Resolution too low on iOS

[Z6P0]

I tested on iPhone 12 mini and the resolution is only 374x812. How can it be improved please?
The videos captured by the system are 886x1920 and the screen resolution is 1080×2340.
(N.B. Couldn't make it work on simulator.)

[zafar427]

May I ask if you have solved it

[Z6P0]

No, I dropped this package and developed my own screen recording.