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. There are also many more [use cases](#typical-workflow). Everything is extremely fast because it does an almost direct data copy, fueled by the awesome FFmpeg which does all the grunt work.
## Table of contents
- [Features](#features)
- [Example lossless use cases](#example-lossless-use-cases)
- Advanced segment query and mutation JS-based expression language.
- Give labels to cut segments, annotate with tags
- [Import/export](docs.md#import--export-projects) segments: MP4/MKV chapter marks, Text file, YouTube, CSV, CUE, XML (DaVinci, Final Cut Pro) and more
- Losslessly split a video into one file per scene (note you probably have to shift segments, see [#330](https://github.com/mifi/lossless-cut/issues/330).)
- Annotate each segment with one or more tags, then use those tags to organize your segments or use it to create an output folder structure or hierarchy for your segments.
First export each track as individual files. Then use Handbrake or similar to re-encode the audio file (if mp4 file, encode as AAC.) Then open the extracted video stream in LosslessCut. The open your encoded audio file and select "Include all tracks from the new file". Then export.
If you want to support my continued work on LosslessCut, and you want the advantage of a secure and simple installation process with automatic, stable updates, consider getting it from your favorite store:
- Windows: [7zip](https://github.com/mifi/lossless-cut/releases/latest/download/LosslessCut-win-x64.7z) (Windows 7, 8 and 8.1 is [no longer supported after v3.50.0](./requirements.md))
LosslessCut is maintained by me alone and will always remain free and open source. If it's useful to you, consider supporting my work. Alternatively [donate to FFmpeg](https://www.ffmpeg.org/donations.html) because they are doing the world a huge favor.
LosslessCut uses the Chromium browser's HTML5 video player, and not all formats/codecs are [natively supported](https://www.chromium.org/audio-video). Generally, the following file formats work: `MP4`, `MOV`, `WebM`, `Matroska`, `OGG` and `WAV`. Audio codecs: `FLAC`, `MP3`, `Opus`, `PCM`, `Vorbis` and `AAC`. Video codecs: `H264`, `AV1`, `Theora`, `VP8`, `VP9` and `H265` (with hardware decoder). Learn the [difference between a codec and a format](docs.md#primer-video--audio-formats-vs-codecs). Codecs and formats not listed above can still be converted to a supported format/codec from the `File` menu (try the option *Fastest: FFmpeg-assisted playback* first). A low quality version of the file will then be created and opened in the player. Note that the actual cut/export operation will still be performed on the original file, so it will be lossless. This allows for potentially opening any file that FFmpeg is able to decode.
## Documentation
- **[Getting started and documentation](docs.md)**
- [FAQ, known issues, limitations and troubleshooting](issues.md)
- App icon made by [Dimi Kazak](http://www.flaticon.com/authors/dimi-kazak "Dimi Kazak") from [www.flaticon.com](http://www.flaticon.com "Flaticon") is licensed by [CC 3.0 BY](http://creativecommons.org/licenses/by/3.0/ "Creative Commons BY 3.0").
- [Lottie animation by Chris Gannon](https://lottiefiles.com/7077-magic-flow).
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