--- /usr/portage/media-video/h264enc/h264enc-10.4.1.ebuild	2015-08-10 14:01:01.000000000 +0100
+++ h264enc-10.4.6.ebuild	2016-01-08 21:46:47.590877625 +0000
@@ -11,7 +11,8 @@
 LICENSE="GPL-2"
 SLOT="0"
 KEYWORDS="~amd64 ~x86"
-IUSE="aac dvd flac lame matroska mp4 ogm vorbis"
+IUSE="aac aacplus dvd faac fdkaac flac lame matroska mp4 neroaac ogm vorbis"
+REQUIRED_USE="aac? ( || ( aacplus faac fdkaac neroaac ) )"
 
 RDEPEND="
 	media-video/mplayer[encode,x264]
@@ -20,8 +21,11 @@
 	sys-devel/bc
 	sys-process/time
 	aac? (
-		media-libs/faac
-		media-sound/aacplusenc )
+		faac? ( media-libs/faac )
+		fdkaac? ( media-libs/fdk-aac )
+		aacplus? ( media-sound/aacplusenc )
+		neroaac? (	media-sound/neroaac )
+	)
 	dvd? ( media-video/lsdvd )
 	flac? ( media-libs/flac )
 	lame? ( media-sound/lame )