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Reproducable LOSSY 48 bit J2K: jpeg2000 of ffmpeg vs Kakadu

2

So I learnt that lossy JPEG 2000 is not garanteed to be decoded the same way, since that is what ISO/IEC 15444-4 | Rec. ITU-T T.803 (J2K conformance testing) says....

Some samples: [jpeg ](https://github.com/mozilla/mozjpeg/issues/31#issue-30015839) (Coated FOGRA39 (ISO 12647-2:2004)) https://upload.wikimedia.org/wikipedia/en/2/25/Channel_digital_image_CMYK_color.jpg (U.S. Web Coated (SWOP) v2) https://newsgroup.xnview.com/download/file.php?id=2449 (Europe ISO Coated FOGRA27)