Cannot crop incomplete file (lossless JPEG mode)

[royjor2016]

example: https://commons.wikimedia.org/wiki/File:Zentrale_Lotto_Rheinland-Pfalz.jpg

[Error] Command "/data/project/croptool/jpeg-9a/jpegtran -copy all -crop '3992x2475+0+0' '/mnt/nfs/labstore-secondary-tools-project/croptool/public_html/files/1b596d50a7942ce8de970db3087dee40c1e2bb33.jpg' > '/mnt/nfs/labstore-secondary-tools-project/croptool/public_html/files/1b596d50a7942ce8de970db3087dee40c1e2bb33_cropped.jpg' 2>&1" exited with code 2: 2

[danmichaelo]

Hm, I couldn't find an option to make jpegtran ignore errors, so lossless cropping might not be possible.

Did you try precise mode? Think that might work.

[danmichaelo]

Same as #131

[royjor2016]

Yes it works in Precise Mode. I've actually cropped incomplete ones before. I must have done it in precise too but I forgot. Still, is it possible to perform a lossless crop?

[danmichaelo]

Perhaps, but not to my knowledge.

[Jeff-Gdot]

Cropping https://commons.wikimedia.org/wiki/File:2019_Virginia_Avenue_train_tunnel_entrance.jpg worked in precise mode, perhaps you could generate a more user-friendly message when the user is trying to losslessly crop an incomplete file?

[danmichaelo]

Yeah, I also thought about that, the error message could definitely be improved. Perhaps something like "Precise crop failed for incomplete or invalid JPG file, please try precises mode."