Version 0.55.0 is available upstream. Please consider updating! It seems that version 0.55.0 is available upstream, while the latest version in the Gentoo tree is 0.54.0_p5-r1. You think this warning is false? Read more about it here.
Subtitle Editor is a GTK+3 tool to edit subtitles for GNU/Linux/*BSD. It can
be used for new subtitles or as a tool to transform, edit, correct and
refine existing subtitle. This program also shows sound waves, which makes
it easier to synchronise subtitles to voices.