# Use filename as the date

# Look at all media files and ignore JSON

--ext

json

# Recursive

-r

# Show processed filenames

-v0

# Attempt to modify media only if the info doesn't already exist

-if

($Filetype eq "MP4" and not $quicktime:TrackCreateDate) or ($Filetype eq "MP4" and $quicktime:TrackCreateDate eq "0000:00:00 00:00:00") or ($Filetype eq "JPEG" and not $exif:DateTimeOriginal) or ($Filetype eq "PNG" and not $PNG:CreationTime)

# Look for a filename that looks like a date.

# The logic is:

# anything

# anything that's not a number (to make sure the next sequence of numbers is

# exactly 8 long)

# sequence of 8 numbers (this is meant to be YYYYMMDD)

# optional separator

# sequence of 6 numbers (this is meant to be HHMMSS)

# anything that not a number (to make sure long runs of numbers are rejected)

# anything that's not a number (to get to the .extension)

# .extension

-if

$Filename =~ /.*[^0-9]([0-9]{8}.?[0-9]{6})[^0-9].*/

# Sanity check year equal or less than the current year

-if

(${Filename;s/.*[^0-9]([0-9]{4})[0-9]{4}.?([0-9]{6})[^0-9].*/$1/}) <= ${now;s/^([0-9]{4}).*/$1/}

#

# Write out the tags. Extract the YYYYMMDDHHMMSS date from the filename and

# feed it into the various date/time tags. Although not strictly the

# 'YYYY:MM:DD HH:MM:SS' format expected by exiftool, the tools seems smart

# enough to handle anything that looks close to a legitimate date/time.

#

# EXIF for regular JPEG photos

-AllDates<${filename;s/.*[^0-9]([0-9]{8}.?[0-9]{6})[^0-9].*/$1/}

# PNG-specific

-XMP-Exif:DateTimeOriginal<${filename;s/.*[^0-9]([0-9]{8}.?[0-9]{6})[^0-9].*/$1/}

-PNG:CreationTime<${filename;s/.*[^0-9]([0-9]{8}.?[0-9]{6})[^0-9].*/$1/}

# Quicktime / MP4

-QuickTime:TrackCreateDate<${filename;s/.*[^0-9]([0-9]{8}.?[0-9]{6})[^0-9].*/$1/}

-QuickTime:TrackModifyDate<${filename;s/.*[^0-9]([0-9]{8}.?[0-9]{6})[^0-9].*/$1/}

-QuickTime:MediaCreateDate<${filename;s/.*[^0-9]([0-9]{8}.?[0-9]{6})[^0-9].*/$1/}

-QuickTime:MediaModifyDate<${filename;s/.*[^0-9]([0-9]{8}.?[0-9]{6})[^0-9].*/$1/}

# Clobber everything

-overwrite_original