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Batch Convert MOV to MP4 in Your Browser

Drop in MOV files, including HEVC iPhone clips, and get MP4s back in one pass.

  • Convert many MOV files to MP4 in one queue
  • Designed for both HEVC (iPhone) and H.264 sources
  • Resize and compress in the same pass to shrink large 4K clips
  • Optional audio removal
  • Download files individually or as a ZIP

Overview

A folder of MOV clips off an iPhone or a camera is the most common reason people look for a MOV-to-MP4 converter. The MOV container plays fine in QuickTime and Final Cut, but the rest of the world (Android, Windows Media Player, social uploaders, every browser) is happier with MP4. Converting before sharing usually saves a round of "this file won’t open" messages later.

Many recent iPhone videos use HEVC inside the MOV container, which can create compatibility issues outside Apple’s ecosystem. On older devices and many cameras, the codec inside is H.264. This tool is designed to convert common HEVC and H.264 MOV files into more widely compatible MP4 output.

You can resize and lower the quality preset in the same pass, which is useful when the clip is bound for chat or social rather than archive.

Technical notes

iPhone HEVC handling

Many iPhone HEVC MOV clips can be converted to MP4 in this tool. The result plays on Windows, Android, and older browsers without extra HEVC codecs.

Container vs codec

MOV and MP4 are sibling MPEG-4 containers. When the source is already in a browser-friendly format, conversion may preserve quality more closely than heavier recompression workflows.

Typical file size

Large 4K iPhone clips can often be reduced substantially at the balanced preset, though exact results depend on the source file and scene complexity.

Good to know

HEVC decode depends on the browser

HEVC iPhone footage decodes reliably in Safari 16.4+ and recent Chrome/Edge on devices with a hardware HEVC decoder. Older browsers or machines without HEVC support may fall back to a slower software path or fail.

Some HEVC variants may not decode

A small number of HEVC profiles (10-bit HDR, certain Dolby Vision tracks) are not yet supported by every browser. If a specific clip refuses to convert, try Chrome or Edge as a second option.

Very long single clips depend on memory

Hour-plus single clips need free RAM and disk during encoding. If a single huge file struggles, try dropping the output width or splitting the clip beforehand.

How to convert MOV to MP4 in bulk

Convert a folder of MOV files to MP4 in your browser without uploading anything.

01

Add your MOV files

Drag and drop one or many MOV files into the queue, or click to pick them.

02

Confirm the output preset

Output is preset to MP4. Pick a quality preset (balanced is a good default) and an optional width if the original is very large.

03

Start the batch

Click Convert files. Each file is processed locally in your browser.

04

Download MP4s

Download converted MP4 files individually, or grab the whole batch as a ZIP.

Frequently Asked Questions

Are my MOV files uploaded anywhere?

No. The converter runs in your browser via WebCodecs. Your MOV files stay on your device. There is no upload endpoint.

Will my HEVC iPhone footage convert?

In many cases, yes. Common HEVC iPhone clips can usually be converted in supported browsers, though some HDR or Dolby Vision variants remain browser-dependent.

Why not just rename .mov to .mp4?

Renaming sometimes works because both are MPEG-4 family containers, but it fails whenever the codec inside is not supported by the player. Converting through this tool produces an MP4 that is generally easier to play and share across devices.

Will I notice quality loss?

At the higher quality preset and the original width, the difference is usually invisible for typical viewing. The balanced preset is a good call for sharing; files shrink several times over with little visible quality drop.

What about the audio track?

AAC audio in the MOV is preserved as AAC in the MP4. You can also tick Remove audio to drop the audio track entirely.

Which browsers does this work in?

Conversion uses the WebCodecs API. Fully supported: desktop Chrome 94+, Edge 94+, Opera 80+, Firefox 130+, and Safari 26+. Safari 16.4 to 25 work for most files but some may fail because their WebCodecs implementation is partial. Browsers without WebCodecs (Chrome/Edge <94, Firefox <130, Safari ≤16.3, Internet Explorer) cannot run the converter at all. Mobile browser support is improving but inconsistent, so a desktop or laptop is recommended for batch work.

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