Is it possible to avoid re-compression of a JPG image when setting metadata and dpi and maintain a somewhat original filesize?
Since it seems I cannot add dpi with the same command I am setting metadata with, I have two commands that I execute:
#1 Setting IPTC
Code: Select all
.../nconvert_6.50_win64/nconvert.exe -v -overwrite -iptc_clear 25 -iptc_add 25 "keyword 1" -iptc_add 25 "keyword 2" -iptc_set 105 "headline title" -iptc_set 115 "asset name" -iptc_set 90 "city name" image.jpgCode: Select all
.../nconvert_6.50_win64/nconvert.exe -v -overwrite -dpi 300 image.jpgAfter having executed the first command, which sets a lot of IPTC, the image colors are every so slightly changed.
But after having performed the second command, which sets the DPI, the image colors are heavily changed.
I am rendering the original JPG out of The Foundry's Nuke, and with a 4:4:4 sub-sampling setting. I have attached a screenshot, where you should be able to see a little difference between left/right of the crosshair. The right hand side is the original image with colors untouched. On the left hand side is the image which has had command #1 and #2 applied. On my calibrated monitor, the discrepancy is greater than in that screenshot.
Please let me know if there is anything I can do set IPTC and DPI without touching the colors and maintaining a somewhat original file size.
Regards,
Fredrik
