[Gimp-user] Multiple file scaling
Hello list, Is it possible to rescale multiple images (ie: hundreds) without having to open each one individually in the Gimp? I guess this would be a sort of batch processing. Background: I have a perl script which I run to shrink images before uploading to the web. This typically shrinks the size (and thus upload times) of my huge 8MPixel JPEG files from 3-4MB to a few hundred KB. This works great, and I use this script all the time. I just thought it would be great if the Gimp could do something similar, as I imagine this shrink many images before upload is a process that many people need to do. Thanks! -Jon -- -**-*-*---*-*---*-*---*-*-*-*---*-*---*-*-*-*-*--- Jon Lapham [EMAIL PROTECTED]Rio de Janeiro, Brasil Personal: http://www.jandr.org/ ***-*--**---***--- ___ Gimp-user mailing list Gimp-user@lists.xcf.berkeley.edu http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-user
Re: [Gimp-user] Multiple file scaling
On Fri, 2005-06-24 at 10:03 -0300, Jon Lapham wrote: Hello list, Is it possible to rescale multiple images (ie: hundreds) without having to open each one individually in the Gimp? I guess this would be a sort of batch processing. Hi, you can use convert from ImageMagick. cd /dir/with_images/ for image in *; do convert -scale 100x100 $image $image; done check the man page for more info :) nuno -- Non-free programs are dangerous to you and to your community. Don't let them get a place in your life. - RMS ___ Gimp-user mailing list Gimp-user@lists.xcf.berkeley.edu http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-user
Re: [Gimp-user] Multiple file scaling
nuno alexandre wrote: you can use convert from ImageMagick. [snip shell script] As I mentioned, I have a perl script (incidently using the ImageMagick module) which does exactly what your shell script does. I was just curious if/how the Gimp could do it, as I use the Gimp for all my image processing except for this one step. Thanks, Jon -- -**-*-*---*-*---*-*---*-*-*-*---*-*---*-*-*-*-*--- Jon Lapham [EMAIL PROTECTED]Rio de Janeiro, Brasil Personal: http://www.jandr.org/ ***-*--**---***--- ___ Gimp-user mailing list Gimp-user@lists.xcf.berkeley.edu http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-user
Re: [Gimp-user] Multiple file scaling
On Fri, 2005-06-24 at 10:28 -0300, Jon Lapham wrote: nuno alexandre wrote: you can use convert from ImageMagick. [snip shell script] As I mentioned, I have a perl script (incidently using the ImageMagick module) which does exactly what your shell script does. I was just curious if/how the Gimp could do it, as I use the Gimp for all my image processing except for this one step. From what I've found on the net, related to theGimp capabilities to do batch jobs, I can say that you are better suited with ImageMagick and, like you said, your custom perl scripts. I quote: Batch mode is slow. Its not really a practical replacement for tools like ImageMagick or NetPBM when it comes to large scale image conversions or similar. At least not without writing some very clever scripts. The problem with this approach is that gimp/script-fu has no built in procedures to itterate though a list of images. So you cant easily tell gimp to load up *.jpg and run predator.scm on them, at least not without it taking a _long_ time. So you could write a shell script to fire up gimp in batch mode for each image, but that starts a new gimp for every image. And gimp startup time is very very slow, especially if you plan to repeat ir a few hndred times. src: http://adrian.gimp.org/batch/batch-7.html nuno -- Non-free programs are dangerous to you and to your community. Don't let them get a place in your life. - RMS ___ Gimp-user mailing list Gimp-user@lists.xcf.berkeley.edu http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-user
Re: [Gimp-user] Multiple file scaling
Jon Lapham wrote: Is it possible to rescale multiple images (ie: hundreds) without having to open each one individually in the Gimp? I guess this would be a sort of batch processing. David's Batch Processor (DBP) is a Gimp plugin to do exactly this. Look at http://members.ozemail.com.au/~hodsond/dbp.html -- David Hodson -- this night wounds time ___ Gimp-user mailing list Gimp-user@lists.xcf.berkeley.edu http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-user
Re: [Gimp-user] Multiple file scaling
nuno alexandre wrote: I quote: [...] src: http://adrian.gimp.org/batch/batch-7.html I quote http://adrian.gimp.org/batch/batch.html, the contents page for that document: NOTE: This doc is ancient. It it wrong. You really want to look at Basic_Batch instead. That's http://gimp.org/tutorials/Basic_Batch/ Or you can use my plugin, which doesn't allow every image operation (just the common ones), but is entirely interactive, so you don't have to worry about writing a script. -- David Hodson -- this night wounds time ___ Gimp-user mailing list Gimp-user@lists.xcf.berkeley.edu http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-user
Re: [Gimp-user] Multiple file scaling
I can say that you are better suited with ImageMagick and, like you said, your custom perl scripts. I quote: Batch mode is slow. Its not really a practical replacement for tools like ImageMagick or NetPBM when it comes to large scale image conversions or similar. At least not without writing some very clever scripts. The problem with this approach is that gimp/script-fu has no built in procedures to itterate though a list of images. So you cant easily tell gimp to load up *.jpg and run predator.scm on them, at least not without it taking a _long_ time. So you could write a shell script to fire up gimp in batch mode for each image, but that starts a new gimp for every image. And gimp startup time is very very slow, especially if you plan to repeat ir a few hndred times. src: http://adrian.gimp.org/batch/batch-7.html that web page is from 1998 ___ Gimp-user mailing list Gimp-user@lists.xcf.berkeley.edu http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-user
Re: [Gimp-user] Multiple file scaling
David Hodson wrote: Jon Lapham wrote: Is it possible to rescale multiple images (ie: hundreds) without having to open each one individually in the Gimp? I guess this would be a sort of batch processing. David's Batch Processor (DBP) is a Gimp plugin to do exactly this. Look at http://members.ozemail.com.au/~hodsond/dbp.html Okay, I've installed your plugin, wow, really nice work! I have a few suggestions, do you want this discussion on the Gimp Users list, private email, or some other mailing list? -Jon -- -**-*-*---*-*---*-*---*-*-*-*---*-*---*-*-*-*-*--- Jon Lapham [EMAIL PROTECTED]Rio de Janeiro, Brasil Personal: http://www.jandr.org/ ***-*--**---***--- ___ Gimp-user mailing list Gimp-user@lists.xcf.berkeley.edu http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-user
