--- dvdshrink-2.6.1-r1.ebuild	2006-04-28 19:35:35.000000000 -0600
+++ dvdshrink-2.6.1-r2.ebuild	2006-07-05 12:57:07.000000000 -0600
@@ -22,6 +22,12 @@
 	X? ( >=dev-perl/gtk2-perl-1.104 )
 	>=app-text/gocr-0.40"
 
+pkg_setup() {
+	built_with_use media-video/transcode dvdread \
+		|| die  "transcode needs dvdread support builtin." \
+			"Please re-emerge transcode with the dvdread USE flag."
+}
+
 src_install() {
 
 	dobin ./usr/bin/dvdshrink || die "Install of dvdshrink failed"