Why iPhone Video Takes So Much Storage (and How to Fix It)

The Numbers, Per Minute

These are approximate HEVC figures for recent iPhones. They are worth internalising, because the gap between settings is much larger than most people assume.

• 4K, 60fps — roughly 400 MB per minute, about 24 GB per hour.
• 4K, 30fps — roughly 190 MB per minute.
• 1080p, 60fps — roughly 120 MB per minute.
• 1080p, 30fps — roughly 65 MB per minute.
• 720p, 30fps — roughly 40 MB per minute.
• ProRes 4K (Pro models) — roughly 6 GB per minute. A ten-minute take fills 60 GB.

Cinematic mode and Action mode both carry overheads of their own. Slo-mo at 240fps records four times the frames of standard 60fps footage and the file size follows.

Why Video Dwarfs Photos

A photo is one frame. Video at 30fps is thirty frames every second, and compression can only do so much when the scene is moving. A single 2 MB HEIC photo is equivalent to about two seconds of 1080p video.

This is why a camera roll that feels photo-heavy is often majority video by size. Check yours: Photos → Albums → Media Types → Videos. People are routinely surprised to find a few dozen clips outweighing twenty thousand photos.

Change the Setting Before You Film

The most effective change is prospective, not retrospective.

1. Open Settings → Camera → Record Video.
2. Select 1080p at 30 fps for everyday recording.
3. Under Formats, confirm High Efficiency is selected. Most Compatible records H.264, which is nearly double the size.
4. Turn off HDR Video if you do not need it. It adds overhead and causes playback headaches on non-Apple devices.

Dealing With Video You Already Have

Existing footage cannot be re-encoded in place by iOS, so the options are archive or delete.

• Sort by size. Photos does not offer this natively, which is a genuine gap. Settings → General → iPhone Storage → Photos gives you the totals, and the Videos album at least isolates the candidates.
• Trim rather than delete. Open a clip, tap Edit, drag the handles, and choose Save as New Clip. Cutting a three-minute video to thirty seconds returns most of the space.
• Archive off the device. An external drive or a cloud service holds the footage you want to keep but never watch.
• Delete the duplicates. Most people have several takes of the same moment. Keep one.

Then empty Recently Deleted, or none of it counts.

Is 4K Ever Worth It?

Sometimes, and it is worth being deliberate rather than dogmatic. Shoot 4K when the footage will be viewed on a television, when you intend to crop or stabilise in editing, or when it is a genuinely irreplaceable moment.

Shoot 1080p for everything else: social posts, quick clips to family, notes to yourself. Instagram and TikTok re-encode uploads to roughly 1080p anyway, so the extra data you captured is discarded before anyone sees it.

Our video storage guide goes further into codecs and frame rates, and Swype Photo Cleaner helps clear the backlog once you have changed the setting.