CR2: 5616 x 3744 left: 168 top: 56
DNG: 5616 x 3744 left: 336 top: 112
CR2's raw resolution is 5792x3804, so trying to crop it according to those values would not be possible - it'd escape the raw dimensions (e.g. 336 + 5616 > 5792).
It's also interesting that DNG's offsets are exactly double of those reported for CR2.
Another issue I came across is that the cropped dimension offsets are different between a CR2 image and a corresponding DNG.
CR2: https://github.com/letmaik/rawpy/blob/main/test/RAW_CANON_5DMARK2_PREPRO... and a DNG is obtained by using Adobe DNG Converter (17.1.0).
CR2:
5616 x 3744 left: 168 top: 56DNG:
5616 x 3744 left: 336 top: 112CR2's raw resolution is 5792x3804, so trying to crop it according to those values would not be possible - it'd escape the raw dimensions (e.g. 336 + 5616 > 5792).
It's also interesting that DNG's offsets are exactly double of those reported for CR2.
I found a note here https://www.libraw.org/news/libraw-202110-snapshot that this might be expected, but wanted to flag it anyway in case it'd offer you some additional clues.