Solving problems with the horizon and vertical video on camera phones

I want to share my idea and maybe a little criticism.

I came up with such an idea, the implementation of which is possible as nothing to do with modern technologies, but it is not very clear why it has not yet been implemented.
Everyone knows the well-known problem with camera phones - when you take them vertically on them, the picture turns out to say the least, not right and long. In general, no good.
You can simply say that people are holding phones correctly, but for me personally it’s more convenient to hold upright - somehow it is more reliable in my hands. The problem should be solved by technical means.

The essence of the idea:
Why can't a simple round matrix be used in cameraphones, from which exactly that data area will be read that corresponds to the chosen format, resolution and the most important (!!) location of the smartphone relative to the horizon? The problem with the horizon is understandably solved with an accelerometer.

Those. no matter how a person holds a smartphone, the picture will always be there with the right horizon and the right format. Naturally, if you wish, you should be able to disable autocorrection, which can also be implemented without any problems. Also for a photo in this way, you can solve the problem with the horizon, still retaining the ability to shoot vertically or horizontally, although square or round photos would solve the problem, but this is somehow not standard.
')
ps. This is just my free idea, which I would like to see realized at least somewhere.