avidemux : Video editor designed for simple cutting, filtering and encoding tasks ( http://fixounet.free.fr/avidemux )
smplayer : Great Qt GUI front-end for mplayer/mpv ( https://www.smplayer.eu/ )
subliminal : Python library to search and download subtitles ( https://github.com/Diaoul/sublimina )
vobsub2srt : Converts VobSub subtitles (.sub/.idx) to .srt text subtitles using tesseract ( https://github.com/ruediger/VobSub2SRT )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a stefantalpalaru
For Paludis use this rsync : rsync://gentoo.zugaina.org/stefantalpalaru-portage
If you have a problem : ycarus(-at-)zugaina.org