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I would like to hold my phone upright in portrait orientation, but for the video to be recording in landscape. Is this possible? It looks like the camera module is a square and could be rotated but the wires might be too short. There are apps which attempt to do this with software but unfortunately they only crop the video, not true landscape mode.
it depends on how the camera is sited in the, by the shape of it i think it would be quite a difficult task, Samsung Galaxy S8 Plus Rear Camera Bezel Replacement