I could not find any overlay holding the developing gstreamer-1.0 http://gstreamer.freedesktop.org/news/ states: "GStreamer Core 0.11.92, Base Plugins 0.11.92, Good Plugins 0.11.92, Bad Plugins 0.11.92, Ugly Plugins 0.11.92, libav Plugins 0.11.92 unstable release This is the third release candidate of the upcoming 1.0 release"
Version 1.0 FINAL is out: http://lists.freedesktop.org/archives/gstreamer-announce/2012-September/000265.html
Created attachment 325642 [details] gstreamer-1.0.0.ebuild
Comment on attachment 325642 [details] gstreamer-1.0.0.ebuild simple ebuild. works for me
gstreamer:1.0 is being added to gnome overlay since it is the only existing user for now.
GStreamer 1 is complete in overlay afaict. There are some eclass changes that need to be reviewed before inclusion in tree.
All gstreamer 1.0 ebuilds are now in tree.
But media-plugins/gst-plugins-meta is not updated yet, please add ebuild for slot 1.