I have recently swapped an old 5.1 system out with the Sonos Arc. The 5.1 system had all components connected into the A/V receiver with one HDMI from the receiver to the TV (Sony Bravia KD49XE8005) and had absolutely no lip sync problems.
I’ve now set up the Arc (via ARC) and, I thought, everything was still fine. I had no lip sync issues on apple TV, PS4 and some Sky content. Sonos Arc is connected via ARC (HDMI 3 in my TV’s case) with the Apple TV, PS4 and Sky Q box connected via other HDMI inputs.
However, I have identified a very specific issue with Sky Q. When watching stereo content (i.e. non HD) I have no lip sync issues. When watching UHD Atmos content (output via DD+), there are no lip sync issues. However, when Sky Q outputs DD5.1 the audio and video go out of sync in the way that can’t be fixed (i.e. video is ahead of the audio).
I have tried a power cycle and the issue still persists. Additionally, when I set the Sky Q HDMI output to normal and it outputs in stereo the audio and video are in sync.
I really want to find a solution to this because the Arc sounds great and Atmos content is brilliant, but lip sync issues for what is likely to be the vast majority of my TV watching is a bit of a deal breaker!
Thanks for your help!
Best answer by RussHill919
I have the exact same issue with my recently purchased Philips OLED854. The Same set up with my previous Samsung Tv did not exhibit the problem at all. My only solution is to change the skyQ sound output to “normal” which kinda defeats the purpose of having a Dolby digital/Atmos sound bar. Logic suggests it has something to do with the way the tv is processing the Dolby digital signal which adds a delay. As the sound is behind the picture there are no adjustments via the tv, skyQ or the Arc that can help.
I feel your pain :(
After a ridiculous amount of research and a visit from the sky engineer, there’s nothing that fixes it. It seems to be something to do with the DD signal from Sky Q, it’s a pretty well documented problem! I even looked at returning the Arc and getting a different soundbar with multiple HDMI inputs so I can plug loads of devices directly in, but there doesn’t seem to be anything that does that and has good reviews.
What does work is plugging directly into the Arc via optical. So for now, I’ve resigned myself to an optical signal with a switch to plug everything into. There is a HDMI product called the Arcana from HDFury that will resolve the problem and allow full Atmos signals but is not available until October.