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.
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. This app uses the awesome ffmpeg (included) for doing the grunt work.
- Lossless cutting of common video and audio formats
- Take full-resolution snapshots from videos in JPEG/PNG format
- Change rotation/orientation metadata in videos. Great for rotating phone videos that turns out the wrong way without actually re-encoding the video.
## Installing / running
## Installing / running
- Download [latest LosslessCut from releases](https://github.com/mifi/lossless-cut/releases)
- Download [latest LosslessCut from releases](https://github.com/mifi/lossless-cut/releases)
- Run LosslessCut app/exe
- Run LosslessCut app/exe
- On OSX, to open LosslessCut.app, Right Click > Open to bypass the security warning.
- On OSX, to open LosslessCut.app, Right Click > Open to bypass the security warning.
## Documentation
## Supported platforms
### Supported platforms
- Mac OS X
- Mac OS X
- Windows (64/32bit)
- Windows (64/32bit)
- Linux (64/32bit, not tested)
- Linux (64/32bit, not tested)
### Supported formats
## Supported formats
Since LosslessCut is based on Chromium and uses the HTML5 video player, not all ffmpeg supported formats will be supported.
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
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.
For more information about supported formats / codecs, see https://www.chromium.org/audio-video.
Note that the MPEG TS format is not supported. See known issues.
### Typical workflow
## Typical workflow
- Drag drop a video file into player to load or use <kbd>⌘</kbd>/<kbd>CTRL</kbd>+<kbd>O</kbd>.
- 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
- Press <kbd>SPACE</kbd> to play/pause
- Select the cut start and end time. Press <kbd>I</kbd> to select the start time, <kbd>O</kbd> to select the end time for the cut.
- Select the cut start and end time. Press <kbd>I</kbd> to select the start time, <kbd>O</kbd> to select the end time for the cut.
- Press the rotation button if you want to set rotation metadata
- Press the rotation button if you want to override orientation metadata
- Press the scissors button to export the slice
- Press the scissors button to export the slice
- Press the camera button to take a snapshot
- 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.
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.
- Some output videos will have an empty portion in the beginning (you might lose a few seconds after your in-cutpoint). A tip is to set the cutpoint a few extra seconds before the part you want to keep, that way you will not lose anything. See discussion in [#13](https://github.com/mifi/lossless-cut/pull/13)
- Some output videos will have an empty portion in the beginning (you might lose a few seconds after your in-cutpoint). A tip is to set the cutpoint a few extra seconds before the part you want to keep, that way you will not lose anything. See discussion in [#13](https://github.com/mifi/lossless-cut/pull/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](https://github.com/mifi/lossless-cut/issues/18)
- 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](https://github.com/mifi/lossless-cut/issues/18)
- Unsupported files can be losslessly remuxed to for example mp4 first with the following command: `ffmpeg -i input.ts -acodec copy -vcodec copy out.mp4`
Mikael Finstad
9 years ago
committed by
GitHub