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Old 10-31-2015, 06:18 AM   #1
mike acker
Registered: Feb 2014
Location: Michigan
Distribution: LMDE MINT AMD 64
Posts: 95

Rep: Reputation: Disabled
Camera tether -- error correcting time

if I tether my camera to my 'Nix box the Nix box subtracts 4 hours from the time on the images as they are transferred

e.g if the time on the chip -- and in the EXIF -- is 1307 -- when the image is stored in 'Nix it is changed to 0907

the EXIF data is not changed; only the time on the file directory entry

-rw-r--r-- 1 mike mike 11235586 2015-10-29 09:07:14.000000000 -0400 VM2A3123.JPG
it appears the 'Nix box (LMDE2/Debian) *thinks* the camera data is at UTC -- and attempts to correct it to local time

any clues on correcting this ?

if i read the camera chip directly instead of using the tether the times all come across correct.

Last edited by mike acker; 10-31-2015 at 06:20 AM.
Old 10-31-2015, 11:32 AM   #2
mike acker
Registered: Feb 2014
Location: Michigan
Distribution: LMDE MINT AMD 64
Posts: 95

Original Poster
Rep: Reputation: Disabled
script for fixing files in a directory

# reset jpeg file by 4 hours
echo "correct *.JPG time stamps.   Enter hours, e.g. +4 for UTC to EDT"
read hrs_adj
echo "Adjustment will be " $hrs_adj " hours. "

read -p "Enter name of directory to be corrected" directory_name

echo "Directory name: " $directory_name

 for file_nm in "$directory_name"/*.JPG
    echo "File name to touch: " "$file_nm"  
    # to increment time stamp relative to subject file
    touch -r "$file_nm" -d " $hrs_adj hour " "$file_nm"
  echo "Corrected Directory:"
  ls -l "$directory_name"

echo "done"


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