Originally Posted by Andrew Stirling
The thing is we’re dealing with so many different combinations of hardware that it’s not easy to say where the issue is and it’s going to be a nightmare to reproduce.
Take my situation for example. I had zero lip sync issues when passing my audio through a Yamaha 3050. When I upgraded to my 3070, I need to set different delays when switching between 23.976hz material and 25hz material. Why the difference? I have no idea. It would be easy to criticise the amp but everything passes through it and I have zero lip sync issues with other devices. The main feature difference between the two amps is that the newer one supports Dolby Vision. Could this be the issue? And if so, why does it also consistently affect non-Dolby vision content?
Add to this, my harmony failed to correctly switch inputs on my tv once when switching between my Xbox and my Apple TV. I noticed that my lip sync issues disappeared at this point. I probably need to check this out further because it could be due to a range of reasons. My Xbox runs through a different hdmi output on my amp to a different input on my tv...and that channel on my tv has game mode enabled. So it could be that using the second output on my amp fixed lip sync, it could be that using the different input on my tv fixed lip sync or, more likely, it could be that the lower latency game mode on my tv fixed it.
So for people who are not having issues, there could be a ton of things you have set up differently. Maybe you’re using a lower latency picture mode. Maybe your tv doesn’t introduce processing delays when using 23.976hz content and mine does. Even if you have the same TV and picture mode, it could be that I have real cinema set to ‘on’ on my tv whereas you have it off. Maybe you use motion interpolation. People are consistently finding that the Apple TV is the only device in their system which is having difficulties though so it suggests that there is something worth looking into.
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Yup, so many variables. Is it the cables, inputs, settings, equipment, etc........?
Man cave-Marantz 8012, Oppo 203, 4K ATV, Sony XBR-75X940E, Bluesound Vault 2, Harmony One, 2 Paradigm Monitor 9's, CC-390, 2ADP 390's/190's, 2 PDR 100's,
4 SVS Prime elevations. B&W P5. Living room- Yamaha 2010, Bluesound Node 2, Paradigm SE-1's, Zone 2-Paradigm-Stylus 370-SM
Bedroom- Samsung UN60ES7100F, Oppo 103D, Pulse Mini, JBL Bar Studio, ATV3 and Harmony 650