视频不上传也能剪：截取、等分、取封面、静音Editing video without uploading — trim, split, grab a frame, mute
想留孩子说的一句话、想把会议结论那三分钟单独发给同事，打开剪辑软件太重，找在线工具又要先上传。其实这四件事在浏览器里就能做完。Keep the one funny line your kid said, send the three minutes of conclusions to a colleague — a full editor is too heavy, and online tools want an upload first. These four jobs can be done in the browser.