Lossless-Cut (demuxer) & Vidcutter
A small and fast open source program to trim a shot without having to recode. Similar to Avidemux. It's based on the Chromium HTML5 engine, which I don't understand if it's good or bad and doesn't recognize h265.
Thanks for sharing.
But it anyone who wants more formats to choose from as well as editing the video losslessly, here's my personal recomendation: Joyoshare Video Cutting Software
This proprietary "Video Cutting Software" doesn't offer a version for Linux (only Windows and Mac). I really don't see the relevance of suggesting it on this forum ... A specialized site for video editing under Linux with free software!