Enable ffmpeg/libav-based audio/video codec support

Packages describing “ffmpeg” as local USE flag

Package “ffmpeg” Flag Description
gui-apps/waypipe Link with ffmpeg to allow buffer displays using video streams
sci-libs/caffe2 Add support for video processing operators
sci-libs/pytorch Add support for video processing operators
games-emulation/fceux Use media-video/ffmpeg for video recording
media-sound/pulseaudio-modules-bt APTX, APTX-HD encoding support

All packages providing a “ffmpeg” USE flag (53)