LosslessCut 4+

Lossless video/audio toolkit

Mikael Finstad

    • 4.5 • 15 Ratings
    • $18.99



The swiss army knife of lossless video/audio editing

LosslessCut aims to be the ultimate cross platform ffmpeg GUI for extremely fast and lossless operations on video, audio, subtitle and other related media files. The main feature is lossless trimming and cutting of video and audio files, which is great for saving space by rough-cutting your large video files taken from a video camera, GoPro, drone, etc. It lets you quickly extract the good parts from your videos and discard many gigabytes of data without doing a slow re-encode and thereby losing quality. Or you can add a music or subtitle track to your video without needing to encode. Everything is extremely fast because it does an almost direct data copy, fueled by the awesome ffmpeg which does all the grunt work.


- Lossless cutting of most video and audio formats
- Losslessly cut out parts of video/audio (for cutting away commercials etc.)
- Lossless merge/concatenation of arbitrary files (with identical codecs parameters, e.g. from same camera)
- Lossless stream editing: Combine arbitrary tracks from multiple files (ex. add music or subtitle track to a video file)
- Losslessly extract all tracks from a file (extract video, audio, subtitle and other tracks from one file into separate files)
- Remux into any compatible output format
- Take full-resolution snapshots from videos in JPEG/PNG format
- Manual input of cutpoint times
- Apply a per-file timecode offset
- Change rotation/orientation metadata in videos
- View technical data about all streams
- Timeline zoom and frame/keyframe jumping
- Saves per project cut segments to project file
- View ffmpeg last command log so you can modify and re-run recent commands on the command line
- Undo/redo
- Give labels to cut segments
- View segment details, export/import cut segments as CSV
- Video thumbnails and audio waveform

Example lossless use cases:

- Remove audio tracks from a file
- Add music to a video (or replace existing audio track)
- Include a subtitle into a video
- Extract music track from a video and cut it to your needs
- Cut out commercials from a recorded TV show
- Fix rotation of a video that has the wrong orientation flag set
- Quickly change a H264 MKV video to MOV or MP4 for playback on iPhone
- Import a list of cut times from other tool as a EDL (edit decision list, CSV) and run these cuts with LosslessCut
- Export a list of cut times as a CSV EDL and run these in another tool
- Loop a video / audio clip X times quickly without re-encoding

* Please note:

- LosslessCut is not a tool for exact cutting. Start cut time will be "rounded" to the nearest previous keyframe, which may be up to several seconds before your desired cut point, depending on the video encoding.
- Although LosslessCut can open almost any audio/video format, there are some that can not be cut. There are some known issues with cutting videos from the newest iPhones

Video music: Believe by Roa https://soundcloud.com/roa_music1031

What’s New

Version 1.7

- Implement smart cut (experimental) aka. accurate cuts.
- Move merge / batch functionality from top menu into a menu on the batch file list, this means now you first open files in a batch, then either merge or batch convert them
- Project file (.llc) is now by default stored next to source file (regardless of working directory set)
- J,K,L now change playback speed exponentially
- Check file compatibility in concat dialog and show warning if any mismatches
- Upgrade ffmpeg to v5.0.1
- New segments to chapters mode: Allows you to export segments instead as chapters in MP4/MKV etc
- Chapters viewing
- Improve format detection in concat/merge dialog and allow selecting any output format
- Add black scene detection function
- Show "track disposition" in tracks table
- Add simple support for Final Cut Pro FCPXML
- Auto convert some subtitles to support target format
- Losslessly convert pcm_bluray to pcm_s24le for non-mpegts output formats
- Move sorting from merge dialog to batch files list
- Add function to shift all segments times on timeline
- Segment list allow selecting multiple
- Add function to "select segments by label"
- Add function to fill gaps between segments
- Add function to remove multiple segments
- Add function to Extract all frames as images
- Add function to label selected segments
- Customisable keyboard shortcuts
- File name template editor improvements
- Remove frame rounding when seeking
- Add function to shuffle segments order
- When importing EDL file, don't remove existing segments: allows for combining EDL from multiple sources
- Merge/concat files: Add natural langauge sort function
- Remember window size
- Export frame numbers csv
- Improve waveform and keyframes
- Many Improvements and bugfixes
- Translations

Full changelog:

Ratings and Reviews

4.5 out of 5
15 Ratings

15 Ratings

Soren Oxlade ,

Cut Large Video Into Smaller Videos Super Fast!

OMG! I've dreamed of an app with this feature for years: to be able to slice a video file into many, many segments and then export those segments into individual video clips, and almost instantly! Thank you dev! 🙏

JohnK_SF ,

Fast but not consistent

Experiemented with several files at diffferent cut points. Tried the keyframe vs. exact cut as well. Each time I found that the position of the cut and where in IN point started seemed to vary. Often the first cut if wittin 10-15 seconds of the beginning of the clip would include all media up to the intended cut point. When doing the "normal" cut and saving to .mov I would only get the audio file with no video. Found this to be more frustrating than useful. Emailedd the developer with no response.

Developer Response ,

First apologies for the slow reply, I don't check App Store Connect very often, and for some reason I haven't received your email. Maybe you can try again: mikael@yankee.no and I'll keep a lookout in the spam folder. As for your issues with cut-points, this is actually a known issue and a limitation with lossless cutting. It is not possible for the cut to happen between keyframes, and the way it usually works is that the cutting algorithm will round to the nearest *previous* keyframe. Some videos and codecs have keyframes spaced very far apart, like yours most likely has keyframes 10-15 seconds apart, hence it will include those 10-15 seconds of footage too, even if you try to cut it away. I'm constantly looking for ways to improve this and make it more intuitive. In future versions I plan on finding a way to better indicate which frame the cut will actually happen at, and the ultimate end goal is to implement "Smart Cutting" which can also be accurate.

powerbookdude ,

Just what I needed...

I needed a simple eway to trim videos since Quicktime Pro 7 is no longer able to run. I actually like this better. Very simple and super fast! Works great on my M1 Air.

App Privacy

The developer, Mikael Finstad, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

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The developer does not collect any data from this app.

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