Assembly instructions

mifi/lossless-cut

The swiss army knife of lossless video/audio editing

Node.jsVite#codec#cut#editor#ffmpeg

Difficulty: Easy
Time: about 5 min
Stars: ★ 45,713
Activity: Updated this month
License: GPL-2.0
Open issues: 160
Got it running: Be the first
Looked up: 3 h ago

Saved setup from 3 h ago

Start here

Website ↗losslesscut.appThe project's own site.Docs ↗losslesscut.appLinked from the README.

Will it work on my device?

Yes, it installs on your macOS

A ready-made macOS download is in the latest release.

Checking for

Download for macOS

3.70.2 · 10/28/2026 ↗

LosslessCut-mac-arm64.dmg

dmg · Apple Silicon · 165.8 MB · 10,281 downloads · best match

Download

Drag the app into Applications.

curl -LO "https://github.com/mifi/lossless-cut/releases/download/v3.70.2/LosslessCut-mac-arm64.dmg"
open "LosslessCut-mac-arm64.dmg"

Other macOS downloads (2)

LosslessCut-mac-universal-DONT-USE-THIS-FILE.pkg

pkg · Universal · 302.9 MB · 292 downloads

Download

curl -LO "https://github.com/mifi/lossless-cut/releases/download/v3.70.2/LosslessCut-mac-universal-DONT-USE-THIS-FILE.pkg"
sudo installer -pkg "LosslessCut-mac-universal-DONT-USE-THIS-FILE.pkg" -target /

LosslessCut-mac-x64.dmg

dmg · Intel · 177.9 MB · 2,322 downloads

Download

Drag the app into Applications.

curl -LO "https://github.com/mifi/lossless-cut/releases/download/v3.70.2/LosslessCut-mac-x64.dmg"
open "LosslessCut-mac-x64.dmg"

Did you get it running?

No reports for macOS yet.

Still stuck? Get a written guide

Claude reads the 8 key files and writes a step-by-step guide for macOS. Once written, it's saved for everyone.

Parts list

1×Node.js 22runtime
1×yarn yarn@4.18.0package manager

Featured in Zain Finds

See the poster ↗Wonderfull... you can trim video without re-encoding it? 😳

Share this manual

Good to know

Has AGENTS.md — instructions for coding agents. You can open Claude Code (or another agent) in the cloned folder and ask it to do the setup for you.
Nested projects: website/package.json

package.json scripts (27)

cleanrimraf dist out common-ts-dist main-ts-dist preload-ts-dist build-resources icon-build
startelectron-vite preview
develectron-vite dev -w
download-ffmpeg-darwin-x64node script/downloadFfmpeg.ts darwin-x64
download-ffmpeg-darwin-arm64node script/downloadFfmpeg.ts darwin-arm64
download-ffmpeg-linux-x64node script/downloadFfmpeg.ts linux-x64
download-ffmpeg-linux-arm64node script/downloadFfmpeg.ts linux-arm64
download-ffmpeg-win32-x64node script/downloadFfmpeg.ts win32-x64
download-ffmpeg-win32-arm64node script/downloadFfmpeg.ts win32-arm64
buildyarn generate-icon && electron-vite build
tsctsc --build
testvitest
lintoxlint --type-aware --deny-warnings --ignore-pattern 'website/**' && oxlint --deny-warnings website
checkyarn tsc && yarn lint && yarn test run && yarn build && yarn check-licenses && yarn scan-i18n && yarn dedupe --check && yarn generate-docs
pack-macyarn build && electron-builder --mac dmg
pack-mas-devyarn build && electron-builder --mac mas-dev -c.mas.provisioningProfile=LosslessCut_Dev.provisionprofile -c.mas.identity='Mikael Finstad (JH4PH8B3C8)'
pack-winyarn build && electron-builder --win zip --x64
postinstallelectron-builder install-app-deps
versionnode script/postversion.ts && git add no.mifi.losslesscut.appdata.xml
pack-linuxyarn build && electron-builder --linux
scan-i18ni18next-cli -c i18next.config.scan.ts extract
generate-iconmkdirp icon-build build-resources/appx && node script/generateIcon.ts
generate-licensesyarn licenses generate-disclaimer -R > licenses.txt && echo ' ffmpeg is licensed under GPL v2+: http://www.gnu.org/licenses/old-licenses/gpl-2.0.html' >> licenses.txt
generate-docsnode script/generateDocs.ts
release-notesnode script/releaseNotes.ts

Files we read (8)

.github/workflows/build.yml

.github/workflows/store-release.yml

.github/workflows/test.yml

.github/workflows/website-release-deploy.yml

.github/workflows/website.yml

README.md

docs/installation.md

package.json

Branch master · 389 files in the repo

Reading the repo

Opening the box…

curl -LO "https://github.com/mifi/lossless-cut/releases/download/v3.70.2/LosslessCut-mac-universal-DONT-USE-THIS-FILE.pkg" sudo installer -pkg "LosslessCut-mac-universal-DONT-USE-THIS-FILE.pkg" -target /