If you have an iPhone 15 Pro (and iOS 17.2), you can go into Settings -> Camera -> Formats and turn on a setting called "spatial video." It will then enable this (excerpt from Om Malik):
Spatial video is a mixed-reality video format that allows videos to record the depth and spatial information of the scene, and when you play it back, you get a more immersive, three-dimensional (3D) experience. The iPhone 15 Pro utilizes its main lens and the ultra-wide lens to capture the depth and spatial information of the videos. The spatial videos are captured at 1080p, 30 frames per second, and use the HEIC format.
What you can then do is watch your videos on something like an Apple Vision Pro. It's not going to be exactly perfect right now -- given that the Vision Pro display is over 8k and the above is 1080p -- but it will give you an indication of what's to come for photography, video, and many other use cases.
Some examples.
As a regular consumer, this might allow you to capture videos from a trip and then more fully relive the moments once you're at home. And as Om argues in his post, this will inevitably