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LosslessCut — Trim or Convert Videos

mifi

LosslessCut is a free, open-source desktop tool for Windows, macOS and Linux that trims and cuts video and audio without re-encoding, using FFmpeg, and can also merge compatible files, extract tracks and switch the container format losslessly.

Why it fits

Trim or Convert Videos

Desktop

Go to github.com

Good to know

Requires desktop installation.

Check the official page for current quotas and output conditions.

Good to know
Good to knowDesktop
Free outputYes
No account needed—
No watermark—
Works offline—
Batch processing—
Content language—

— Unverified conditions. Official documentation reviewed. The app itself has not been hands-on tested. Matches only documented content-language support, not interface language.

Sources and review date2
Founder feedback and correction

Founder feedback and correction

If you represent this product, send a source-backed correction or update to the editors. Publication follows editorial review.

Editorial selection guide

Last checked:

Who is it for?

  • It suits you when you want to cut a clip out of a long recording quickly and keep the original quality.
  • It suits you when you need to change the container, such as MOV to MP4, or pull the audio or other tracks into a separate file, without re-compressing.

Getting started

  • Download LosslessCut from the GitHub releases page or an official store listing and open your video.
  • Mark the start and end of each segment you want to keep, then export; the app copies the data instead of re-encoding it.
  • Play the exported file and check the cut points, because lossless cuts depend on the file's keyframes.

Decision points

  • Choose it for fast cuts where quality must stay identical; if you need effects, a resolution change or a smaller file, use a converter or editor that re-encodes.
  • Pick the free GitHub download or a store version depending on how you want updates; the project says GitHub downloads are always free.

Limits

  • Cuts are lossless only because nothing is re-encoded, so they are tied to keyframes; the README marks Smart cut as experimental.
  • Merging files losslessly requires identical codec parameters, and switching containers only changes the wrapper; it does not shrink or transcode files.
  • It needs installation and is not a web tool; the README lists store versions for Mac and Windows, but the page does not state their prices.

Frequently asked questions

Is LosslessCut free?

It is open source under GPL-2.0, and the README says downloads from GitHub releases are always free; the Mac App Store and Microsoft Store versions are listed separately.

Does LosslessCut re-encode my video?

Not for cutting: the README says it does an almost direct data copy using FFmpeg, which makes the operation extremely fast and lossless.

Which formats does LosslessCut support?

The README names MP4, MOV, WebM, Matroska, OGG and WAV as generally compatible, and says unsupported codecs can be converted for playback while the export is still done on the original file.

Official sources (2)
github.com/mifi/lossless-cutraw.githubusercontent.com/mifi/lossless-cut/master/README.md

Related guides and comparisons

Trim or Convert Videos: tools and appsAlternatives to LosslessCut