If you use an external HDMI media player with frame rate matching you may have noticed that your TV goes black for a second or two before and after video playback. QMS is here to solve it. QMS (Quick Media Switching) is designed to eliminate the 'HDMI bonk' (blackout) in specific instances. It is an optional feature under HDMI 2.1a, meaning that HDMI 2.1a devices can support it or not – it is up to the manufacturer. QMS was originally announced as part of HDMI 2.1 a few years ago but never made it into any TV products until it was revised under HDMI 2.1a. - "Quick Media Switching for movies and video uses the HDMI VRR mechanism to eliminate the blackout period when an HDMI Source device switches its video mode. As long as the resolution remains the same and only the frame rate changes, QMS will instantly switch between frame rates," the HDMI organization explained.
QMS in TVs and media playersBoth the source device and the TV must support QMS to make it work. The player (source) must also have a match frame rate function to make it feasible in practice. Apple TV 4K (2022) is the first media player to support QMS. LG is the first TV maker to have announced support and it will be supported in 2023 OLED and some 2023 LCD models. See the next section. At the time of writing, no other TV makers have announced support but here is what some of them had to say when asked by FlatpanelsHD. Sony: - "QMS VRR will not be supported. The future plan is TBD. Sony will announce if something decided." Philips: - "No, but we have included in the scope for the (near) future." LG: - "At this time we are not announcing any plans to support QMS in older TVs." Samsung: Samsung has not commented publicly on the matter but some of its 2023 models identify as QMS compatible to Apple TV 4K (2022). However, it does not work so it could be an error. TCL: TCL will unveil its 2023 TV line-up next month and, naturally, we'll be on the case.
TVs with HDMI 2.1 QMSThe list below pulls data from FlatpanelsHD's TV Database and will be automatically updated as new TVs with QMS launch. You can bookmark the list for future reference. Click on any TV model to get more information in the TV Database where you can also compare models.
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