I think he means when you play a Bluray on the Xbox One (and I'd be very interested to hear this as well). 24Hz through the device that's being passed through is not supported.
I would assume when watching a Bluray on the Xbox One and then opening Snap, that everything stays at 24Hz. However if you go "Xbox Home" - then it would switch back to its default 60Hz. Switching back and between video modes is highly annoying because it usually causes a blackout and a audio cut-off momentarely as the two devices synchronize signals and handshake. It also highlights the inherent problems when dealing with various devices and signals - something where there is no optimal solution unless we suddenly have 600Hz capable sets and hardware (everything divisible by 24/25/30/60).
I would assume when watching a Bluray on the Xbox One and then opening Snap, that everything stays at 24Hz. However if you go "Xbox Home" - then it would switch back to its default 60Hz. Switching back and between video modes is highly annoying because it usually causes a blackout and a audio cut-off momentarely as the two devices synchronize signals and handshake. It also highlights the inherent problems when dealing with various devices and signals - something where there is no optimal solution unless we suddenly have 600Hz capable sets and hardware (everything divisible by 24/25/30/60).