To convert MOV to MP4, open the MobileStudio MOV to MP4 converter, drop in the file, and download the MP4. If the video inside is H.264, it converts in seconds with no quality loss, because the streams are just repackaged. If it's HEVC, which most iPhones record, the tool re-encodes it to H.264 so it plays on Windows, Android, and the web.
The short answer
| You're on | Easiest free way |
|---|---|
| Any device | MobileStudio MOV to MP4 in the browser |
| Mac | iMovie, File > Share > File (saves MP4) |
| Windows | VLC or HandBrake |
| iPhone | The browser converter in Safari |
| Command line | FFmpeg |
What's the difference between MOV and MP4?
Both are containers: boxes that hold video and audio. MOV is Apple's QuickTime format, and MP4 is the universal standard. The box is rarely the problem. What matters is the codec inside, usually H.264 or HEVC (H.265). For the full comparison, see MOV vs MP4.
How do I convert MOV to MP4 online for free?
- Open the MOV to MP4 converter on any phone or computer.
- Drop in the MOV file.
- Check the codec it shows. H.264 converts instantly. HEVC gives you two choices: Most compatible (H.264), or Keep HEVC, which is instant but won't play everywhere.
- Click Convert to MP4 and download the file.
The conversion runs in your browser, so the video never leaves your device. That matters for private footage, which many online converters upload to their servers.
How do I convert MOV to MP4 on a Mac?
QuickTime Player's Export As saves another MOV, not an MP4, so use iMovie or HandBrake:
- iMovie: add the clip to a project, choose File > Share > File, and save. iMovie exports MP4.
- HandBrake: open the MOV, pick a preset like Fast 1080p30, and click Start. The output is MP4 by default.
Full steps are in how to convert MOV to MP4 on Mac.
How do I convert MOV to MP4 on Windows?
VLC and HandBrake both work. In VLC, choose Media > Convert / Save, add the MOV, pick the Video - H.264 + MP3 (MP4) profile, and start. If the MOV is HEVC and won't even open, see why your iPhone video won't play on Windows.
Do I lose quality converting MOV to MP4?
Not if the video is already H.264. The streams are copied into the MP4 box untouched. HEVC converted to H.264 is re-encoded, which loses a tiny amount of detail at high quality settings, and the file gets bigger because H.264 is less efficient. Apple explains the formats in Using HEIF or HEVC media.
How do I stop my iPhone recording MOV files that won't play?
Go to Settings > Camera > Formats and choose Most Compatible. New videos are recorded in H.264, which converts to MP4 instantly and plays almost anywhere. The files are larger, though. Details are in how to change iPhone video format.
Can I convert MOV to MP4 with FFmpeg?
Yes. For an H.264 MOV, ffmpeg -i input.mov -c copy output.mp4 repackages it without re-encoding. For HEVC, re-encode with ffmpeg -i input.mov -c:v libx264 -crf 23 -c:a aac output.mp4. The FFmpeg documentation lists every option, and our FFmpeg guide explains which to use.
Where MobileStudio fits
The converter is one of our free tools. MobileStudio itself turns iPhone screen recordings into polished app demos with device frames and zooms. Get MobileStudio.
Quick FAQ
Is MOV to MP4 conversion free?
Yes. The MobileStudio converter, VLC, HandBrake, and FFmpeg are all free.
Can I just rename .mov to .mp4?
Sometimes it plays, if the video is H.264, but it's not a real conversion and some apps reject it. Convert properly instead.
Why is my MP4 bigger than the MOV?
The MOV was HEVC and the MP4 is H.264, which needs more data for the same quality.
How long does converting MOV to MP4 take?
Seconds for H.264. HEVC takes roughly as long as the video plays, or less on a fast computer.
Does converting MOV to MP4 keep the sound?
Yes. The audio is kept, and converted to AAC if needed.
