Show HN: FFmpeg WebCLI – Full FFmpeg in Browser, Offline PWA, No Uploads(WASM)
A browser-based video editor powered by ffmpeg.wasm . No uploads, no servers -- all processing happens locally in your browser using WebAssembly.
🚀 Live app: https://tejaswigowda.com/ffmpeg-webCLI/
Convert any video clip into an animated GIF. Set the frame rate and output width; height scales automatically to preserve the aspect ratio. Uses a two-pass palette generation for the best possible color quality.
Re-encode a video to a different container and codec:
Reduce file size without changing the resolution. Dial in the quality with a CRF slider (18 = near-lossless → 51 = maximum compression) and pick an encoding preset (ultrafast → veryslow) to trade encoding speed for compression efficiency. A live size estimate updates as you adjust the settings.
Set a start and end point with the timeline sliders before running any operation. Trimming is applied on top of every other operation, so you can, for example, extract a short clip, compress it, and convert it to GIF all at once.