diff --git a/mybashrc b/mybashrc
index cdb963a..4fa76b6 100644
--- a/mybashrc
+++ b/mybashrc
@@ -785,6 +785,14 @@ _x265_encode() {
     fi
 }
 
+_extract_audio() {
+    ffmpeg -i "$1" -vn -acodec copy "${1%.*}.aac"
+}
+
+_strip_audio() {
+    ffmpeg -i "$1" -codec copy -an "${1%.*}-muted.mp4"
+}
+
 _identify_resolution() {
 
     for i in "$PWD"/*.mp4; do
@@ -824,6 +832,8 @@ alias ffmpeg-merge=_MERGE_VIDEO
 alias ffmpeg-audio=_TRANSFER_AUDIO
 alias ffmpeg-x265=_x265_encode
 alias ffmpeg-resolution=_identify_resolution
+alias ffmpeg-aac=_extract_audio
+alias ffmpeg-strip=_strip_audio
 alias ftpadd=_FTP_ADD
 alias fgrep='fgrep --color=auto'
 alias gg="ping google.fr"