[throw101010]

The intermediary solution for me between ffmpeg and kdenlive is LosslessCut (https://github.com/mifi/lossless-cut). Also free and open-source... of course it look less cool than a Terminal UI like the OP, but it's very practical when I don't want to reencode everything, or if I just need to change the format of container (MP4, MKV, etc.).

[nacs]

Lossless-cut has both an HTTP api and a CLI so it could be controlled via a lightweight TUI if someone wanted.

[mrbluecoat]

I agree. Trim is nice but the killer feature of LosslessCut is cutting a scene in the middle and merge results while maintaining correct subtitles.

[tim-projects]

I use losslesscut but its package size is absolutely massive. Would really appreciate alternatives like this.