Imagine there was only one dimension. