gst-plugins-base : Basepack of plugins for gstreamer ( https://gstreamer.freedesktop.org/ )
libbpg : BPG (Better Portable Graphics) is a new image format ( http://bellard.org/bpg/ )
libdvbpsi : library for MPEG TS/DVB PSI tables decoding and generation ( https://www.videolan.org/libdvbpsi )
libdvdcss : A portable abstraction library for DVD decryption ( https://www.videolan.org/developers/libdvdcss.html )
libshout-idjc : Libshout-idjc is libshout plus some extensions for IDJC ( https://sourceforge.net/projects/libshoutidjc.idjc.p/ )
libsquish : DXT compression library ( https://sourceforge.net/projects/libsquish/ )
mesa : OpenGL-like graphic library for Linux ( https://www.mesa3d.org/ https://mesa.freedesktop.org/ )
x264 : A free library for encoding X264/AVC streams ( https://www.videolan.org/developers/x264.html )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a poly-c
For Paludis use this rsync : rsync://gentoo.zugaina.org/poly-c-portage
If you have a problem : ycarus(-at-)zugaina.org