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README.md

LosslessCut 🎥 Travis

Simple, cross platform tool for lossless trimming / cutting of video and audio files. Great for rough processing of large video files taken from a video camera, GoPro, drone, etc. It lets you quickly extract the good parts from your videos and discard GBs of data without losing quality. It doesn't do any decoding / encoding and is therefore extremely fast. 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. ffmpeg is included in the app.

Sponsor

Demo

Installing / running

Documentation

Supported platforms

  • Mac OS X
  • Windows (64/32bit)
  • Linux (64/32bit, not tested)

Supported formats

Since LosslessCut is based on Chromium and uses the HTML5 video player, not all ffmpeg supported formats will be supported. The following formats/codecs should generally work: MP4, MOV, WebM, MKV, OGG, WAV, MP3, AAC, H264, Theora, VP8, VP9 For more information about supported formats / codecs, see https://www.chromium.org/audio-video.

Typical workflow

  • Drag drop a video file into player to load or use ⌘/CTRL+O.
  • Press SPACE to play/pause
  • Select the cut start and end time. Press I to select the start time, O to select the end time for the cut.
  • Press the scissors button to export the slice
  • Press the camera button to take a snapshot

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.

Keyboard shortcuts

Press h To show/hide list of shortcuts

For old shortcuts see here: 41d6991c11/README.md (keyboard-shortcuts)

Known issues

  • Output videos will have an empty portion in the beginning, see discussion in #13
  • If you get an error when cutting any kind of file under Windows, please check your anti-virus. It might be blocking execution of ffmpeg, see #18

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.

git clone https://github.com/mifi/lossless-cut.git
cd lossless-cut
npm install

Running

In one terminal:

npm run watch

Then:

npm start

Release new version

# Commit changes
# Wait for Travis
npm version ...
# Update CHANGELOG.md
# Commit CHANGELOG.md
# Push
npm run download-ffmpeg
npm run extract-ffmpeg
npm run build
npm run icon-gen
npm run package
npm run release

Credits