MediaSeg
Split large media files without sacrificing quality
MediaSeg is a free macOS utility that splits large video and audio files into upload ready chunks while preserving media quality. Built for size limited workflows such as NotebookLM, it supports MP4, MOV, and WEBM, with experimental support for popular audio formats. All processing runs locally for greater privacy, while a clean interface, customizable themes, and multilingual support make preparing large media files fast and effortless.