Every single image I recompress ends up being exactly 20 bytes too large

[Niedzwiedzw]

example from logs: (sorry if I pasted too much)

reason:size mismatch (expected [174904 bytes], found [174924 bytes])
reason:size mismatch (expected [174904 bytes], found [174924 bytes])
reason:size mismatch (expected [349680 bytes], found [349700 bytes])
reason:size mismatch (expected [174904 bytes], found [174924 bytes])
reason:size mismatch (expected [174904 bytes], found [174924 bytes])
reason:size mismatch (expected [174904 bytes], found [174924 bytes])
reason:size mismatch (expected [174904 bytes], found [174924 bytes])
reason:size mismatch (expected [87536 bytes], found [87556 bytes])
reason:size mismatch (expected [174904 bytes], found [174924 bytes])
reason:size mismatch (expected [174904 bytes], found [174924 bytes])
reason:size mismatch (expected [349680 bytes], found [349700 bytes])
reason:size mismatch (expected [1398256 bytes], found [1398276 bytes])
reason:size mismatch (expected [349680 bytes], found [349700 bytes])
reason:size mismatch (expected [1398256 bytes], found [1398276 bytes])
reason:size mismatch (expected [349680 bytes], found [349700 bytes])
reason:size mismatch (expected [174904 bytes], found [174924 bytes])
reason:size mismatch (expected [65660 bytes], found [65680 bytes])
reason:size mismatch (expected [65660 bytes], found [65680 bytes])
reason:size mismatch (expected [5592552 bytes], found [5592572 bytes])
reason:size mismatch (expected [11184976 bytes], found [11184996 bytes])
reason:size mismatch (expected [2796368 bytes], found [2796388 bytes])
reason:size mismatch (expected [5592552 bytes], found [5592572 bytes])
reason:size mismatch (expected [1398248 bytes], found [1398268 bytes])
reason:size mismatch (expected [1398248 bytes], found [1398268 bytes])
reason:size mismatch (expected [1398248 bytes], found [1398268 bytes])
reason:size mismatch (expected [2796368 bytes], found [2796388 bytes])
reason:size mismatch (expected [5592552 bytes], found [5592572 bytes])
reason:size mismatch (expected [1398248 bytes], found [1398268 bytes])
reason:size mismatch (expected [1398248 bytes], found [1398268 bytes])
reason:size mismatch (expected [1398248 bytes], found [1398268 bytes])
reason:size mismatch (expected [2796368 bytes], found [2796388 bytes])
reason:size mismatch (expected [2796368 bytes], found [2796388 bytes])
reason:size mismatch (expected [1398256 bytes], found [1398276 bytes])
reason:size mismatch (expected [1957088 bytes], found [1957108 bytes])
reason:size mismatch (expected [2025944 bytes], found [2025964 bytes])
reason:size mismatch (expected [2025944 bytes], found [2025964 bytes])
reason:size mismatch (expected [3566432 bytes], found [3566452 bytes])
reason:size mismatch (expected [3008556 bytes], found [3008576 bytes])
reason:size mismatch (expected [2427100 bytes], found [2427120 bytes])
reason:size mismatch (expected [1957088 bytes], found [1957108 bytes])
reason:size mismatch (expected [4009700 bytes], found [4009720 bytes])
reason:size mismatch (expected [2343784 bytes], found [2343804 bytes])
reason:size mismatch (expected [2796344 bytes], found [2796364 bytes])
reason:size mismatch (expected [1398248 bytes], found [1398268 bytes])
reason:size mismatch (expected [2796344 bytes], found [2796364 bytes])
reason:size mismatch (expected [1398248 bytes], found [1398268 bytes])
reason:size mismatch (expected [1398248 bytes], found [1398268 bytes])
reason:size mismatch (expected [2796344 bytes], found [2796364 bytes])
reason:size mismatch (expected [2796344 bytes], found [2796364 bytes])
reason:size mismatch (expected [2796344 bytes], found [2796364 bytes])
reason:size mismatch (expected [2796344 bytes], found [2796364 bytes])
reason:size mismatch (expected [2796344 bytes], found [2796364 bytes])
reason:size mismatch (expected [2796344 bytes], found [2796364 bytes])
reason:size mismatch (expected [2796344 bytes], found [2796364 bytes])
reason:size mismatch (expected [2796344 bytes], found [2796364 bytes])
reason:size mismatch (expected [2796344 bytes], found [2796364 bytes])
reason:size mismatch (expected [2796344 bytes], found [2796364 bytes])

this actually makes it too big to fit into the bethesda archive, so I wonder what could be the reason for this

here's entire code: https://github.com/Niedzwiedzw/hoolamike/blob/269f555e8707fdbd29e1d57b60ef3e3cc78f38c8/crates/hoolamike/src/install_modlist/directives/transformed_texture/dds_recompression.rs#L8

so idk, just to throw some ideas, maybe an extra very small mipmap is getting generated?

[ScanMountGoat]

You would need to look at the dimensions, mip maps, etc for the textures that have that issue. I don't expect this to be an issue with image_dds itself.