diff --git a/etc/zsh/zshrc b/etc/zsh/zshrc
index ebf7f76..5ec6706 100644
--- a/etc/zsh/zshrc
+++ b/etc/zsh/zshrc
@@ -128,6 +128,13 @@ function die () {
 	exit 1
 }
 
+function tomp4 () {
+	__TOMP4_INPUT="${1}"
+	__TOMP4_OUTPUT="${1%%.*}.mp4"
+	
+	ffmpeg -i "file:${__TOMP4_INPUT}" -codec:v copy -codec:a copy "${__TOMP4_OUTPUT}"
+}
+
 function mkvoid () {
 	__MKVOID_TARGET="$1"
 	__MKVOID_PATH="${__MKVOID_TARGET:P}"