MOV to MP4 Converter
Turn QuickTime MOV files — including iPhone recordings and ProRes exports — into MP4 that plays anywhere.
Convert with this tool
or choose a file from your device — it is processed in this tab and never uploaded
Accepted: MOV (QuickTime), including iPhone HEVC recordings and ProRes 422/4444
Files stay on your device. There is no upload, no queue and no watermark, so a conversion works even with the network switched off after the page has loaded.
Supported formats & processing
| Accepted input | MOV (QuickTime), including iPhone HEVC recordings and ProRes 422/4444 |
|---|---|
| Produced output | MP4 with H.264 video and AAC audio |
| Processing | FFmpeg.wasm (video engine, downloaded on first use) |
| Upload required | No — the file is read locally and never transmitted |
How to use this tool
- Add the .mov fileLarge ProRes files take longer to read because of their size.
- Leave the quality slider at CRF 23ProRes sources have plenty of information, so a moderate CRF looks excellent.
- Downscale ProRes footageProRes is often 4K; 1920 or 1280 px wide is plenty for delivery.
- ConvertRe-encoding from ProRes takes longer than from a compressed source.
- Download the MP4The size difference from the original is reported in the result card.
About this tool
MOV is Apple's QuickTime container. iPhones record into it, macOS screen recordings use it, and professional workflows use it to carry ProRes, which is an editing codec with a very high data rate that consumer players cannot handle.
Converting to MP4 solves the compatibility problem in one step. This tool re-encodes the video to H.264, which every device understands, and normalises the pixel format to yuv420p so nothing refuses it. If your MOV came from an iPhone it will already be H.264 or HEVC inside — the conversion re-wraps and normalises it.
Features
- Handles iPhone HEVC recordings and ProRes source files
- Normalises the pixel format so every player accepts the output
- Resolution downscaling for oversized ProRes masters
- Frame-rate conversion for slow-motion iPhone footage
- Optional audio removal for silent delivery versions
- No upload — ProRes files stay on your machine
Frequently asked questions
Why is my MOV file so large?
If it is ProRes, the codec stores far more data per frame than a delivery codec. A one-minute 4K ProRes file can exceed 5 GB. Converting to H.264 will reduce it by an order of magnitude.
Will I lose quality converting ProRes to H.264?
There is always some loss with a lossy codec, but at CRF 18–23 the result is visually indistinguishable for normal viewing, and the file becomes manageable.
Does this work with iPhone HEVC videos?
Yes. HEVC decoding is handled by the FFmpeg engine and re-encoded to H.264, which is far more widely supported than HEVC.
Can I keep the audio exactly as it was?
The audio is re-encoded to AAC at your chosen bitrate. Stream copy is possible in principle, but mixing copied audio with re-encoded video often produces a file that players handle less reliably.