Is the FLV to MP4 converter free?

Yes — Morphix's FLV to MP4 converter is 100% free with no sign-up, watermarks, or file-size limits beyond your device's memory.

Are my FLV files uploaded to a server?

No. Conversion runs entirely in your browser using WebAssembly — your FLV files never leave your device.

Does it work offline?

Yes. After the first visit, the FLV to MP4 converter works fully offline.

Back to Morphix File Converter

FLV → MP4

FLV to MP4 Converter

Convert legacy Flash FLV video into modern, playable MP4.

Drop files here

or browse from your device

images · audio · video · documents · archives · up to ~500MB

100% Private

Runs in your browser. No upload.

Instant

No queue, no server roundtrip.

Offline-ready

Works after first load.

Why convert FLV to MP4?

Flash is dead and FLV files no longer open in browsers or on phones. Remuxing to MP4 with H.264 makes archived footage playable again everywhere without re-shooting anything.

How it works

Drop your FLV file above and Morphix decodes it locally, then re-encodes it as MP4 using WebAssembly + the browser's native codecs. Nothing is ever uploaded — your files stay on your device. Batch as many files as your machine can handle.

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