I use the command line to manipulate whole directories of files using a combination of command options and wildcards.Įxiftool.exe -all= -overwrite_original *. The software is intuitive and easy to use. GPS devices and camera clocks are often not in sync. ExifTool can interpret most common geodata formats, especially GPX. Two options are important here: -geotrackTRKFILE and -geosyncMIN:SEC. Exiftool is a cross-platform tool that can remove, modify, and add Exif and other metadata in various file formats. ExifTool is especially useful for adding geodata from external tracks for recordings that do not yet contain location data. My favorite software to remove Exif data is ExifTool by Phil Harvey. The following shows how to manage photos using exiftool. The above command lists all time relevant information (-time:all) for the given JPEG file. With the -a option, duplicate tags are shown as well. It is therefore best to remove Exif data before publishing or posting pictures online and avoid privacy and security concerns. Instructing exiftool to print out the tag name and group name of each tag is done using the -G0:1 option. The distinctive ID number of the camera device can be used to identify the owner of the camera. When pictures from these devices are posted online, the Exif metadata can be used to sense the time the photo was taken and the location where it was taken, if the camera or cell phone has the GPS location data feature. The file contains one argument per line (NOT one option per line - some options require additional. Since the Exif data contain information about the photo, the Exif data pose privacy and security concerns. Read command-line arguments from the specified file. Many owners of digital cameras and cell phones are oblivious that their photos are tagged with sensitive information. Other devices insert more extensive data such as camera settings, GPS location data, and other information that might be specific to that camera or cell phone. Some devices just embed the make and model of the camera. This is done using the Exchangeable image file format (Exif) data structure or standard. The only downside for many potential users is the fact, that ExifTool is a 'command-line' utility. Nearly all cell phones, digital cameras, and scanners insert metadata in the digital photos they capture.
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