I never had this sound delay / lip sync problem with my TV speakers until I moved to 360. It’s interesting that the 360 menu offers a lip sync timing adjustment / delay feature, did they know there was an issue when the built it? I still have the problem from time to time when I change channels or return to live TV and have to turn the 360 box off and on again to get in sync. Just another 360 shortcoming.
So I am just about to upgrade my V6 box to 360, primarily as I've been told that this will enable me to get dolby arc output from Netflix and Amazon Prime. Currently my V6 box doesn't provide this output, but my LG TV does and I can get arc via both Netflix and Amazon Apps. So not sure if upgrading to 360 might be a backward step. I also do not have any sync problems, V6 box HDMI to LG TV, LG TV e-arc out to Sonos arc soundbar. I am quite worried now, after reading of all the picture and sound issues with 360 as to upgrade 🙂
I don't want to cause a backlash with people still suffering, but as a person that has previously posted in this thread with the same awful sync problem it is now resolved for me.
Am purely posting for the benefit of other people using the same kit (Casbar from a couple of messages ago) in case it is just kit related (and the makers of that have resolved any problems they had with audio sync with their software updates - reading elsewhere it's common, especially with Sonos and indeed the LG C1).
LG OLED 65 C1 TV Sonos Arc soundbar (with x2 Sonos One's as rears) HDMI 2.1 leads connect between the above via eARC on the TV (these 2.1 rather than standard leads could be important)
Thanks, that is good to know. I have an LG 48CX, so not a C1. But do have a Sonos arc. There has been several posts about picture quality as well with the 360, currently I have a good picture and my upgrade was purely so I could get dolby arc from the app on my V6 box.
I don't understand how a signal can be in sync 369 hdmi into amp into TV. But out of sync, 360 hdmi into TV and then ARC into soundbar.*
One thought is that included on the metadata in the HDMI signal there might be lipsync data. Has anyone tried turning off hdmi CEC to disable that? Try first on the 360 box, then TV, then soundbar.
*Actually I can understand and it might not be a popular opinion..
It suggests an issue with the TV picture and TV passthrough. Mention of LG lots makes me think it's something going on with the LG. I have LG E6 and in that model I can say there is definite issues with the audio output via the ARC channel, as follows:
Before I got my Shield to send Amazon and Netflix etc from there initial amp and then TV I was using ARC for getting audio from the Amazon and Netflix apps on TV. I had horrible lipsync issues, the TV audio processing introduced very audible lag too the audio that the small amount of advance/lead adjustment on the TV couldn't fix. And of course because the audio is the one delayed no delay setting on there amp would help.
It was the reason for me getting the Amazon fire, and then the Shield in the first place.
Turning off the lipsync adjustment in the TV and enabling TV picture processing to slow down the picture helped.