What weighs more: 1000 photos or one long video?

It sounds like a trick question. A thousand of anything sounds like a lot. But when it comes to iPhone storage, the answer might surprise you — and it completely changes how you should tackle a full storage warning.

We ran the numbers using real file sizes from a typical iPhone 15 user (let's call her Sarah). Sarah takes a mix of standard HEIC photos, some Live Photos, and the occasional 4K video. Her gallery is pretty average — about 8,000 photos and 200 videos. And like most of us, she's always running out of space.

The math: photos vs. videos

A standard photo taken on an iPhone 15 in HEIC format is about 2–3 MB. If Sarah takes a burst of 10 photos, that's already 25 MB for a single moment. Live Photos are roughly double — around 5–6 MB each. ProRAW photos can be 25 MB or more, but most people don't use that.

Now, videos. A 4K video at 60 frames per second uses about 400 MB per minute. A 10‑minute clip is 4 GB. Even a 1080p video at 30 fps uses about 130 MB per minute — a 30‑minute recording is nearly 4 GB. One video can easily outweigh a thousand photos.

So the answer: one long 4K video (say, 12 minutes) already exceeds 1000 photos (about 2.5 GB). A single 30‑minute 1080p video also beats a thousand photos. Video is the heavyweight champion.

Why this matters for your cleaning strategy

If you're desperate to free up space, you should start with videos. Not photos. Not screenshots. Videos. Because a handful of videos are probably eating more gigabytes than everything else combined.

We looked at 100 random iPhone galleries (with permission) and found that on average, videos make up only 10% of the files but occupy 60% of the storage. That's insane. And most of those videos are never watched again — concert footage, old tutorials, screen recordings, downloaded movies.

Where to find the biggest space hogs

iOS doesn't make it easy to sort your gallery by file size. You can go to the Videos album, but it's sorted by date, not size. You have to scroll and guess. That's why we built Clean Up Storage to automatically find and group your largest videos. In one tap, you see a list of videos sorted by size — from biggest to smallest.

When Sarah ran it, she found a 4K video of a fireworks show from two years ago (3.2 GB), a screen recording of a work meeting she never watched again (1.8 GB), and a movie she'd downloaded for a flight (2.5 GB). Deleting just those three freed up over 7 GB — almost half her storage problem.

But wait — don't delete everything!

Some videos are precious. Your kid's first steps, a wedding speech, a vacation memory. You don't want to lose those. But you might not need them in 4K at 60 fps. That's where compression comes in.

Clean Up Storage can compress videos without noticeable quality loss. A 4 GB video can shrink to 1 GB while still looking great on a phone screen. You keep the memory, you lose the bloat.

What about Live Photos?

Live Photos are sneaky. They're basically a short video wrapped around a still. That's why they take up twice as much space. If you have hundreds of Live Photos, that's gigabytes you might not need. Go through them and ask: does this moment really need motion? If not, flatten it to a standard photo. Clean Up Storage can batch‑convert Live Photos, saving you half the space instantly.

The bottom line

When your iPhone says "Storage Almost Full", don't panic over your photo library. Check your videos first. They're the real giants. A few minutes of cleaning videos and Live Photos can give you back more space than hours of sorting through photos.

And if you want to do it the easy way, let Clean Up Storage find them for you. It's like having a personal assistant who knows exactly where the space hogs are hiding.