On 25-06-09 16:05:54, Ralf Mardorf wrote:
Neither imagemagick nor ffmpeg do work for me.
ah, I didn't realize is such massive image, if you want to convert it to PNG I would use openjpeg2 $ opj_decompress -i PSP_003434_1755_COLOR.JP2 -o output.png It does take long time and created ~845M png /usr/bin/opj_decompress is owned by openjpeg2 2.5.3-1 ------------------------------------------------------------------------------ I was able to get normal jpg out of it as well, it's resized and small with $ gm convert PSP_003434_1755_COLOR.JP2 -resize 10% output.jpg /usr/bin/gm is owned by graphicsmagick 1.3.45-4 ------------------------------------------------------------------------------ you could also create tiles out of the big image $ vips dzsave PSP_003434_1755_COLOR.JP2 output --layout=google --tile-size=512 --overlap=0 --depth=onetile /usr/bin/vips is owned by libvips 8.16.1-2 ------------------------------------------------------------------------------ I am not sure if these work for your usecase, opening the image as is did seem to slurp 22.5G ram and took awhile but it was possible with gimp, couldn't find quick and good viewer for it though because of the resolution/size