diff --git a/bin/tdm-media b/bin/tdm-media
new file mode 100755
index 0000000..7b24b23
--- /dev/null
+++ b/bin/tdm-media
@@ -0,0 +1,34 @@
+#!/system/bin/sh 
+
+function task.video.change.container {
+	CONTAINER=$1;
+	shift;
+	for video in "$@"; do 
+		echo "Starting processing Video: $video";
+		ffmpeg -i "$video" -vcodec copy -acodec copy "${video}.$CONTAINER"
+		echo "Processing done.";
+	done
+}
+
+function task.nikon-mp4 {
+	task.video.change.container mp4 "$@"
+}
+
+function task.downscale {
+	TARGET=$1
+	shift
+	SIZE=2048
+	for image in "$@"; do
+		target_file=$TARGET/$(basename $image)
+		echo "Downsampling image $image to $target_file"
+		convert $image \
+			-filter Lanczos -sampling-factor 1x1 \
+			-resize "${SIZE}x${SIZE}>" \
+			-quality 90 \
+			$target_file
+	done
+
+}
+TASK=$1
+shift
+task.$TASK "$@"
diff --git a/bin/tdm-media-cbz b/bin/tdm-media-cbz
new file mode 100755
index 0000000..027ac42
--- /dev/null
+++ b/bin/tdm-media-cbz
@@ -0,0 +1,62 @@
+#!/bin/sh
+
+##
+## Creates cbz archive from supplied folder.
+##
+
+FILENAME=$(basename $0)
+show_help() {
+        echo $FILENAME
+	grep "\#\#" $0 | cut -d\# -f3-
+	echo
+}
+
+PREFIX="";
+DELETE_AFTER=false
+SUFFIX=cbz
+while getopts "hp:s:d" opt; do
+	case $opt in
+
+##
+##		-p Prefix resulting filenames with supplied prefix.
+##
+##			All resulting files will start with supplied
+##			prefix e.g. -p foo- bar baz will result in
+##			creation of archives foo-bar.cbz and foo-baz.cbz:
+##
+		p)
+			PREFIX="$OPTARG";
+			;;
+
+##
+##		-d Delete supplied folders after creating archives.
+		d)
+			DELETE_AFTER=true;
+			;;
+##
+##      -s Change file type suffix from default cbz to specified.
+##
+##         All resulting files will end with supplied suffix instead
+##         of cbz. E.g. -s zip will trigger creation of normal zip files.
+        s) 
+		    SUFFIX="$OPTARG";
+		    ;;
+		h)
+			show_help;exit 1;;
+		\?) show_help;exit 1;;
+		:)	echo "Option -$OPTARG requires an argument." >&2 ; exit 1;;
+	esac
+done
+
+shift $(($OPTIND-1))
+
+echo Prefix: $PREFIX Suffix: Delete folders: $DELETE_AFTER
+echo $@
+for DIR in "$@"; do
+	if [ -d "$DIR" ]; then
+		NAME=$(basename "$DIR")
+		echo "Going to create $NAME"
+		zip -r "${PREFIX}${NAME}.${SUFFIX}" "$DIR"
+	fi
+done
+
diff --git a/bin/tdm-media-nikon-mov-keyframes-jpeg b/bin/tdm-media-nikon-mov-keyframes-jpeg
new file mode 100755
index 0000000..466fcc1
--- /dev/null
+++ b/bin/tdm-media-nikon-mov-keyframes-jpeg
@@ -0,0 +1,3 @@
+#!/bin/sh
+## Extract keyframes from Nikon J1 MOV files
+ffmpeg -i *.MOV -vf "select=eq(pict_type\,I),setpts=N/(29.97*TB)" thumbnails-%02d.jpeg
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