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MKVToolNixLosslessCut
Free

Free and open source under the GPL 2.0.

 Free

The builds published on GitHub are free. The identical app sold through the Microsoft…

Windows, macOS, Linux Windows, macOS, Linux
  • Adds, removes and retags tracks without re-encoding anything
  • Header editor for fixing default track flags and languages
  • Lossless trimming and cutting with an almost direct data copy, so it is extremely fast
  • Discards gigabytes from camera or drone footage without a re-encode and without quality loss
  • Matroska output only
  • Cannot change the video or audio encoding at all
  • Cuts land on keyframes unless you allow a re-encode, so trims are not always frame exact
  • It is a cutting tool, not an editor: no titles, transitions or colour work
Downloadable app Downloadable app
Open source Open source
License: GPL-2.0 License: GPL-2.0
No account needed No account needed
Works offline Works offline

Checked September 21, 2026

Checked September 20, 2026

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