Lossless Cut
Lossless trimming and cutting of video files without re-encoding.
External Tool
This open-source tool is maintained externally. View the source on GitHub to learn more or run it yourself.
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What is Lossless Cut?
LosslessCut is an open-source, cross-platform video and audio editing tool designed for lossless trimming, cutting, and processing of media files. It leverages FFmpeg under the hood to perform fast, high-quality edits without re-encoding, preserving the original resolution, bitrate, and quality of the source material. Ideal for users dealing with large video files from cameras, drones, or GoPros, it enables efficient space-saving by removing unwanted segments without compromising data integrity. The tool is particularly valuable for editors, content creators, and archivists who need to streamline raw footage or extract specific clips for sharing or storage. Its primary purpose is to eliminate the need for time-consuming re-encoding processes, which can degrade quality and consume significant computational resources.
How it works
LosslessCut is a graphical user interface (GUI) built around FFmpeg, offering lossless editing capabilities for video, audio, subtitles, and related media. It simplifies complex FFmpeg commands into an intuitive interface, allowing users to perform tasks like trimming, cutting, and extracting audio without technical expertise. The tool addresses the challenge of managing large video files by enabling users to remove unnecessary segments quickly. This is critical for professionals who need to prepare content for editing, share clips, or archive footage without losing quality. LosslessCut supports trimming video and audio files by specifying start/end times, extracting specific segments, and cutting out unwanted parts. It handles common formats like MP4, AVI, MKV, and WAV, and can process subtitles in SRT or ASS formats. Users can also adjust audio parameters like volume and apply filters without re-encoding.
How to use it
- 1Launch the application and load the media file via the file browser. 2. Use the timeline to select the start and end points for trimming. 3. Apply the cut operation, which will generate a new file with the specified segments. 4. Export the result, ensuring the output format matches the source or desired settings. Practical tips include using keyboard shortcuts for quick actions, leveraging the 'Extract Audio' feature for isolating soundtracks, and checking the 'Preview' option to verify edits before exporting.
What it can do
- lossless video cutting
Use cases
Assumptions and limitations
Assumptions
- source: https://github.com/mifi/lossless-cut
- license: GPL-3.0 — free to use
- privacy: Self-hosted — you control your data
Limitations
- Requires FFmpeg to be installed and configured on the system
- Limited advanced filtering capabilities compared to full FFmpeg command-line tools
- Some language translations may be incomplete or outdated
- Compatibility issues with very old operating system versions (e.g., Windows XP)
- No built-in support for real-time preview of complex edits
Understanding the result
Lossless trimming and cutting of video files without re-encoding.
Tool details
- Clearly flagged when a network request is needed.
- No account, no sign-up, and no tracking of your content.
- Powered by (GPL-3.0).
- Built with
- (mifi/lossless-cut)
- License
- GPL-3.0
- Runs locally
- No — requires a network request
- Verification
- Not yet verified
- Input
- Query
- Output
- Text
Built with mifi/lossless-cut. OpenToolVault provides the discovery and browser interface while crediting the original project maintainers.
- Built with
- License
- GPL-3.0
Open-source project
OpenToolVault is an independent directory. We are not affiliated with or endorsed by this project.
References
- / — GitHub Repository
Upstream project · GitHub
- GPL-3.0 License
Upstream project
Frequently asked
How does LosslessCut ensure lossless editing?
LosslessCut uses FFmpeg to copy video and audio data directly without re-encoding, preserving the original quality. When trimming, it extracts the desired segments from the source file and saves them as a new file, maintaining the original codec, bitrate, and resolution. This approach avoids quality degradation that occurs during re-encoding processes.
What formats does LosslessCut support?
LosslessCut supports common video formats like MP4, AVI, MKV, and MOV, as well as audio formats such as WAV, MP3, and FLAC. It also handles subtitle formats like SRT and ASS. Compatibility depends on the underlying FFmpeg version, which regularly updates to support new codecs and formats.
How do I trim a video file to remove the first 10 seconds?
1. Open the video file in LosslessCut. 2. Use the timeline to set the start time at 0:00:10. 3. Drag the end marker to the desired point. 4. Click 'Trim' to create a new file containing only the selected segment. The output file will retain the original quality and format.
How does LosslessCut compare to alternatives like FFmpeg or DaVinci Resolve?
LosslessCut is simpler than FFmpeg for basic lossless trimming but lacks its full scripting and advanced filtering capabilities. Unlike DaVinci Resolve, it focuses exclusively on lossless editing rather than comprehensive video authoring. It is ideal for users prioritizing speed and simplicity over complex post-production features.
What should I do if LosslessCut fails to load a file?
First, verify the file format is supported by checking the FFmpeg compatibility list. Ensure the file isn't corrupted by trying it in other media players. If the issue persists, update LosslessCut and FFmpeg to the latest versions. For specific error messages, consult the project's GitHub issue tracker or community forums.