ExifTool by Phil Harvey
I was at my cousin's wedding and took a bunch of photos.? When I went to blend my contribution in with the pictures taken by others, I realized that the timestamp was set wrong .? Ooops.? Luckily, I'm not the only one with this problem.? Phil Harvey of Queens University realized a need and created a command-line tool for Windows as well as Mac OS X to bulk update image files' EXIF data. So with a simple command of:
exiftool "-DateTimeOriginal+=0:0:0 1:0:0" fix
I was able to add an hour to the creation date of the EXIF data in the "fix" directory.? Thanks Phil!
ExifTool is a platform-independent Perl library plus a command-line application for reading, writing and editing meta information in a wide variety of files. ExifTool supports many different metadata formats including EXIF, GPS, IPTC, XMP, JFIF, GeoTIFF, ICC Profile, Photoshop IRB, FlashPix, AFCP and ID3, as well as the maker notes of many digital cameras by Canon, Casio, FujiFilm, HP, JVC/Victor, Kodak, Leaf, Minolta/Konica-Minolta, Nikon, Olympus/Epson, Panasonic/Leica, Pentax/Asahi, Ricoh, Samsung, Sanyo, Sigma/Foveon and Sony.