diff --git a/main.sh b/main.sh
new file mode 100755
index 0000000..b7c3676
--- /dev/null
+++ b/main.sh
@@ -0,0 +1,61 @@
+#!/bin/bash
+
+set -e
+
+usage() { echo "Usage: $0 [-d <input directory containing your_facebook_activity etc>] [-O <output directory >]" 1>&2; exit 1; }
+
+while getopts ":O:d:" o; do
+    case "${o}" in
+        O)
+            O="${OPTARG}" 
+           ( [ -d "${O}" ] && echo "No output directory specified, outputting in the directory specified by -d flag.") || (echo "Not a directory ${d}" && usage )
+        ;;
+        d) d="${OPTARG}"
+            [ -d "${d}" ] || (echo "Not a directory ${d}" && usage)
+        ;;
+        *) usage
+        ;;
+    esac
+done
+
+if [ -z "$d" ]; then
+    echo "Missing -d." >&2
+    usage && exit 1
+fi
+
+if [ -z "$O" ]; then
+    O="$d"
+fi
+
+# cleaning pathnames
+O="${O%/}" 
+d="${d%/}"
+! [ -f "$d/metadata.txt" ] || (echo "metadata.txt already exists in the input directory, exiting for now." && exit 1)
+
+
+if [ -d "${d}/your_instagram_activity" ] || [ -d "${d}/your_facebook_activity" ]; then
+    m="$(find "${d}" -maxdepth 1 -name "your_*_activity" -exec basename '{}' ';' | cut -d '_' -f 2)"
+else
+    echo "Please ensure the input directory specified by -d contains the \"your_{platform}_activity\" folder." && usage 
+fi
+
+echo "Wrapping aac files in mp4 containers. Placing it in the same directory as the original file."
+
+fd '' -e 'aac' "$d" | parallel -n 1 -P $(nproc) 'filename={} && ffmpeg -i ${filename: -4}.aac -c:a copy ${filename: -4}.mp4'
+
+echo "aac to mp4 conversion complete. Proceeding to create folders under $d/exif_media."
+mkdir -p "$O/exif_media/"{audio,photo,video}
+echo "Folders successfully created."
+echo "Extracting information and metadata from all media and outputting into \"${d}/metadata.txt\" file."
+for folder in inbox e2ee_cutover archived_threads filtered_threads;
+    do 
+        if [ -d "${d}/your_${m}_activity/messages/$folder" ]; then
+            echo "$(dirname "$0")/smmdo" "$m" "$folder" "${d}/metadata.txt"
+            "$(dirname "$0")/smmdo" "$d" "$m" "$folder" "${d}/metadata.txt"
+        fi
+done
+
+echo "Adding metadata to media files and outputting the editted files in \"$O/exif_media\"."
+"$(dirname "$0")/edit_exif_move_media" -f "${d}/metadata.txt" -a "$O/exif_media/audio" -v "$O/exif_media/video" -p "$O/exif_media/photo"
+
+echo "EXIF data successfully added and outputted in \"$O/exif_media\"."