Solving problems with the horizon and vertical shooting video on camera phones

    I want to share my idea and maybe get some criticism.

    I came up with such an idea, the implementation of which is possible as there is 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 shoot them vertically, the picture is, to put it mildly, not correct and elongated. In general, worthless.
    You can simply say that people correctly hold the phones, but it’s more convenient for me personally to hold upright - somehow it is more reliable in the hands. IMHO should be solved by technical means.

    The essence of the idea:
    Why it is impossible to make just a circular matrix in camera phones, from which exactly that data area will be read, which corresponds to the selected format, resolution and, most important (!!) the location of the smartphone relative to the horizon? The problem with the horizon is understandably solved with the help of 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 desired, it should be possible to disable auto-correction, which can also be implemented without problems. It is also possible for a photo to solve the problem with the horizon in this way, 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 implemented at least somewhere.

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