Instead of artificially upscaling the 1056x704 LiveView buffer to 1920x1080, it makes more sense to just record the native sensor resolution to SD Card & do all upscaling in post.
At less than half the resolution of 1080P, recording in the "native video resolution" would enable us to record for twice as long or twice the bit-rate.
At less than half the resolution of 1080P, recording in the "native video resolution" would enable us to record for twice as long or twice the bit-rate.