UltConvert

MOV to MP4 Converter

Turn the MOV clips from your iPhone, Mac or camera into MP4 files with H.264 video, the combination that Windows, Android, smart TVs and upload forms all play without extra software.

Video Converter

or drag MP4, MOV, MKV … files here ·

Up to 95 MB each· 20 files at once· Removed after 30 min

Output

Your files are removed from our servers 30 minutes after processing.

Files are deleted 30 minutes after processingPrivacy policy

Why convert MOV to MP4 at all?

Because an iPhone MOV usually holds HEVC video, which many Windows PCs, TVs and websites cannot play. The MP4 you get here holds H.264, which practically everything plays.

Output
MP4
Video codec
H.264
Audio
AAC

Where MOV files come from

MOV is Apple's QuickTime movie format, and it is what an iPhone, an iPad and the Mac's screen recorder save by default. Many mirrorless cameras and video editors also export MOV. On Apple devices the files simply play, so the format only becomes a problem when the video leaves that world: a colleague on Windows, a school portal, a TV that reads a USB stick, or an Android phone in the family chat.

The container is rarely the real issue, though. Since iOS 11, iPhones record video in HEVC, also called H.265, which stores the same picture in less space than the older H.264 codec. Apple's HEIF and HEVC support page describes the saving and also notes that support for HEVC on older devices depends on resolution and frame rate. A computer, TV or website without an HEVC decoder shows a black screen, only plays the sound, or refuses the upload.

Converting to MP4 with H.264 fixes both sides at once: the container becomes the most widely supported one, and the video inside uses the codec that almost every device has been able to decode for well over a decade.

QuickTime MOV and MP4 compared

MOV

MOV video

Apple's QuickTime movie container, first released in 1991. It can hold lossy footage such as iPhone recordings or high-quality ProRes masters, and some codecs inside it support transparency. Macs and editing software handle it well; some Windows players and websites accept MP4 more readily.

  • Lossy or lossless
  • Transparency
  • Vendor format

MP4

MP4 video

The MPEG-4 Part 14 container, standardized in 2001 and now the default for online video. It usually carries H.264 or HEVC video with AAC audio, all lossy, plus optional subtitles. Phones, browsers, smart TVs and social platforms all play it.

  • Lossy
  • Open standard

Why convertYou give up an Apple-centric container, and often HEVC compression, for the MP4 and H.264 pairing that plays on almost anything. Convert in this direction whenever an iPhone video has to work on Windows, Android, a TV or a website.

MOV and MP4 are close relatives. The MP4 file format was based on Apple's QuickTime design, as MDN's guide to media containers explains, and both can hold the same kinds of video and audio. The difference is in who supports what: MP4 is an ISO standard that every browser, phone and smart TV reads, while MOV support outside Apple software varies.

Because the video is re-encoded to H.264, expect the MP4 to be somewhat larger than an HEVC original of the same length. That is the price of compatibility. If the size matters more, lower Resolution to 1080p, which is usually plenty for a phone screen or a laptop, or run the result through the Compress Video tool.

How MP4 became the default

MP4 milestones

  1. Specification

    ISO/IEC 14496-14 (MP4 file format)

    Source
  2. Specification

    IETF RFC 4337 (video/mp4)

    Source

MP4 was standardized by ISO as part of MPEG-4 and later registered as the video/mp4 media type. That combination of an international standard and a registered web type is why upload forms, video players and social networks list MP4 first. When a service says it accepts video, MP4 with H.264 is the safest thing to give it.

MOV has its own published specification, Apple's QuickTime File Format reference, and it remains a strong choice inside Final Cut Pro and other editing tools, where it can carry professional codecs. For sharing a finished clip, though, the wider support of MP4 usually wins.

Settings that matter for iPhone clips

The defaults suit most clips. Codec is fixed to H.264 because that is the reason most people convert. Resolution stays at the recorded size, so a 4K video stays 4K. Frame rate stays as recorded too, which keeps slow-motion and 60 fps clips smooth.

Two options are worth knowing. Start at and End at under Trim cut the clip while converting, which saves a separate step when you only need a moment from a long recording. Remove audio drops the sound track for background loops or silent clips. Changing only those leaves the picture quality untouched.

Converting a batch of videos

Converting on the computer that holds the clips is usually the quickest route. On a Mac, AirDrop or the Photos export puts the original MOV files in a folder; on Windows, the iCloud Photos app or a cable import does the same. Drop that folder's files here in one go.

Add up to 20 MOV files at once, each up to 95 MB, and download the MP4s individually or together. Uploaded files are removed after processing and the converted videos 30 minutes later, with no account needed. For other targets, such as WebM for a website or GIF for a short loop, the Video Converter has every format in one place, and MOV to MP3 keeps only the sound when that is all you need.

How to convert MOV to MP4

  1. Add your MOV files

    Drop up to 20 .mov clips on the box above, or press Choose Files and pick them from Photos, Files or a folder.

  2. Keep the MP4 settings

    MP4 with the H.264 codec is preset. Open Advanced settings only to lower the resolution or trim the clip.

  3. Convert and download

    Press Convert and save the MP4 files one by one or all together.

MOV to MP4 questions

Why won't my iPhone video play on Windows?

Recent iPhones record in HEVC (H.265) inside a MOV file. Windows needs an extra codec for HEVC, and many older players and TVs cannot decode it at all. Converting to MP4 with H.264 removes that dependency.

Does converting MOV to MP4 lower the quality?

The video is encoded again, so it is not bit-for-bit identical, but at the default quality setting the difference is not visible in normal viewing. Keep Resolution on Same as source to avoid any loss of detail.

Would changing the extension from .mov to .mp4 be enough?

Sometimes that plays, because the two containers are closely related, but the video inside is still HEVC if that is what the iPhone recorded, and strict upload checks may reject the file. Converting writes a real MP4 with H.264.

Will the MP4 keep the sound?

Yes. The audio track is kept and stored as AAC, which every device that plays MP4 understands. Tick Remove audio only if you want a silent clip.

How do I make my iPhone record MP4-friendly video in the first place?

Apple's support page explains that Settings → Camera → Formats → Most Compatible makes the camera record H.264 instead of HEVC. The files are still MOV, but they play much more widely.

My MOV is larger than 95 MB. What can I do?

Trim it with the Trim Video tool or lower its size with Compress Video first, then convert. Lowering Resolution to 1080p or 720p here also gives a much smaller MP4.

Is a 4K or 60 fps MOV converted at full quality?

Yes. The resolution and frame rate stay as recorded unless you change them, so a 4K clip comes out as 4K. Choose 1080p if the video only needs to play on a phone or a laptop screen.

From the blog