FileopiaConvert MP4 to MOV
Convert MP4 to MOV free in your browser. Lossless re-wrap when possible, hardware encoding otherwise. No upload, no watermark, no size paywall.
- Upload
- Options
- Download
- ✓ 100% free
- ✓ No sign-up
- ✓ No limits
- 🔒 Files never leave your device
How to: MP4 to MOV Converter
- Select one or more MP4 videos.
- Keep MOV and “Keep” resolution for the fastest, lossless result, or pick a smaller size.
- Click Start and download your video.
MP4 is the universal video container that plays on every phone, TV, browser and editor. MOV is Apple’s QuickTime container used by iPhones, Macs and many cameras. Converting lets you play, edit or upload the video anywhere – and Fileopia does it without uploading gigabytes to a server.
Common uses
- Make MP4 recordings play on TVs, phones and editors that expect MOV.
- Upload videos to sites that reject your current format.
- Re-wrap camera or screen recordings without losing quality.
- Batch convert a folder of clips.
Tips for best results
- Leave resolution on Keep and quality High for a fast, lossless re-wrap when possible.
- Plug in your laptop – hardware encoding is faster on mains power.
- Use Trim Video first if you only need part of the clip.
How it works
Fileopia reads the MP4 container with Mediabunny (MPL-2.0) and, when the video is already H.264/H.265 and the audio AAC, simply re-wraps the streams into MOV without re-encoding – lossless and many times faster than real time. Otherwise it re-encodes with your browser’s hardware WebCodecs encoder.
Honest limits
Files are processed in memory, so practical size is about 1–2 GB on desktop and 300–500 MB on phones. AVI, WMV and FLV inputs are not supported. Chrome, Edge and Safari 16.4+ have the required WebCodecs; Firefox 130+ works for most files.
Compared with other converters
CloudConvert, Convertio and FreeConvert upload your file, cap free use (often 1 GB or a few conversions per day) and queue jobs. Here conversion starts instantly, offline, with no account.
Why use Fileopia for MP4 to MOV Converter?
| Fileopia | Typical upload-based sites | |
|---|---|---|
| Files uploaded to a server | No – processed on your device | Yes |
| Sign-up required | Never | Often for bigger jobs |
| Hourly / daily task limits | None | Common on free plans |
| Watermark on output | Never | Sometimes |
| Works offline after loading | Yes, for most tools | No |
Your files never leave your device
MP4 to MOV Converter runs entirely in your browser using JavaScript and WebAssembly. Your files are read from your disk into this tab, processed in memory and saved straight back to your downloads folder – they are never uploaded to Fileopia or any third party.
- Test it yourself: once this page has loaded, switch off Wi‑Fi or mobile data and run the tool – it keeps working.
- Check the network: open your browser’s developer tools (F12 → Network) while processing; you will see no file upload requests.
- Nothing to delete: close the tab and the data is gone – there is no server copy, no retention period and no account.
Frequently asked questions
Is MP4 to MOV conversion lossless?
When the codecs are compatible, yes – the streams are copied without re-encoding.
Are my videos uploaded?
No. Everything runs on your device with WebCodecs; nothing is sent to a server.
Is there a size limit?
Files are processed in memory, so practical size is about 1–2 GB on desktop and 300–500 MB on phones. AVI, WMV and FLV inputs are not supported. Chrome, Edge and Safari 16.4+ have the required WebCodecs; Firefox 130+ works for most files.
Is there a watermark?
Never. No sign-up, no watermark and no daily limits.
Can I make the file smaller at the same time?
Yes – choose 1080p, 720p or 480p and a lower quality level, or use Compress Video.
Why does my browser say it cannot encode?
Some browsers lack certain encoders (e.g. H.264 on Linux Chromium builds). Try Chrome or Edge, or pick WebM output.
Does it keep subtitles and multiple audio tracks?
The primary video and audio tracks are converted; extra subtitle tracks are dropped.
Does it work on iPhone?
Yes on iOS 16.4+ in Safari, for files up to a few hundred MB.
Is MP4 to MOV Converter really free?
Yes. Every tool on Fileopia is 100% free with no file limits, no sign-up and no watermarks. The site is supported by unobtrusive ads.
Are my files uploaded to a server?
No. Fileopia processes your files directly in your browser using JavaScript. Your documents never leave your device, so they stay completely private.
Does it work on mobile?
Yes. Fileopia works in any modern browser on Android, iPhone, iPad, Windows, Mac and Linux.