batch resizing with gwenview

[Primm]

If I batch resize a series of jpg's in gwenview or similar engine, the top bit
of it appears of at the bottom. Has anyone encountered similar effects? Could
anyone reproduce downloading Nikon D 50 images and then resizing to a similar
effect?

O sea ¿Hay métodos alternativas hacer el mismo?

Cheers from Steve.

Alicante, Spain.

[Bruce Marshall]

Post by Primm
If I batch resize a series of jpg's in gwenview or similar engine, the top
bit of it appears of at the bottom. Has anyone encountered similar effects?
Could anyone reproduce downloading Nikon D 50 images and then resizing to a
similar effect?

Well, I'd like to help you out but I can't get Gwenview past the point of
wanting a writable path for my files... Even though I specified one in the
settings.

I've never used gwenview but use convert from Imagmagik instead. I use a D70
and have never seen the problem you claim.

Try: convert -geometry 640x480 -quality 75 input.jpg output.jpg

and see how that works.

[Patrick Shanahan]

Post by Primm
If I batch resize a series of jpg's in gwenview or similar engine,
the top bit of it appears of at the bottom. Has anyone encountered
similar effects? Could anyone reproduce downloading Nikon D 50 images
and then resizing to a similar effect?

As Bruce said, I find ImageMagick much better for batch work. Try the
command line he gave.

ps: works fine for my D70 and D200.

[Bruce Marshall]

Post by Patrick Shanahan

Post by Primm
If I batch resize a series of jpg's in gwenview or similar engine,
the top bit of it appears of at the bottom. Has anyone encountered
similar effects? Could anyone reproduce downloading Nikon D 50 images
and then resizing to a similar effect?

As Bruce said, I find ImageMagick much better for batch work. Try the
command line he gave.
ps: works fine for my D70 and D200.

BTW, I did finally get gwenview to do the batchy resize and the resulting JPG
files had absolutely nothing for a picture! Totally white. I would not use
that program.

[Kenneth Schneider]

Post by Bruce Marshall

Post by Primm
If I batch resize a series of jpg's in gwenview or similar engine, the top
bit of it appears of at the bottom. Has anyone encountered similar effects?
Could anyone reproduce downloading Nikon D 50 images and then resizing to a
similar effect?

Well, I'd like to help you out but I can't get Gwenview past the point of
wanting a writable path for my files... Even though I specified one in the
settings.
I've never used gwenview but use convert from Imagmagik instead. I use a D70
and have never seen the problem you claim.
Try: convert -geometry 640x480 -quality 75 input.jpg output.jpg
and see how that works.

I use the following all on one line:

for I in `ls -1 *.JPG`;do convert -resize 640x480 ${I} ${I};echo
${I};done

It does overwrite the originals but I only work on copies anyway.

[Michael Skiba]

Post by Kenneth Schneider
for I in `ls -1 *.JPG`;do convert -resize 640x480 ${I} ${I};echo
${I};done
It does overwrite the originals but I only work on copies anyway.

when you overwrite the file anyway why don't you use mogrify?
It overwrites the file by default, so you could use it in shell, without a
script :)

just:
mogrify -resize 640x480 <filename(or something like *.JPG etc.)>

--
Michael Skiba
GPG-Fingerprint: E9FA 4663 4A31 5D4C 8BCD 813B 707C 1B5B FCE5 399A
[no guaranty for correct GPG-Fingerprints in mails which are signed with the
key itself..]

[Basil Chupin]

Post by Bruce Marshall

Post by Primm
If I batch resize a series of jpg's in gwenview or similar engine, the top
bit of it appears of at the bottom. Has anyone encountered similar effects?
Could anyone reproduce downloading Nikon D 50 images and then resizing to a
similar effect?

Well, I'd like to help you out but I can't get Gwenview past the point of
wanting a writable path for my files... Even though I specified one in the
settings.
I've never used gwenview but use convert from Imagmagik instead. I use a D70
and have never seen the problem you claim.
Try: convert -geometry 640x480 -quality 75 input.jpg output.jpg
and see how that works.

I didn't know that gwenview could do batch processing and so was most
pleasantly surprise to read this thread.

But I have to admit that I am doing something very terribly wrong
because I just, as a test, batch resized about a dozen images and they
all came out perfect with not a distortion to be seen.

Cheers.