MOV to MP4 Converter
Convert MOV to MP4 free — no upload, no signup
To convert MOV to MP4, drop your MOV video into the box below and click Convert. Fylo converts with ffmpeg running inside your browser, so nothing is uploaded and there's no signup or watermark. iPhone MOVs are usually repackaged as MP4 in seconds, with no quality loss.
Drop videos here
or tap to browse · paste with Ctrl+V · add many at once
Your files never leave your device
If the video already uses codecs that fit the new format, Fylo repackages it instantly with no quality loss.
Advanced
How to convert MOV to MP4
Add your MOV videos
Drag and drop MOV files into the box or tap to choose them. The converter engine (about 31 MB) downloads once, the first time you convert.
Choose quality (optional)
Balanced quality suits most videos. If the codecs already fit MP4, Fylo repackages the file instead of re-encoding it, with no quality loss.
Convert and download
Click Convert, then download each MP4 file or all of them as one ZIP.
Why convert MOV to MP4?
iPhone videos and Mac screen recordings are MOV files, which some Windows apps, Android phones, websites and upload forms reject. MP4 plays everywhere.
What happens when you convert MOV to MP4?
iPhone MOVs contain H.264 or HEVC video with AAC audio — codecs MP4 supports — so Fylo copies the streams into an MP4 container instead of re-encoding. Quality and size don't change. HEVC videos stay HEVC, so very old Windows PCs may still need the HEVC extension; ProRes and other codecs are re-encoded to H.264.
How does Fylo convert MOV to MP4?
Fylo reads the MOV with ffmpeg compiled to WebAssembly and writes H.264 (x264, constant quality CRF 23) with AAC audio, plus the faststart flag for instant web playback. Most MOV files already contain H.264 video, so Fylo usually copies the video without re-encoding (and converts only the audio if needed), which is fast and lossless. Only the first video and audio track are kept, and the original resolution is preserved unless you pick 1080p, 720p or 480p under Advanced.
What's the difference between MOV and MP4?
MOV is the QuickTime File Format that Apple introduced in 1991. MP4 was later standardised on the same structure, so the two are close relatives. iPhones record MOV files (usually H.264 or HEVC video with AAC audio), and professional cameras and editors use MOV for high-quality ProRes footage.
MP4 (MPEG-4 Part 14) is a container format standardised in 2001 and based on Apple's QuickTime file structure. A container holds separately compressed video and audio streams plus metadata such as subtitles, chapters and cover art. Most MP4s use H.264 video and AAC audio; newer files may use H.265 (HEVC) or AV1.
Learn more: MOV format guide · MP4 format guide
| Property | MOV | MP4 |
|---|---|---|
| Developed by | Apple | MPEG (ISO/IEC 14496-14) |
| Introduced | 1991 | 2001 |
| Typical video codecs | H.264, HEVC, ProRes | H.264, H.265/HEVC, AV1 |
| Typical audio codecs | AAC, PCM | AAC, MP3 |
| Plays in web browsers | Partly (Safari; others only if H.264) | Yes — every browser |
| Compatibility | Apple devices, editors; limited on Windows and Android | Universal: phones, TVs, editors, social media |
| Best for | iPhone videos, professional editing (ProRes) | Sharing, uploading, streaming, editing |
Frequently asked questions
Does converting MOV to MP4 lose quality?
Not when the video is repackaged, which is the case for nearly all iPhone and Mac recordings.
Why is my iPhone MP4 still HEVC?
Fylo keeps the original stream to avoid quality loss. If a device can't play HEVC, use Compress Video, which re-encodes to H.264.
Is my MOV file uploaded to a server?
No. Fylo runs ffmpeg, the same engine used by professional video tools, compiled to WebAssembly inside your browser. Your MOV file is read directly from your device and never sent anywhere.
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