Counter + .JPG resize conversion

[capnjazz]

counter=1000
for f in IMG*.JPG; do
> counter=counter+1
> echo $counter
> small${counter:1}.JPG
> done

I have a series of images I'm trying to resize. Should I being using convert and ffmeg to downsize the files and ultimately make a movie from the .JPGs

[fmw42]

if all the files are in a folder, you can use mogrify to downsize them. see http://www.imagemagick.org/Usage/basics/#mogrify