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How to Reduce MOV File Size on Mac (Quick & Easy)

3 min read
How to Reduce MOV File Size on Mac (Quick & Easy)

You took a bunch of videos on vacation. You AirDrop them to your Mac. You check the folder size: 47GB. Your 256GB MacBook just had a panic attack.

The culprit: MOV files from your iPhone. And if you accidentally had ProRes enabled in your camera settings... that explains a lot.

Why Are MOV Files So Large?

MOV is Apple's container format. The size depends entirely on what's inside it:

  • H.264 (older iPhones): ~130MB per minute of 4K
  • HEVC / H.265 (default on newer iPhones): ~175MB per minute of 4K
  • ProRes (if enabled): up to 6GB per minute of 4K

Quick sanity check: go to Settings → Camera → Formats on your iPhone. "High Efficiency" means HEVC (reasonable sizes). "Most Compatible" means H.264 (bigger). If you see ProRes enabled anywhere — that's your 47GB explained.

But regardless of the codec, if you have dozens of videos, the storage adds up fast. Here's how to shrink them.

Option 1: Re-export from QuickTime Player

  1. Open the MOV file in QuickTime Player.
  2. Go to File → Export As.
  3. Pick a resolution: 4K, 1080p, 720p, or 480p.

The catch: resolution is not the same as compression. Dropping from 4K to 1080p does reduce file size, but you're also throwing away 75% of your pixels. If you want to keep 4K but just reduce the bitrate, QuickTime doesn't offer that. One file at a time, too.

Option 2: Finder's Hidden Encode Feature

Most people don't know about this one. Right-click any video file in Finder:

  1. Go to Services → Encode Selected Video Files.
  2. Choose a preset: 480p, 720p, 1080p, or Audio Only.
  3. Check "Greater Compatibility (H.264)" if needed.

It's slightly better than QuickTime, but still resolution-based. No quality slider, no way to keep 4K at a lower bitrate, and no batch folder processing.

Option 3: Shrink MOV Files with ShrinkPad

This is where you stop compromising between resolution and file size.

iPhone Video Test
12 MOV files from an iPhone 16 Pro (4K HEVC, 8.4GB total):
  • Finder encode at 1080p: 1.9GB — but you lost 4K resolution.
  • ShrinkPad at 85% quality: 2.1GB — 75% smaller and still 4K.

Here's the workflow:

  1. Drop your folder: Grab your entire vacation folder and drop it onto ShrinkPad. It picks up all MOV, MP4, and M4V files automatically.
  2. Subfolder support: If your videos are organized by date or event, ShrinkPad crawls into each subfolder. No need to open them individually.
  3. Adjust quality: Slide to 80-85% for an invisible quality difference and dramatic size reduction.
  4. Compress: Let your Apple Silicon do its thing.
Shrinkpad App Icon

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Should You Convert MOV to MP4?

Short answer: for sharing, yes. MP4 is universally compatible — Windows, Android, web browsers, everything. For keeping on your Mac, MOV is fine since macOS handles it natively.

If you're sending a video to someone on Windows or Android, converting MOV to MP4 removes any compatibility headaches. ShrinkPad can handle this conversion as part of the compression process.

Stop Deleting Memories

Don't trash your vacation videos because they're eating your storage. Compress them, keep the quality, and reclaim the space.

For a deeper dive into video compression settings and codecs, see our guide: How to Compress Video on Mac Without Losing Quality.

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