FlowCaptions

Video Converter

In-browser

Browser-based video conversion using ffmpeg.wasm. Re-encode, trim, change format, or export with platform-perfect dimensions for Instagram Reels, YouTube Shorts and TikTok.

100% private — runs in your browser No upload Unlimited free use

Browser not supported

Video conversion needs a modern browser with WebAssembly (Chrome, Edge, or Firefox over HTTPS).

Drop video here, or click to browse

MP4 · MOV · WebM · AVI · MKV — up to 500MB. 100% local processing.


        


        
        

        
Runs entirely in your browser. The first conversion downloads a one-time engine (cached after that). Your files never leave your device.

    


    
    
    







    

        

            

                
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