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Video Converter

Convert common videos to MP4, WebM, or MOV without an upload.

FFmpeg.wasm · Web Worker

The ~32 MB single-thread core downloads only when processing begins and is browser-cached. It has fewer codecs than desktop FFmpeg, and speed depends on your CPU and memory.

GUIDE

Choosing MP4, WebM, or MOV

MP4 with H.264/AAC has the broadest compatibility. WebM with VP9/Opus suits modern browsers. MOV is common in Apple and editing workflows. Conversion re-encodes media and takes time.

FFmpeg.wasm ships a fixed codec set. Rare, DRM-protected, or damaged files may not decode; the UI keeps a useful error and suggests another format.

  1. 01

    Choose a source

    Select a common MP4, MOV, WebM, MKV, or AVI file.

  2. 02

    Choose output

    Pick MP4 for compatibility or WebM for modern web delivery.

  3. 03

    Convert

    Wait for the Worker and preview before downloading.