Rename a bunch of movie files to include the GPS location and recorded date from EXIF metadata

rename_videos.sh

#!/usr/bin/env bash
# Requires: exiftool, mediainfo (install via apt/brew first)
# Usage:
#     $ cd ~/Videos
#     $ ./rename_videos.sh
#     GP013838.MP4   ->    2018-10-12_08-59-59__Montreal_QC_Canada__GP013838.mp4
#     ...

GOOGLE_MAPS_API_KEY="yourkeyhere"

ls *.{mov,MOV,mp4,MP4} \
| while read oldname; do
    # lowercase the extensions and replace spaces with underscores
    newname="$(echo "$oldname" | perl -pe 's/ /_/gm' | perl -pe 's/MOV/mov/gm' | perl -pe 's/MP4/mp4/gm')"
    
    # get the recording date from EXIF metadata
    recorded_date="$(
        mediainfo "$oldname" \
        | grep "Encoded date" \
        | sort -u \
        | perl -pe 's/:/-/gm' \
        | awk '{print $5"__"$6}'
    )"
    
    # get the created date from filesystem attributes
    created_date="$(
        stat "$oldname" \
        | grep 'Modify:' \
        | perl -pe 's/Modify: (....-..-.. ..:..:..)\..+ .+$/$1/gm' \
        | perl -pe 's/ /__/gm' \
        | perl -pe 's/:/-/gm'
    )"
    
    # Get the GPS coordinates from EXIF metadata
    latlng="$(
        exiftool -n -p '$GPSLatitude,$GPSLongitude' $oldname 2>&1 \
        | grep -v 'not defined' \
        | grep -v 'Warning' \
        | grep -v 'image files read'
    )"
    # Get the city_province_country from the GPS coordinates
    if [[ "$latlng" ]]; then
        location="$(
            curl -X GET -s \
                -H "Content-Type: application/json" \
                "https://maps.googleapis.com/maps/api/geocode/json?latlng=${latlng}&key=$GOOGLE_MAPS_API_KEY" \
            | grep 'compound_code' \
            | head -n 1 \
            | perl -pe 's/(.+) (.+), (..), (.+).,/$2_$3_$4/gm'
        )"
    fi

    # build the new $DATE__$LOCATION__$OLDNAME filename
    if [[ "$location" ]]; then
        newname="${location}__${newname}"
    fi
    if [[ "$recorded_date" ]]; then
        newname="${recorded_date}__${newname}"
    elif [[ "$created_date" ]]; then
        newname="${created_date}__${newname}"
    fi
    if [[ "$newname" ]] && [[ "$newname" != "$oldname" ]]; then
        echo "$oldname         ->       $newname"
        # mv "$oldname" "$newname"
    fi
done