Following news item 2015-02-01 ffmpeg/libav conflict management: USE=libav I've decided to switch on Gentoo default (media-video/libav) Doing it I've find on my system some packages, needing update dependencies. One of them is media-video/kino equery d virtual/ffmpeg * These packages depend on virtual/ffmpeg: … media-video/kino-1.3.4 (virtual/ffmpeg) At least short test showed it works well with current stable =media-video/libav-9.17.
fixed in -r1