hideSystemUi is a helper method called in onResume, which allows you to have a full-screen experience.

HideSystemUI.kt

@SuppressLint("InlinedApi")
private fun hideSystemUi() {
    WindowCompat.setDecorFitsSystemWindows(window, false)
    WindowInsetsControllerCompat(window, viewBinding.videoView).let { controller ->
        controller.hide(WindowInsetsCompat.Type.systemBars())
        controller.systemBarsBehavior = WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE
    }
}