Ruby 1.9.1 - Change JPG image name using EXIF information.
Recently I got a lot of images from a trip. Pictures I've received were from a different cameras. I wanted to create a chronological photo gallery. Unfortunately when I copied the files, I realized that all of them have the same date and time and different prefixes. Fortunately I've noticed that all images I got, contains EXIF JPG information. That is why I've created a ruby script, which changes images names, using Date Time, taken from EXIF information. To read EXIF information use ruby exifr gem. gem install exifr Here is a code. Enjoy! require 'rubygems' require 'exifr' inputDir = ARGV[0] prefix = ARGV[1].nil? ? "IMG" : ARGV[1] if (ARGV.length >= 1) Dir.glob("#{inputDir}/*.jpg",File::FNM_CASEFOLD).each() {|file| timeTaken = EXIFR::JPEG.new(file).date_time if (timeTaken.nil? & !EXIFR::JPEG.new(file).exif.nil?) timeTaken = EXIFR::JPEG.new(file).exif.date_time_original end if (timeTaken.nil?) ...