Still not able to connect my Sony Bravia from 2017 with my Naim Unity without lipsync issues.
Would really like to have the sound through my Focal speakers but sound is very offsync. Even optical doesn’t help, hdmi neither.
Also, the updated naim software on the app doesn’t seem to have the ability to delay or correct timing for offsync. At least I can’t find it.
I see a picture somewhere on the naim theater app, but that’s not what I see when I use the naim app on my device.
If there’s a big offset, there is a good chance that the synchronization is lost in the TV or any source connected to it. There may be different settings for the TV to make it behave more “real-time”, sometimes modes intended for PC or gaming usage can help. (May be worth to investigate.)
The Naim units should not add much delay, and they will never be able to pull audio “ahead” of the time it’s leaving the TV. The only thing you can do (if sound is too early for the pictures) is to delay the signal inside the Uniti.
This can be configured via the app via:
Settings → System Settings → Input Settings → per each individual input → Lip Sync
I use a Sony Bravia with Apple TV (HDMI) via optical to the 222 and no issues. Used the 272 before that with no issues. I did observe the lip sync problem when I had multi-room engaged when switching over to the optical input. No issues otherwise.
If you have multiple units, such as a Muso to which you “multi-room”, be sure to turn OFF multi-room on your Unity before trying to play TV audio or else you will have very bad lip-sync.
Similar to @ElMarko I use Apple tv into admittedly LG tv via HDMI, then optic to either Nova or ND555.
No issues whatsoever and interestingly there is no adjustment available on the Apple tv box.
There is an adjustment on the LG tv, which despite a brief check, wasn’t needed.
Lip sync in my av system, in another room, with other sources, does require adjustment.
Might be worth a web search for the particular tv model, to see if any issues have been subject to a comment. If that doesn’t reveal any info, then Apple tv may be worth a trial. The source is the key to lip sync, unless in a full av system with a processor, rather than the audio replay unit.
There is, iirc, quite a number of threads on HDMI issues here, which can be summarised, based on a Naim member of staff post, that HDMI standards are widely drawn, such that manufacturers may not adhere very rigidly to the specs, resulting in various issues.
Indeed as most have said, I totally agree lip sync issues are almost certainly down to the source. Further the AV sync issues can be dynamic. Although sent video often contain presentation time stamps to keep video and audio in sync, depending on the amount of video DSP you have enabled on your digital TV screen, the added sometimes variable delay can make lip sync noticeable. The consumer industry generally considers 45 mS lead and 125mS acceptable for average quality content. For films it is considered less then 25mS in each direction.
There are TV / display presentation standards such SMPTE 2064, published around 2015 that are designed to keep audio and video presentation in sync, adjusting for video DSP. I don’t know to what extent this is adopted in TVs, perhaps only the high end models.
I guess one work around is to switch as much video DSP off as possible (I think that generally looks better anyway) and use the TV AV adjuster, which quality TVs will provide. You might find the video presentation varies per source input on the TV giving the appearance one is better than the other… if so try and match the video DSP of the best input to all inputs.
This is the method I adopt with my LG TV and generally works well.
→ System Settings → Input Settings → per each individual input → Lip Sync