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How-To Guide

How to Convert MOV to MP4 on Mac

MOV is Apple's native video format — iPhones record in MOV, QuickTime uses MOV, and Screen Recording on Mac creates MOV files. Converting MOV to MP4 on Mac is needed for sharing with Windows users, uploading to platforms that prefer MP4, or using with video editors that prefer H.264 MP4. Mac has several built-in conversion methods.

Open MOV to MP4 Converter

Step-by-step instructions

  1. 1

    Method 1: QuickTime Player (built-in, free)

    Open the MOV in QuickTime Player → File → Export As → choose 1080p (or 4K, 720p depending on source). QuickTime exports as M4V which plays as MP4. To get a true .mp4 extension: rename the M4V file to .mp4 — they're the same container format. This method re-encodes the video.

    Go to converter
  2. 2

    Method 2: Browser converter (no quality loss for compatible codecs)

    Go to formatdrop.com → Video Converter. Drop your MOV file. Select MP4 output. Download. For iPhone MOV files with H.264 or H.265 video and AAC audio, the conversion can be a fast remux with no quality loss.

  3. 3

    Method 3: FFmpeg via Terminal (fastest, lossless)

    Open Terminal → run: ffmpeg -i input.mov -c copy output.mp4. The '-c copy' remuxes without re-encoding — completes in 1-5 seconds for any file size. For iPhone 4K HEVC MOV: the same command works since MP4 can contain HEVC. If you need H.264 output specifically: ffmpeg -i input.mov -c:v libx264 -crf 18 -c:a aac output.mp4

  4. 4

    Method 4: Compressor (Pro option)

    Apple Compressor ($49.99) is the professional conversion tool on Mac. Open MOV → add to job → choose H.264 or HEVC output setting → Submit. Compressor uses hardware acceleration and produces the highest quality output. Worth it if you regularly convert video for distribution.

Why convert MOV to MP4?

MOV and MP4 are very similar containers — both derived from Apple's QuickTime file format. They can contain the same video and audio codecs (H.264, H.265, AAC). The practical difference is in ecosystem compatibility: MP4 plays on every platform and device without exception, while MOV has weaker support on Windows and Android. Converting MOV to MP4 on Mac is often just changing the container without touching the video data.

Your files never leave your device

FormatDrop runs the conversion engine entirely inside your browser using WebAssembly. No file upload. No server. Nothing stored. You can verify this by opening DevTools → Network tab and watching: zero upload requests.

Frequently asked questions

Does converting MOV to MP4 on Mac reduce video quality?
If you remux with 'c copy' in FFmpeg: zero quality loss — the video data is identical. If you use QuickTime's Export function: it re-encodes, causing a small quality loss. The difference is usually undetectable. For important footage: use FFmpeg remux (0 quality loss). For casual sharing: QuickTime export is fine.
Why does my iPhone record in MOV instead of MP4?
iPhone default recording format is either HEVC (.mov) or H.264 (.mov) depending on your settings. Go to Settings → Camera → Formats to change: 'High Efficiency' = HEVC MOV, 'Most Compatible' = H.264 MOV. Both use the MOV container. To record in MP4: there's no native option — iPhone always uses MOV. Convert after recording if MP4 is needed.
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