diff --git a/to_vp9.sh b/to_vp9.sh
new file mode 100644
index 0000000..3a2bc07
--- /dev/null
+++ b/to_vp9.sh
@@ -0,0 +1,58 @@
+#!/bin/bash
+
+# set shopt-options used by this shell-script
+# Note, 0 (true) from shopt -q is "false" in a math context.
+shopt -q globstar; globstar_set=$?
+((globstar_set)) && shopt -s globstar
+shopt -q extglob; extglob_set=$?
+((extglob_set)) && shopt -s extglob
+
+# return default shopt-options
+function finish {
+        ((globstar_set)) && shopt -u globstar
+        ((extglob_set)) && shopt -u extglob
+}
+trap finish EXIT
+
+print_help() {
+  printf "Help: not implemented yet"
+}
+
+while getopts 'e:dh' flag; do
+        case "${flag}" in
+                e) extension+=("$OPTARG");;
+                d) delete=true;;
+                h) print_help
+                exit 0;;
+                *) exit 1 ;;
+        esac
+done
+
+# Print available encoders
+readarray -t encoders <<<$(ffmpeg -encoders -hide_banner|grep vp9)
+echo "In FFMPEG verfügbare Encoder:"
+for i in "${!encoders[@]}"; do
+	echo "$i: ${encoders[i]}"
+	#encoders[i]=$(echo ${encoders[0]} | awk '{print $2}')
+done
+
+# Choose an encoder
+while :; do
+	read -p "Choose an encoder [0]: " encoder
+	[[ $encoder =~ ^[0-9]+$ ]] || { echo "Enter a valid number"; continue; }
+	if ((encoder >= 0 && encoder < ${#encoders[@]})); then
+		encoder=$(echo ${encoders[$encoder]} | awk '{print $2}')
+		break
+	else
+		echo "number out of range, try again"
+	fi
+done
+
+# write array into string
+extension="${extension[*]}"
+# change separator
+extension=${extension// /|}
+
+for file in **/*.@($extension); do
+	echo $encoder
+done