LosslessCut is a simple, Open Source, cross-platform video editor for lossless trimming and cutting of videos.
This utility is useful for rough processing large video files captured with video cameras, drones, GoPro, etc. You will be able to quickly pull out the good parts of a video and disregard the rest without losing a bit of quality.
LosslessCut omits any encoding or decoding to keep the cutting process fast and efficient. It supports most of the standard cutting formats, but since it's Chromium-based (HTML video player), you will find that not all FFmpeg formats are supported.
The following formats and codecs should work without issue MP4, MOV, WebM, MKV, OGG, WAV, MP3, AAC, H264, Theora, VP8, VP9.