jheadx

jheadx

$ jhead extended to handle complex batch photo and EXIF data manipulation

New Commands

• $ jheadx fake -d {sourceDir} -s {startDateTime} -f {endDateTime}: jheadx fakes timestamps in a directory of photos.
  • It loops over input files setting EXIF timestamp and file modification timestamp to a sequentially increasing time linearly distributed between startDateTime and endDateTime.
  • Helpful for restoring fake EXIF timestamps that mirror in timestamps the sorted-by-name ordering of photo files in a source directory.
  • This provides a fake timeline that makes use of photos in libraries easier since they remain in order and are approximately accurate to the date or time block that they were taken in.
  • Note: sorting is done in a simple nodejs sort such that the following are all valid orderings. Thus, to ensure the correct order, use the same number of digits for photo numbers (ie. pad with leading 0s).
    • [Photo-1.png,Photo-10.png,Photo-18.png,Photo-19.png,Photo-2.png,Photo-24.png,Photo-3.png,Photo-5.png,Photo-6.png,Photo-8.png]
    • [photo-00001.png,photo-00002.png,photo-00005.png,photo-00008.png,photo-00009.png,photo-00010.png,photo-00014.png,photo-00016.png,photo-00023.png,photo-00027.png]
  • Example Usage: $ jheadx fake -d ./img/test -s 2014-01-24-14:30 -f 2014-01-24-18:00
• $ jhead matchmv -d {sourceDir} -m {matchDir} -p {renamePrefix}: jheadx matches files from source directory to the match directory and renames the matched files in the match directory with the renamePrefix.
  • It makes most sense to have the match directory be a superset of the source directory.
  • Image files are compared using Resemble.js.
  • Note, the matching algorithm between the directories is still O(n^2) so it will really chug on large directories.
• Coming soon $ jheadx restore -d {sourceDir} -r {restoreDir}: jheadx restores EXIF from files in the source directory to any matching filenames on the restore directory

Required

• jheadx does not come with jhead as part of the CLI. jhead is a peer dependency that must be installed separately. Find install instructions here or below:
  • Linux: sudo apt-get update && sudo apt-get install -y jhead
  • macOS: brew install jhead

Resources

• jhead: "Exif Jpeg header manipulation tool" by Matthias Wandel