[mythtv-users] 4k on Android

[mythtv]

On my linux desktop, I see that it seems to be playing back at 4k
resolution:

2020-10-09 13:14:25.570360 I  VideoWin: Window using screen DP-0 3840x2160
2020-10-09 13:14:25.570366 I  VideoWin: Window Rect:  3840x2160+0+0
2020-10-09 13:14:25.570370 I  VideoWin: Display Rect: 3840x1600+0+280
Aspect: 1.77778
2020-10-09 13:14:25.570373 I  VideoWin: Video Rect:   3840x1600+0+0
Aspect: 2.4


But on android (FireStick 4k), it seems to only be HD:

2020-10-09 14:31:01.314 7940-7964/org.mythtv.mythfrontend I/mfe:
videooutwindow.cpp:102:PopulateGeometry  VideoWin: Window using screen
1920x1080
2020-10-09 14:31:01.315 7940-7964/org.mythtv.mythfrontend I/mfe:
videooutwindow.cpp:486:PrintMoveResizeDebug  VideoWin: Window Rect:
1920x1080+0+0
2020-10-09 14:31:01.316 7940-7964/org.mythtv.mythfrontend I/mfe:
videooutwindow.cpp:490:PrintMoveResizeDebug  VideoWin: Display Rect:
1920x800+0+140 Aspect: 1.77778
2020-10-09 14:31:01.317 7940-7964/org.mythtv.mythfrontend I/mfe:
videooutwindow.cpp:494:PrintMoveResizeDebug  VideoWin: Video Rect:
3840x1600+0+0 Aspect: 2.4


Is this expected? Or do I not have something configured correctly? I
know the wiki said 4k wasn't possible but it also seems like part of
that page is out of date.