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Video Format Konverter

MP4, WebM, MOV, AVI, MKV — all directions.

Runs in your browser

Drop a file or click to browse

MP4, WebM, MOV, AVI, MKV — re-encoded with sensible defaults

FFmpeg.wasm runs entirely in your browser. The first use downloads ~30 MB of engine — cached for every subsequent run.

Anmerkung der Redaktion

Understanding · Containers, codecs, and three numbers that matter.

Dieses ausführliche Kapitel ist derzeit nur auf Englisch verfügbar. Das Konvertierungstool oben funktioniert in Ihrer Sprache; der lange Erklärtext wurde noch nicht übersetzt.

Häufig gestellte Fragen

Quick answers.

Is my video uploaded to a server?

No. The conversion happens locally on your computer using your browser's resources, so your video data never leaves your device.

Which video formats are supported?

We support most standard containers including MP4, WebM, MOV, AVI, and MKV, along with common codecs like H.264 and VP9.

What is the maximum file size?

The limit depends on your system's available RAM, as the entire conversion process runs within the browser's memory environment.

Will I lose quality during conversion?

Transcoding often involves some loss of data. Use a high-bitrate setting or high-quality preset to minimise visible artifacts in the output file.

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