Why one video outweighs a thousand photos
A 12MP HEIC photo is ~1.6MB. A minute of 4K60 is ~400MB — the same as 250 photos. That's why storage vanishes after a concert or a holiday: a handful of clips outweigh months of photos. The fix is always biggest-first: sort videos by size and handle the top 5 before touching anything else. Our guide to deleting videos taking up space walks through it, and shrinking 4K videos shows how to keep the keepers at a quarter of the size.
Shoot smaller next time
In Settings > Camera > Record Video, 1080p at 30fps looks identical on a phone screen and uses a third of 4K60. Save 4K for footage you'll edit or watch on a TV. More in why photos take up so much space.