Doing 4 : 2 : 0 video recording using the built-in iPhone or iPad camera is not a problem, but how does one get 4:2:2, 4:4:4, RGB or RAW video access? Using the still camera mode for this is way too slow.
Yes, the integrated HW encoder may not handle those modes but the SoCs now are fast enough for full HD and even 4K software encoding using the ARM and cores and the GPU to handle 4K60 @ 4:2:2 10bit and better. Even burst recordings of uncompressed would be very interesting.
But how is this done. Tried all. Failed. Help, please!