MOV to MP4 Converter

Runs in your browser — your files are never uploaded.

Turn an Apple QuickTime .mov clip into a universally-playable MP4. OkConverter first tries a near-instant remux (repackaging the existing video/audio streams into an MP4 container with no quality loss); if the source codecs aren’t MP4-compatible, it automatically falls back to a full re-encode — all with a real copy of ffmpeg compiled to WebAssembly, running entirely in your browser.

OptionsResolution: Original

How to convert MOV to MP4

  1. 1

    Drop your MOV file onto the box, or click to choose one.

  2. 2

    OkConverter tries a fast remux first, re-encoding automatically only if needed.

  3. 3

    Click “Download” to save the MP4.

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Frequently asked questions

Will this lose quality?+

If a fast remux succeeds (common for iPhone-recorded MOV files, which are usually already H.264/AAC), there’s no quality loss at all — the video data itself is copied, not re-encoded. Only if a remux isn’t possible does it fall back to a re-encode.

Why does it sometimes take longer than expected?+

That means a remux wasn’t possible (the source uses codecs MP4 can’t hold directly) and it fell back to a full re-encode — slower, but still fully local.

Is my video uploaded anywhere?+

No. The one-time ~31 MB engine downloads once per session, but the video itself is never uploaded — every conversion happens on your device.

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