Case in point: the LG OLED B1 series. According to RTINGS , it does have HDMI 2.1 ports, it is "HDMI Forum VRR" certified, but it's variable refresh rate does not go below 40Hz and it doesn't support "low frame rate compensation". How would this TV act for ~24fps content? Does ATV itself do frame doubling to ~48fps when it encounters such a device or does it just switch to "non-seamless" frame rate switching?
Thank you!
EDIT FOR CONTEXT https://medium.com/androiddevelopers/prep-your-tv-app-for-android-12-9a859d9bb967
VRR is geared toward gaming and isn't really part of the video playback side of things.
Videos aren't typically variable frame rates so when Kodi or Plex or whatever tells the display to switch to a new frame rate, it should be the same as the video being played.
Now, some, if not all, TV's now use frame interpolation to multiply the video frames to match the display. My old panny plasma could do 24, 48, and 96 fps. My LG A1 is a 60hz set so it'll do 24 and 60fps if I'm reading rtings right.
Having said all that, what fps are the videos you are trying to play and what app are you using for playback?