Upstream now requires >=libdvdread-4.9.0 for the dvd USE flag. Depends on bug #507422
+ 23 Apr 2014; Tom Wijsman <TomWij@gentoo.org> vlc-9999.ebuild: + Reviewed dependencies of 9999 ebuild according to configure.ac; fixes bug + #507424, reported by Uwe L. Korn (uwelk). Thank you very much for reporting this.
Why is this still not fixed in portage? 5 months passed since it was fixed and ebuild in portage still contains that bug.