Ticket #2566: .mts file is handled as videofile.

Signed-off-by: Andrew Borodin <aborodin@vmail.ru>

misc/mc.ext.in

@@ -452,6 +452,10 @@ regex/\.([mM][oO][vV]|[qQ][tT])$
 regex/\.([mM][pP]4|[mM][pP][eE]?[gG])$
 	Include=video
 
+# MPEG-2 TS container + H.264 codec
+regex/\.([mM][tT][sS])$
+	Include=video
+
 regex/\.([vV][oO][bB])$
 	Include=video