VidStudio is a free browser-based video editor that processes files locally without uploading, offering resize, trim, compress, watermark, subtitle and multi-track editing tools.
Hi HN,
I built VidStudio, a privacy focused video editor that runs in the browser. I tried to keep it as frictionless as possible, so there are no accounts and no uploads. Everything is persisted on your
machine.<p>Some of the features: multi-track timeline, frame accurate seek, MP4 export, audio, video, image, and text tracks, and a WebGL backed canvas where available. It also works on mobile.<p>Under the hood, WebCodecs handles frame decode for timeline playback and scrubbing, which is what makes seeking responsive since decode runs on the hardware decoder when the browser supports it.
FFmpeg compiled to WebAssembly handles final encode, format conversion, and anything WebCodecs does not cover. Rendering goes through Pixi.js on a WebGL canvas, with a software fallback when WebGL is
not available. Projects live in IndexedDB and the heavy work runs in Web Workers so the UI stays responsive during exports.<p>Happy to answer technical questions about the tradeoffs involved in keeping the whole pipeline client-side. Any feedback welcome.<p>Link: <a href="https://vidstudio.app/video-editor" rel="nofollow">https://vidstudio.app/video-editor</a>
# VidStudio - Free Online Video Resizer & Editor
Source: [https://vidstudio.app/video-editor](https://vidstudio.app/video-editor)
## Tools
Pick a tool to get started
[### Resize & Scale Resize video online for free\. Letterbox, crop, and format for YouTube, TikTok, Instagram & more\.](https://vidstudio.app/resize)[### Trim & Cut Trim clips, remove sections, and pull out exactly the segments you need\.](https://vidstudio.app/trim)[### Drop Zone Batch convert videos to a consistent MP4 format with professional encoding defaults\.](https://vidstudio.app/normalize)[### Compress Reduce file size with smart compression\. Target exact sizes for upload limits, or use quality presets\.](https://vidstudio.app/compress)[### Audio Processing Pull audio from video, convert, mix, and apply effects to audio\. Supports extraction, effects, and mixing workflows\.](https://vidstudio.app/audio)[### Thumbnails Extract frames, create storyboards, animated previews, and video sprites\.](https://vidstudio.app/thumbnails)[### Watermark Add image or text watermarks with positioning, transparency, timing, and movement effects\.](https://vidstudio.app/watermark)[### Video Editor Multi\-track video editor with source monitor, frame\-accurate seek, and WebCodecs decoding\.](https://vidstudio.app/video-editor)[### Subtitles & Text Add text overlays, burn\-in subtitles, extract tracks, and create animated text effects\.](https://vidstudio.app/subtitles)
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