| 3 | | BTW, looks like gAMA is not exported. Why??? Also it is '''not''' mastering display metadata. It is actually alá ICC profile, except it is in D65 adapted in 2° observer, not D50 adapted 2° observer like in ICC! (ICCv5 MAX of course added any adaptation you want with any observer you wanna even the super crazy modern one.) Also if iCCP chunk with ICC profile or sRGB chunk of any rendering intent are present, it overwrites cHRM. Because well, sRGB IS NOT 2.2 gamma. It is piecewise and in ICCv2 you need to use 1DLUT, while ICCv4 you can use parametric curve encoding. But you can simply use sRGB chuck. Yeah. |
| | 3 | BTW, looks like gAMA is exported, nice! Also it is '''not''' mastering display metadata. https://github.com/FFmpeg/FFmpeg/commit/8e4390de48b22cf6dd2307f0c29a3fef7016ef4c#diff-a3bda6216522f5daa7cbc2a5a3b2a3dd261df44c49a6a3f4939028b8aa76a319R36 It is actually alá ICC profile, except it is in D65 adapted in 2° observer, not D50 adapted 2° observer like in ICC! (ICCv5 MAX of course added any adaptation you want with any observer you wanna even the super crazy modern one.) Also if iCCP chunk with ICC profile or sRGB chunk of any rendering intent are present, it overwrites cHRM. Because well, sRGB IS NOT 2.2 gamma. It is piecewise and in ICCv2 you need to use 1DLUT, while ICCv4 you can use parametric curve encoding. But you can simply use sRGB chuck. Yeah. |
