cinelerraGG : The most advanced non-linear video editor and compositor - Good Guy's version ( https://cinelerra-cv.org/ )
ffmpeg : Complete solution to record/convert/stream audio and video. Includes libavcodec ( https://ffmpeg.org/ )
mkvtoolnix : Tools to create, alter, and inspect Matroska files ( https://mkvtoolnix.download/ https://gitlab.com/mbunkus/mkvtoolnix )
obs-studio : Software for Recording and Streaming Live Video Content ( https://obsproject.com )
smplayer : Great Qt GUI front-end for mplayer/mpv ( https://www.smplayer.eu/ )
vlc : Media player and framework with support for most multimedia files and streaming ( https://www.videolan.org/vlc/ )
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