MOV to MP4 Converter for iPhone & QuickTime Videos
Convert MOV to MP4 without re-encoding. iPhone and QuickTime videos already hold H.264 or HEVC, which an MP4 carries as-is, so ProMedia only swaps the container: the picture stays bit-for-bit identical, long clips finish in seconds and the file never leaves your device. ProRes and other editing codecs are the exception and are converted to H.264.
- Runs on your device
- WebCodecs · GPU
- FFmpeg
- Works offline
Updated
Drop your videos here
How to convert MOV to MP4
Step 1: Drop your MOV files on the box above. On an iPhone, tap it and choose Photo Library or Choose Files.
Step 2: Leave Quality on Balanced. It only applies to ProRes or other tracks that cannot be copied.
Step 3: Press Convert. H.264 and HEVC video is copied; uncompressed PCM audio becomes AAC.
Step 4: Download the MP4 files one at a time or as a single ZIP.
Good to know
Settings explained
- Quality
- Only used when a stream has to be re-encoded. Compatible streams are copied with no quality loss.
- Faster: Smaller file, quickest export
- Balanced: Good quality at a sensible size
- Best quality: Largest file, slowest export
- Video codec
- Automatic copies the original video stream when the new format can hold it, so there is no quality loss.
- Automatic: Best codec the format and your device support
- H.264 (AVC): Plays everywhere
- H.265 (HEVC): About 35% smaller, newer devices
- VP9: Web / WebM
- AV1: Smallest files, slowest to encode
- Always re-encode
- Off: compatible streams are copied instantly and losslessly. On: every stream is re-encoded, which can fix playback glitches.
Formats
Batch-friendly: add many files and they are processed one after another — if one fails, the rest still finish.
How it runs
- Hardware video engine
- Video is decoded and encoded by your device’s media hardware through WebCodecs — usually several times faster than real time.
- FFmpeg (when needed)
- Older formats and a few filters use FFmpeg compiled to WebAssembly. It downloads once (about 31 MB) the first time it is needed and is cached for offline use.
MOV vs MP4: which is better?
Neither is better for quality. Both are containers, and an iPhone clip holds the same H.264 or HEVC stream in either one. MP4 wins on compatibility outside Apple’s apps; MOV wins in professional Mac workflows because it can hold ProRes. MP4 was built on the QuickTime file structure, which is why the switch is so quick.
| Feature | MOV (QuickTime) | MP4 (MPEG-4 Part 14) |
|---|---|---|
| Who defines it | Apple, for QuickTime | ISO standard derived from the QuickTime format |
| Video ProMedia can copy into it | H.264, HEVC, AV1, VP9, ProRes | H.264, HEVC, AV1, VP9 |
| Typical audio | AAC; PCM from pro cameras and editors | AAC |
| Plays on Windows, Android and most TVs | Not always | Yes |
| Accepted by upload forms and web players | Often | Almost always |
| Best for | Editing on a Mac, ProRes masters | Sharing, uploading and playing anywhere |
What is a MOV file?
A MOV file is a QuickTime movie, Apple’s container for video, audio, timecode and metadata tracks. iPhones, iPads and Macs save to it by default. An iPhone MOV holds HEVC video when the camera is set to High Efficiency and H.264 when it is set to Most Compatible, almost always with AAC audio.
Professional cameras and Mac editing apps can also write MOV with ProRes video or uncompressed PCM audio. Those files edit smoothly but are very large, and players outside the Apple world often refuse them.
Does converting MOV to MP4 lose quality?
No, not for iPhone and most camera clips. H.264 and HEVC video is copied into the MP4 untouched and AAC audio is copied too, so the output is the same recording in a different box. Re-encoding happens only for tracks the MP4 cannot hold, and the result card tells you when it did.
| Track in your MOV | In the MP4 | Quality |
|---|---|---|
| HEVC (H.265) from an iPhone set to High Efficiency | Copied | Identical |
| H.264 from Most Compatible mode, older iPhones and cameras | Copied | Identical |
| ProRes video | Re-encoded to H.264 | Close to the original at Best quality; far smaller file |
| AAC audio | Copied | Identical |
| PCM (uncompressed) audio | Converted to AAC | Clean at normal listening |
| Timecode, location and other metadata tracks | May be dropped | No effect on picture or sound |
Should I convert MOV to MP4?
