Probably an old question, but since I am new to this list I just post it.
How do I batch process files in gimp and resize the images while keeping
the aspect ratio of the original file. I modified the batch processing
example on the Gimp web pages, but it just doesn't work.
I have included the modified script below. As you can see I try to
resize the images to a maximum size of 1920x1200px.
(define (batch-unsharp-mask pattern
(let* ((filelist (cadr (file-glob pattern 1))))
(while (not (null? filelist))
(let* ((filename (car filelist))
(image (car (gimp-file-load RUN-NONINTERACTIVE
(drawable (car (gimp-image-get-active-layer image)))
(width (car(gimp-image-width image)))
(height (car(gimp-image-height image)))
(scale min( (/ 1920 width) (/ 1200 height)))
(xsize (* scale width))
(ysize (* scale height)))
image drawable radius amount threshold)
(gimp-image-scale image (floor xsize) (floor ysize))
image drawable filename filename)
(set! filelist (cdr filelist)))))
Kind regards / Vriendelijke groeten,
Eric van Oorschot
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