$ sips -Z 1920 *.JPG

$ mencoder mf://*.JPG -mf fps=8 -ovc xvid -xvidencopts bitrate=5000 -o output-mpeg.avi

mencoder output-mpeg.avi -o cropped.avi -vf crop=1720:1440:200:0 -ovc xvid -xvidencopts bitrate=5000

sips is a osx tool, similar tools to resize images are available on linux.