Convert when the video has to leave the Apple world: a Windows PC, an Android phone, a smart TV, a web form or an editor that rejects .mov. Keep the MOV when you only watch and edit on a Mac or iPhone, or when it holds ProRes you still plan to colour-grade, because ProRes cannot stay ProRes inside an MP4.
If both apps in your workflow accept MOV, converting gains nothing. Most social apps take either format, so posting alone is rarely a reason.
Why convert MOV to MP4 with ProMedia
- Large clips are fine. A 4K recording of several gigabytes is read from disk in chunks. There is no upload to wait for and no 1 GB cap to hit.
- Seconds, not minutes. Copying H.264 or HEVC takes about as long as reading the file, so a ten-minute clip does not mean a ten-minute wait.
- A whole camera roll at once. Drop dozens of MOVs, get dozens of MP4s, then download them as one ZIP.
- Family videos stay private. The conversion happens on your phone or computer; no server ever sees the footage.
Convert MOV to MP4 on iPhone, Mac, Windows or Android
The steps above work in any recent browser. Here is what differs on each device.
iPhone and iPad
Open this page in Safari, tap the drop zone and choose Photo Library to pick clips from Photos. Save the MP4s to Files or pass them on through the share sheet. Very long 4K clips are easier on a computer, which has more memory.
Mac
QuickTime Player’s File → Export As writes another .mov, not an MP4. Drag the files from Finder or Photos into Safari or Chrome here instead; the MP4 opens in QuickTime, Photos and iMovie.
Windows 10 and 11
Drag MOV files from File Explorer into Chrome, Edge or Firefox. If Windows then asks for HEVC Video Extensions to play the MP4, the clip is HEVC; make an H.264 copy with HEVC to H.264.
Android
Got iPhone videos as .mov attachments? Open this page in Chrome, tap the drop zone, pick them from Downloads and convert. The MP4s are saved to Downloads and show up in your gallery.
Tips & troubleshooting
Want future iPhone clips to play everywhere? Settings → Camera → Formats → Most Compatible records H.264 instead of HEVC. Files are larger, but no conversion is needed.
Need the MP4 smaller for email or chat? Remuxing keeps the original size, so follow up with the video compressor.
Going the other way for iMovie or Final Cut? Use MP4 to MOV, which re-wraps just as losslessly.
If the MP4 stutters on an old TV, switch on Always re-encode under Advanced settings to get a fresh H.264 stream.
Only want the sound of a concert clip or a talk? MOV to MP3 skips the video entirely.
MOV to MP4 Converter FAQ
Does converting MOV to MP4 lose quality?
Not for H.264 or HEVC video, which covers practically every iPhone and camera clip. Those streams are copied, so the MP4 is identical frame for frame. Only ProRes video and PCM audio are re-encoded, because the MP4 output takes neither as it is.
Can you convert MOV to MP4 in QuickTime?
Not directly. QuickTime Player’s Export As saves another MOV, even when it changes the resolution. Renaming .mov to .mp4 sometimes plays because the formats share a structure, but it is not a real conversion and some apps reject it. Converting here re-wraps the streams properly.
How do I convert a large MOV to MP4 for free?
Use a desktop browser and drop the file here. Nothing is uploaded, so there is no 1 GB or 4 GB cap and no queue; the streams are copied from your disk into a new MP4 at the speed of your drive. No watermark, no account.
MOV vs MP4 for Instagram: which should I upload?
Either works for posting: Instagram accepts both, and an iPhone clip carries the same H.264 or HEVC stream in each. Convert to MP4 when another step in your workflow, such as a Windows editor, refuses the .mov file.
How do I convert MOV to MP4 on iPhone?
Open this page in Safari, tap the drop zone, choose Photo Library and select the clips. Press Convert, then save the MP4s to Files or share them. Everything runs on the iPhone; the clips are not uploaded.
Why does my iPhone MP4 still not play on Windows?
Because the video inside is HEVC, and the conversion kept it. Windows needs Microsoft’s HEVC Video Extensions to decode it. Re-encode it once with the HEVC to H.264 converter, or switch the iPhone camera to Most Compatible for future clips.
Is there a file size limit?
There is no upload limit because there is no upload. Videos are read in chunks straight from disk, so multi-gigabyte files work on desktop computers; phones are limited by their memory. There are no daily caps and no watermark.