lossless-cut/README.md

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# LosslessCut 🎥 [![Travis](https://img.shields.io/travis/mifi/lossless-cut.svg)]()
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Simple, cross platform video editor for lossless trimming / cutting of videos. Great for rough processing of large video files taken from a video camera, GoPro, drone, etc. Lets you quickly extract the good parts from your videos. It doesn't do any decoding / encoding and is therefore extremely fast and has no quality loss. Also allows for taking JPEG snapshots of the video at the selected time. This app uses the awesome ffmpeg🙏 for doing the grunt work. Also supports lossless cutting in the most common audio formats.
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<b>ffmpeg is now included in the app! 🎉</b>
For an indication of supported formats / codecs, see https://www.chromium.org/audio-video
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![Demo](https://thumbs.gfycat.com/HighAcclaimedAnaconda-size_restricted.gif)
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## Installing / running
- Download [latest LosslessCut from releases](https://github.com/mifi/lossless-cut/releases)
- Run LosslessCut app/exe
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## Documentation
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### Supported platforms
- Mac OS X
- Windows (64/32bit)
- Linux (64/32bit, not tested)
### Typical flow
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- Drag drop a video file into player to load or use <kbd></kbd>/<kbd>CTRL</kbd>+<kbd>O</kbd>.
- Press <kbd>SPACE</kbd> to play/pause
- Select the cut start and end time
- Press the scissors button to export the slice
- Press the camera button to take a snapshot
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The original video files will not be modified. Instead it creates a lossless export in the same directory as the original file with from/to timestamps. Note that the cut is currently not precise around the cutpoints, so video before/after the nearest keyframe will be lost. EXIF data is preserved.
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### Keyboard shortcuts
- <kbd>SPACE</kbd>, <kbd>k</kbd> Play/pause
- <kbd>j</kbd> Slow down video
- <kbd>l</kbd> Speed up video
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- <kbd></kbd> Seek backward 1 sec
- <kbd></kbd> Seek forward 1 sec
- <kbd>.</kbd> (period) Tiny seek forward
- <kbd>,</kbd> (comma) Tiny seek backward
- <kbd>i</kbd> Mark in / cut start point
- <kbd>o</kbd> Mark out / cut end point
- <kbd>e</kbd> Export selection (in the same dir as the video)
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- <kbd>c</kbd> Capture snapshot (in the same dir as the video)
## Development building / running
This app is built using Electron. Make sure you have at least node v4 with npm 3. The app uses ffmpeg from PATH when developing.
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```
git clone https://github.com/mifi/lossless-cut.git
cd lossless-cut
npm install
```
### Running
In one terminal:
```
npm run watch
```
Then:
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```
npm start
```
### Building package
```
npm run download-ffmpeg
npm run extract-ffmpeg
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npm run build
npm run icon-gen
npm run package # builds all platforms
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```
## Credits
- 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")