Quote:
Originally Posted by Blue_MiSfit
FWIU Profile 5 can reconstruct 12 bit RGB using the 10 bit IPT base layer and the RPU. They do want you to feed in a 12+ bit (ideally 16) when shaping the image into 10 bit IPT.
Ben was also saying before that you actually can do Profile 5 now on UHD-BD (not just 7)
|
Profile 5 cannot be used on BD, if Ben is suggestion it can, he would be mistaken.
The RPU does not contain any extra picture information, it just has the various Ls of information such as frame statistics and trim pass values. It is a pretty small file in binary form. Unfortunately BD does not support IPT either. I wish it did, my content shows noise in some super saturated red's due to non-constant luminance of YCbCr.
The output of the Dolby engine is always 12-bit, the LSBs are all 0 unless you encode 12-bit or you have a full enhancement layer to reconstruct the original 12-bit signal. IPT by itself does not offer any of that.