How do you encode ProRes with 10 bits per channel in Adobe Media Encoder? In the video settings for all the ProRes 422 flavors, it gives the choice of either 24 or 48 bits. ProRes does not support 48 bit depth, so is that a bug? According to Apple's white paper, ProRes 422 supports 8 and 10 bits per channel.
When I do test encodes of ProRes 422 HQ with both 24 and 48 bit depths, the outputs are identical. It seems that the 48 bit option should be removed, and a 30 bit option added.
When using ProRes 444, the options are equally confusing. it gives options for 24, 32, 48, and 64. ProRes 444 supports maximum 12 bits per channel, and 16 bits for the alpha channel, so both "48 bit" and "64 bit" are misnomers. Could someone from Adobe please explain what is actually happening when you use these options? I'm guesing the 64 bit setting encodes 12 bits per channel plus 16 bits for the alpha, but I don't know.