See the last comment: https://forum.shotcut.org/t/easy-guide-to-split-videos/5085/7. From April 2018.
- Load the file into the timeline.
- Choose where you want to split it on the timeline, you’ll see a line.
- Hit ‘S’ on the keyboard.
- Select the part you want gone.
- Right-click, Remove.
- Export tab. Choose your settings, then Export File.
- Back to Timeline
- CRTL + Z
- Select the other half to delete.
- Right click, Remove.
- Export tab. Choose your settings, then Export File.
