| 1 | 1 | Yep, fixed. Just for posterity "While it's pointless to extract the luma plane from a frame that only has a luma plane" is false. The whole point of extractplanes is to extract the bits as they are in the source format. That means that YCbCr (or Y only) conversion to R'G'B' does not happen. Yes, it so happens that (limited) Y only grayscale can be presented as (again, limited) R = G = B = Y, but that may be not the case in ICtCp or if color managment happens. And it is not the case in full range Y and full range R'G'B' (ffmpeg only supports full range R'G'B' anyway). Also, the Paul's code preserves superblack and superwhite for limited range and allows to analyse out-of-R'G'B'-gamut stuff for full range YCbCr. |
