diff --git a/magic/Magdir/animation b/magic/Magdir/animation
index eb5959a4..b69f6858 100644
--- a/magic/Magdir/animation
+++ b/magic/Magdir/animation
@@ -37,6 +37,7 @@
 4	string		ftyp		ISO Media
 # https://aeroquartet.com/wordpress/2016/03/05/3-xavc-s/
 >8	string		XAVC		\b, MPEG v4 system, Sony XAVC Codec
+!:mime	video/mp4
 >>96	string		x		\b, Audio "%.4s"
 >>118	beshort		x		at %dHz
 >>140	string		x		\b, Video "%.4s"