mifi/lossless-cut

LosslessCut is a desktop application that lets you cut, trim, and edit video and audio files extremely quickly without re-encoding the content. The problem it solves is that traditional video editors re-encode your video when you cut it, which is slow and degrades quality because the video gets compressed again. LosslessCut instead performs cuts and edits losslessly, meaning it rearranges the existing compressed data without recompressing it. A cut that would take minutes in a conventional editor takes seconds in LosslessCut. The application wraps FFmpeg, which is the powerful open-source multimedia processing library that does the actual work under the hood, and provides a graphical interface that makes it accessible without needing to use the command line. You can load a video, drag handles to set start and end points for segments you want to keep or discard, and export the result in a fraction of the time a re-encoding operation would take. It supports a wide range of video, audio, and subtitle file formats. Additional features include the ability to extract individual tracks from a file, merge multiple clips together, and work with chapters and metadata. You would use LosslessCut if you have recordings, screen captures, dashcam footage, or downloaded content that you want to trim or split quickly without waiting for re-encoding and without suffering quality loss from a second compression pass. It is available on Windows, macOS, and Linux. The tech stack is TypeScript and JavaScript, with React for the user interface, running as a cross-platform desktop app via Electron, and FFmpeg handling all the actual media processing underneath.