XnView Software

Hello.
I want to process a pack of images with different scales - need to crop and resize to 4:3 scale.
For example, on screenshot: red rectangles - source images, green - desired results.


Initialy I used this command:

nconvert -ratio -resize 0 2000 -canvas 1500 2000 center -i -o dest.jpg source.jpg

It was good for one type of images, but for second - it leaves black lines on a sides of image.

Is there solution to use one line command to deal with both types of scales?
May be canvas longest, resize longest
Have no ideas...

When resizing an image to a particular ratio requires new canvas to be added, the colour of the canvas added is set by the -background option:
When no colour is specified the default value may well be black.

I'm not sure looking quickly whether that is your problem, but you might take a look at that...

Hello,

The -bgcolor and -bgcolor2 doesn't work when i use -keepcspace option. My original picture have a 32bit color depth.

For example :
nconvert -q 85 -ratio -rtype lanczos -rflag orient -keepcspace -resize longest 1000 -bgcolor 255 255 255 -canvas 1000 1000 center -out jpeg -o "C:\TEMP\photo1.JPG" "C:\MEDIATHEQUE\photo.EPS"

The added background get a random color.

Any ideas?
Thanks

You want to keep 32-bit depth, or output a 24-bit image with a selected background color? In the latter case, you could test including a term to set the bit depth to 24-bit.

cday wrote: Wed May 18, 2022 9:54 am You want to keep 32-bit depth, or output a 24-bit image with a selected background color? In the latter case, you could test including a term to set the bit depth to 24-bit.

I need to keep 32-bits depth.

bll06 wrote: Wed May 18, 2022 10:00 am I need to keep 32-bits depth.

You might look at this recent thread for ideas if you haven't already done so.

I don't have much experience with 32-bit, but when I had a quick look at the poster's problem using XnConvert, I also obtained an output file with a green background.

Otherwise you will have to wait for Pierre the developer of NConvert.

and if you use why do you want -bgcolor?

xnview wrote: Thu May 19, 2022 11:07 am and if you use

Code: Select all

nconvert -q 85 -ratio -rtype lanczos -rflag orient -resize longest 1000 -bgcolor 255 255 255 -canvas 1000 1000 center -out jpeg -o "C:\TEMP\photo1.JPG" "C:\MEDIATHEQUE\photo.EPS"

why do you want -bgcolor?

With -keepcspace option i got black (or random color) stripes

could you send me the original file?

xnview wrote: Mon May 23, 2022 11:57 am could you send me the original file?

The original file

ok, the original image is in CMYK, you would like to keep it in CMYK?

xnview wrote: Mon May 23, 2022 2:16 pm ok, the original image is in CMYK, you would like to keep it in CMYK?

Yes, I need to keep the originals colors

ok, i'll fix it....

j'ai le même problème,
nconvert -ratio -rtype lanczos -rflag orient -resize 600 600 -canvas 600 600 center -bgcolor 255 255 255 "C:/PHOTOS/AL23512-PD01.jpg"
le fond est noir

RENEDANSET wrote: Tue Oct 17, 2023 10:06 pm j'ai le même problème,
nconvert -ratio -rtype lanczos -rflag orient -resize 600 600 -canvas 600 600 center -bgcolor 255 255 255 "C:/PHOTOS/AL23512-PD01.jpg"
le fond est noir

il me faudrait votre image