HDMI is connected via ARC.

and the TV is a LGOLED55L46 LS and the Sound Bar is also LG.

this issue has been going on for years, it comes and goes.😩

Re: Lip Sync issues with the Sky Q Box

PandJ2020 — Fri, 27 Dec 2024 08:47:56 GMT

@Chris581 wrote:
I am connected via internet and dish.

Yes, it's Sky Q - they need that.

@Chris581 wrote:
my HDMI is connected via ARC.
and the TV is a LGOLED55L46 LS and the Sound Bar is also LG.

A little more detail would help... Is the Q connected to another HDMI on the TV or does it passthrough the sound bar?

Re: Lip Sync issues with the Sky Q Box

cuke — Fri, 27 Dec 2024 10:19:39 GMT

@Chris581 wrote:
I am connected via internet and dish.
my HDMI is connected via ARC.
and the TV is a LGOLED55L46 LS and the Sound Bar is also LG.
this issue has been going on for years, it comes and goes.😩

Try pcm or passthrough in your tv audio settings and make sure eARC is turned on and the soundbar is connected to hdmi port 3.

Re: Lip Sync issues with the Sky Q Box

Chris581 — Sat, 11 Jan 2025 06:52:23 GMT

Is anybody with a Sky q box having trouble with Lip Sync issues

Re: Lip Sync issues with the Sky Q Box

Chodley — Sat, 11 Jan 2025 08:30:46 GMT

@Chris581 wrote:
Is anybody with a Sky q box having trouble with Lip Sync issues

Nope

hdmi from sky box to yamaha amp. Another Hdmi from yamaha (eARC port) to Panasonic TV (eARC port)

so of course it doesn't use eARC for transferring the sky audio signal but all works fine. No lipsync issues.

have you tried changing any audio settings on the TV as per the suggestions above?

is the sound ahead of or behind the picture?

Re: Lip Sync issues with the Sky Q Box

Chris581 — Sun, 12 Jan 2025 00:06:03 GMT

I only asked because I've just discovered if you put a audio cable in between the Sky Box and sound bar or Sky box and tv, but still leave the HDMI cable connected, and then in the Sky Box menu turn off the HDMI Dolby and turn on the Audio out Dolby it sorts out the lip sync issue.

Re: Lip Sync issues with the Sky Q Box

Chris581 — Sun, 12 Jan 2025 00:23:54 GMT

After writing about an answer to the lip sync issue 20 minutes ago I'm now not so sure it's the answer, might be back to the drawing board.

Re: Lip Sync issues with the Sky Q Box

Chris581 — Sun, 12 Jan 2025 00:26:13 GMT

Just to note I am just a Sky customer 👍

Re: Lip Sync issues with the Sky Q Box

richard+payton — Sat, 28 Feb 2026 12:37:43 GMT

Look at your cable. I had this issue with a High Speed HDMI, this has insufficient bandwidth for 4k 2160p 10bit. Upgraded to an Ultra High Speed HDMI and issue sorted.

My LG tv is 4k 120hz OLED

Re: Lip Sync issues with the Sky Q Box

Chodley — Sat, 28 Feb 2026 17:41:32 GMT

@richard+payton wrote:
Look at your cable. I had this issue with a High Speed HDMI, this has insufficient bandwidth for 4k 2160p 10bit. Upgraded to an Ultra High Speed HDMI and issue sorted.

My LG tv is 4k 120hz OLED

That's odd. Why would a lack of bandwidth cause a lipsync issue? And what is "high speed HDMI"? HDMI 2.0 certified cables which is 18Gbps is more than enough for the res you mentioned plus audio.

Re: Lip Sync issues with the Sky Q Box

richard+payton — Sun, 01 Mar 2026 00:10:12 GMT

I did not have a Premium High Speed HDMI cable which is as you say certified to 18gbps so have not tested this. High Dpeed HDMI is rated to 10.2Gbps which is exceeded when 2160p 10 bit is selected on a 4k screen according to the organisation that certifies HDMI.

When I started having the issue following the purvhase of a new TV LG stated that the sound was being processed before the picture was finished being processed hence the sync issue.

Using the App on the TV rather than the Sky Q box also solved the issue for me.

Replacing the cable as discribed above worked for me as well not just for the lip sync issue but also for out of step subtitles and washed out colour on Apple TV (Netflux, Prime, Paramount etc were all fine for colour but not for lip sync)

Re: Lip Sync issues with the Sky Q Box

richard+payton — Sun, 01 Mar 2026 00:13:46 GMT

https://www.hdmi.org/resource/cables

Try reading this as a starting point.

Re: Lip Sync issues with the Sky Q Box

Chodley — Sun, 01 Mar 2026 00:19:02 GMT

That doesn't explain why it would cause lipsync issues though. Seems an odd symptom if the cable just can't carry a clean signal at that bitrate.

Re: Lip Sync issues with the Sky Q Box

richard+payton — Sun, 01 Mar 2026 00:25:19 GMT

Dont know what to tell you then other than it worked for me and has been rock solid since. Cost about £10.

Re: Lip Sync issues with the Sky Q Box

Chodley — Sun, 01 Mar 2026 00:41:06 GMT

Maybe losing some kind of signalling data that's used to align the audio and video, on the "bad" cable. Interesting.

Re: Lip Sync issues with the Sky Q Box

richard+payton — Sun, 01 Mar 2026 09:51:32 GMT

Tried several High Speed HDMI cables 10.2gbps all the same.

Re: Lip Sync issues with the Sky Q Box

Chodley — Sun, 01 Mar 2026 15:55:49 GMT

@richard+payton wrote:
Tried several High Speed HDMI cables 10.2gbps all the same.

I meant bad as in "not doing the job", not a specific cable.

Clearly any 10Gb cable is not certified to carry UHD @ 10bit

I was speculating about the surprising (to me) symptom.