Hello, this is the part of mediastreamer update, see bug 356977 for details.
Created attachment 264285 [details, diff] mediastreamer-x264-1.4.1.ebuild.patch Changes between mediastreamer-x264-1.3.3.ebuild and mediastreamer-ilbc-2.0.1.ebuild. Minimal requirement for mediastreamer was leveled up.
Created attachment 268981 [details, diff] mediastreamer-x264-1.4.1.ebuild.patch Depend on virtual/ffmpeg.
Thank you Andrew. New version is in the tree.