VIDEO EDITOR
Online video editor, edit locally, no uploads.
Convert to GIF, extract audio, compress, trim, remove watermark, merge clips, change speed, reverse, add text watermark, rotate & flip — powered by WebAssembly, first run loads the engine (~30MB, once).
Turn the first seconds of a video into a GIF.
Drop or choose a video
MP4 / WebM / MOV supported; up to ~300MB recommended
Drop or choose multiple videos
Concatenated in the order added; same format/resolution works best
Audio pitch changes with speed (no pitch correction in-browser).
Reverse the whole clip (video and audio); best for short clips.
Overlay text as a transparent layer (generated locally, no font upload).
Drag a rectangle over the watermark on the preview.
Read duration, resolution, size and format locally (no upload).
结果会显示在这里
Everything runs locally in your browser
What does this tool do?
It brings ffmpeg into your browser via WebAssembly, so you can convert to GIF, extract audio, compress, trim, remove watermark, merge clips, change speed, reverse, add a text watermark, and rotate/flip — all locally, no uploads.
常见问题
为什么要加载引擎？
视频处理依赖 ffmpeg，它以 WebAssembly 形式在浏览器运行，首次需下载约 30MB 引擎，之后会被浏览器缓存。
视频会上传吗？
不会。转码完全在当前浏览器内完成。
处理速度慢怎么办？
浏览器转码比原生软件慢，建议先用短视频尝试；大文件请耐心等待或分段处理。