Large videos taking up iPhone storage: keep originals, make smaller copies

Export the videos you want to keep to your Mac, check the saved files, then remove the iPhone copies if you no longer need them in your library. If you want a smaller viewing copy, use Photos on the Mac to export at a lower resolution while keeping the original separately. Lowering Camera settings helps future recordings; it does not shrink videos already saved.
Find the videos before changing anything
Start in Settings > General > iPhone Storage, then open Photos to inspect its usage and any recommendations shown. Apple's storage guide counts both photos and videos in the Photos category. Record the available space before starting, so you can compare it after cleanup.
In iOS 26, open Photos, tap Collections, scroll to Media Types, then open Videos. This is the current Apple route, rather than instructions that send you to an older Albums tab. Review recordings you recognize and decide which need to stay on the phone.
The library's Sort and Filter button offers Sort by Recently Added and Sort by Date Captured. Those are date orders, so putting recent recordings together does not establish which files occupy the most space. Use this view to locate an event; use measured file sizes when choosing what will make the biggest difference.
Why a few recordings can occupy so much space
Resolution, frame rate and recording format all matter. Apple's Camera guide says higher resolutions and faster frame rates produce larger files. A 4K recording at 60 fps therefore deserves review before you spend time removing ordinary pictures, though its exact size should be measured rather than inferred from duration alone.
ProRes can change the calculation much more. Apple says ProRes files can be up to 30 times larger than HEVC files. Its editing benefits come with a storage cost, so preserve the original when you still need it for editing, and make a separate smaller copy for casual viewing.
Slow motion also involves high frame rates. Apple's recording settings guide documents 1080 HD at 240 fps for rear-camera slo-mo, with a 120 fps option. HDR is another setting on supported models, but it is not a fixed file-size multiplier you can apply to every video. Keep HDR appearance in your playback checks when comparing an original with an exported copy.
Keep originals on the Mac first
Apple's Photos app is enough for a normal cable import. Connect the iPhone by USB, unlock it, allow the accessory connection on the Mac if asked, and tap Trust on the phone if prompted. Open Photos on the Mac, select the iPhone in the sidebar, choose the videos, and click Import Selected. Wait for the import to finish, following Apple's import instructions.
For HEVC originals, check Settings > Apps > Photos on the iPhone and select Keep Originals before importing. Apple explains that USB imports may otherwise convert HEVC to H.264. This controls transfer conversion; it does not fetch an original that is only in iCloud.
If you already use iCloud Photos, the videos may be available in Photos on your Mac without another import. Choose Photos > Settings > iCloud > Download Originals to this Mac when you need full-size local files, as Apple documents. Before deleting from the phone, export an independent copy outside the synced library. The photo transfer guide covers the other transfer routes, including Image Capture for a folder destination.
Make a smaller copy with Photos on Mac
For an existing video, Apple's documented Mac export workflow gives you a resolution choice. Work on a copy of a recording you have already archived, especially when the source is 4K or ProRes.
- Select the video in Photos on the Mac.
- Choose File > Export > Export [number] Videos.
- Open Movie Quality and choose 1080p or 720p for a lower-resolution viewing copy.
- Click Export, choose a separate destination, then click Export again.
Apple's export guide also lists 480p and 4K. The setting specifies output resolution, without promising a particular percentage reduction. Compare the resulting file's size and playback with the original before processing a whole collection.
Keep this export separate from File > Export > Export Unmodified Original, which preserves the imported format. Making a smaller file on your Mac leaves the iPhone's existing video in place, so there is no phone-storage saving until you separately remove that copy. If the reduced version is all you want on the phone, test sending it back with AirDrop and playing it before deleting the original from the library.
Use Yado when you need the largest files first
If you already know which videos to move, Apple's import and export tools can finish the job. Yado helps when you want a measured list on the Mac before making that selection. Connect by USB and open Clean, then expand Large Videos.
Large Videos includes videos of at least 100 MB, sorted largest first. The row shows their combined size; hovering over a thumbnail reveals its filename and individual size.
For a separate export you can inspect before removal, open Photos in Yado, open a video to play it, then use Select Photos and Export to Mac for your chosen items. Yado asks the phone for its original formats rather than converted copies, and copies the files available on the phone without a compression setting. It checks downloaded size and records a content digest; before Delete from iPhone, it checks the saved file against that record again.
Clean combines export, verification and removal for the selected videos, using a Mac destination you choose. Use the separate Photos workflow if you want time to review the archive between those actions. With iCloud Photos enabled, or its state unknown, Yado keeps items on the phone when it cannot confirm that the exported files represent full originals.
Delete only after checking the archive
Play the saved videos, seek through them, check the end and listen to the audio. Compare any smaller viewing copy with its original, including bright HDR scenes and slow-motion sections. Make another copy of irreplaceable originals before clearing the phone.
With iCloud Photos, deletion reaches iCloud and the other synced devices too. A video visible in the Mac's synced Photos library can disappear there when you delete it on the iPhone. The export-then-delete guide explains how to retain a separate archive.
Deleted photos and videos remain in Recently Deleted for 30 days, according to Apple's deletion guide. If you removed the wrong recording, recover it there before permanent deletion. For storage that has not returned, check Recently Deleted and follow the iPhone storage guide; emptying it early gives up that recovery window.
Live Photos also need care. Exporting an unmodified Live Photo produces a still image and a video component. Keep both files together when preserving motion, rather than deleting the small video because its companion looks like a complete photograph.
Reduce the size of future recordings
Open Settings > Camera > Record Video and choose a lower resolution or frame rate that suits the recording. Try 1080p at 30 fps for everyday clips, keeping 4K at 60 fps for footage where you want that resolution and motion. Available choices depend on the iPhone model.
In Settings > Camera > Formats, High Efficiency uses HEVC for video; Most Compatible uses H.264. Apple describes HEVC as using less storage at the same visual quality. If your editing or playback tools require H.264, account for that compatibility need before switching.
Review ProRes separately if you enabled it for editing, and use Settings > Camera > Record Slo-mo for slow-motion settings. Record a short test with the new choices, play it on the devices you actually use, and check its size. Leave the archived originals unchanged while deciding whether the new settings suit future recordings.