lossless-cut - Code

LosslessCut is a cross-platform FFmpeg-based GUI designed for extremely fast and lossless editing of video, audio, subtitles, and related media files.

Its primary goal is lossless trimming and cutting, allowing you to quickly extract the useful parts of large media files (from cameras, drones, GoPros, etc.) without re-encoding—saving both time and storage while preserving 100% quality.

Because operations are mostly direct data copies powered by FFmpeg, everything is blazing fast. LosslessCut supports many additional workflows beyond simple cutting—see the examples below.

Features

Example Lossless Use Cases

Features

Lossless cutting of most video and audio formats

Experimental Smart Cut

Remove unwanted segments (e.g. commercials) without re-encoding

Lossless rearranging of video/audio segments

Lossless merge & concatenation (same codec parameters)

Full multi-track / multi-stream editing:

Combine tracks from multiple files

Remove unnecessary tracks

Replace or re-encode selected tracks only

Extract all tracks (video, audio, subtitles, attachments)

View and edit technical metadata (file & per-track)

Select tracks for playback (including multiple audio tracks)

Fast multi-file workflow (batch export not yet supported)

Keyboard-driven workflow with customizable shortcuts

Lossless remuxing between containers (e.g. MKV → MP4)

Full-resolution snapshots (JPEG / PNG)

Export frames by interval, scene change, or thumbnails

Manual cutpoint input

Timecode offset support (manual & auto)

Rotation/orientation metadata editing

Timeline zooming & keyframe navigation

Video thumbnails & audio waveform display

Project-based cut segment saving

FFmpeg command log (view, modify, re-run)

Undo / redo

Advanced JS-based segment query & mutation language

Segment labels & tagging

Import / export segments (chapters, CSV, XML, YouTube, etc.)

Embedded MKV / MP4 chapter editor

Subtitle viewing

Black scene, silence & scene-change detection

Automatic segmentation by length, size, count, or randomization

Speed up / slow down video or audio (FPS-based)

Basic CLI & HTTP API

Embedded GPS track visualization (DJI)

Lossless HTTP video downloads (e.g. HLS .m3u8)

Example Lossless Use Cases

Remove commercials from recorded TV

Extract or replace audio tracks

Cut music tracks from video files

Combine video and audio from separate recordings

Add external subtitles

Convert containers (MKV ↔ MP4 ↔ MOV)

Import/export EDL cut lists

Cut by chapters (MP4 / MKV / YouTube)

Fix incorrect rotation metadata

Loop clips without re-encoding

Split by scenes or silence

Export frames or thumbnails

Organize segments using tags & labels

Download

To support ongoing development and enjoy secure installs with automatic updates, consider downloading LosslessCut from your preferred store:

App Stores

macOS:

Windows:

Linux

Manual Downloads (Free)

macOS: Intel / Apple Silicon (DMG)

Windows: x64 (7zip)

Linux: AppImage, tar.bz2 (x64, arm64, armv7l)

All releases

Nightly builds 🧪

APPX (Windows) and PKG (macOS) are not supported.

Supported Formats

LosslessCut uses Chromium’s HTML5 video player. Supported formats include:

Containers: MP4, MOV, MKV, WebM, OGG, WAV Audio codecs: FLAC, MP3, Opus, PCM, Vorbis, AAC Video codecs: H.264, H.265 (HW), AV1, VP8, VP9, Theora

Unsupported formats can be converted for preview using FFmpeg-assisted playback—final exports remain lossless.