LosslessCut

Most video editors re-encode your footage every time you make a cut. That process can take hours and degrades quality with each pass. LosslessCut skips re-encoding entirely. It cuts the data stream directly, so trimming a large file takes seconds instead of hours, and the output is bit-for-bit identical to the source.

It runs on macOS, Windows, and Linux, and handles a wide range of formats thanks to FFmpeg doing the heavy lifting underneath. The interface is built around a timeline with zoom, frame jumping, and keyframe jumping, so you can navigate precisely without touching the command line.

Key capabilities include:

• Lossless trimming and cutting of video and audio files, with labeled segments and CSV export/import for edit decision lists
• Merge and concatenate multiple files with identical codec parameters, no re-encoding required
• Stream editing: pull tracks from multiple files and combine them into one output
• Remux into any compatible container format, such as converting an MKV to MP4 or TS to MOV
• Extract tracks individually, whether that's audio, video, or subtitles
• Full-resolution snapshots exported as JPEG or PNG
• Audio waveform and video thumbnails in the timeline for easier orientation
• Rotation/orientation metadata editing for fixing phone recordings with the wrong flag

One important caveat: cuts are aligned to the nearest preceding keyframe, not to the exact frame you select. For most use cases (removing commercials, trimming intros, splitting long recordings) this is fine. For frame-perfect editing, a re-encoding editor like Kdenlive or Shotcut would be more appropriate.

The app is free to download from GitHub. Paid versions are available through the Mac App Store and Microsoft Store for users who want signed binaries and automatic updates, or who want to support the developer.