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mifi/lossless-cut

A cross-platform FFmpeg GUI for lossless cutting, trimming and remuxing of video and audio files without re-encoding.

Open-source alternative to:Adobe Premiere ProAvidemux

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What is it?

LosslessCut is a desktop GUI built on FFmpeg for editing video, audio, subtitle and other media files without re-encoding. Its main use is trimming large camera or drone recordings by copying the wanted segments directly, which keeps the original quality and avoids the time cost of a full re-encode.

Beyond trimming, it can rearrange and merge segments, combine or remove tracks from multiple files, edit file and per-track metadata, and remux a file into another container such as MKV to MP4. It also exports frames and snapshots, splits timelines into equal or random segments, and imports or exports cut lists in formats like CSV, CUE and chapter marks.

The app runs on macOS, Windows and Linux, and offers a basic CLI and HTTP API. Files that the built-in player cannot display can be converted to a low-quality preview while the actual cut still runs on the original.

Key features

  • 01Lossless cutting and trimming of most common video and audio formats
  • 02Lossless merging, rearranging and removing of segments and tracks
  • 03Remux files into a different container format
  • 04Edit file and per-track metadata, chapters and disposition
  • 05Export frames, snapshots and thumbnails as images
  • 06Import and export cut lists in CSV, CUE, chapter and other formats

Use cases

  • Trimming large camera, GoPro or drone recordings without re-encoding
  • Removing commercials or silent parts from a recorded TV show
  • Adding, replacing or removing audio and subtitle tracks in a video
  • Converting MKV files to MP4 or MOV for playback on iPhone

Quick start

  1. 1

    Download the app from the releases page or an official store listed in the README

  2. 2

    Open the downloaded LosslessCut app and load a video or audio file

Things to know

  • Licensed under GPL-2.0, a copyleft license that limits how derived code can be distributed.
  • Some formats and codecs are not played natively and need an FFmpeg-assisted conversion for preview.
  • Smart cut is marked experimental in the README.
  • Windows 7, 8 and 8.1 are no longer supported after v3.50.0.

Topics

#ffmpeg#video-editing#lossless#video#audio#gui#media#cross-platform#codec#cut

FAQ

What is lossless-cut?
A cross-platform FFmpeg GUI for lossless cutting, trimming and remuxing of video and audio files without re-encoding. LosslessCut is a desktop GUI built on FFmpeg for editing video, audio, subtitle and other media files without re-encoding. Its main use is trimming large camera or drone recordings by copying the wanted segments directly, which keeps the original quality and avoids the time cost of a full re-encode.
Is lossless-cut free to use? What license does it have?
lossless-cut is open source under the GPL-2.0 license. Check the license terms before using it in commercial products.
Is lossless-cut still maintained?
Actively maintained. The last commit to lossless-cut was on Oct 20, 2026.
What can I use lossless-cut for?
Trimming large camera, GoPro or drone recordings without re-encoding Removing commercials or silent parts from a recorded TV show Adding, replacing or removing audio and subtitle tracks in a video Converting MKV files to MP4 or MOV for playback on iPhone
How do I install lossless-cut?
Download the app from the releases page or an official store listed in the README Open the downloaded LosslessCut app and load a video or audio file
Where can I get lossless-cut?
The source code and installation instructions are on GitHub: https://github.com/mifi/lossless-cut

Summary generated by AI from the project's README. GitHub stats refresh daily.

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