Video Toolkit
Convert, compress, and trim videos — entirely in your browser via FFmpeg WebAssembly. No upload, 100% private.
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Frequently Asked Questions
Are my videos uploaded to a server?↓
No. All three tools run FFmpeg compiled to WebAssembly inside your browser, so your video is processed on your own device and never uploaded. Only the FFmpeg engine itself is downloaded the first time you use a tool.
Which video formats are supported?↓
You can open common formats including MP4, WebM, MOV, AVI and MKV. The compressor and trimmer output MP4 (the compressor re-encodes to H.264), and the converter outputs an animated GIF.
What is the difference between fast cut and precise cut when trimming?↓
Fast cut copies the video stream without re-encoding, so it is nearly instant and keeps the original quality, but the cut may snap to the nearest keyframe. Precise cut re-encodes the video so the start and end are frame-accurate, which takes longer.
Why does processing take longer than desktop software?↓
Browser-based FFmpeg runs in a single thread on your device, without the hardware acceleration desktop apps use. Processing time depends on the video's length, resolution and your device speed; shorter clips or a lower output resolution finish faster.
How do I make a GIF from a video?↓
Open the Video → GIF tab, select your video, set the start and end times (clips up to 30 seconds), choose the frame rate and width, then click Convert to GIF. A lower frame rate and smaller width produce a much smaller GIF file.
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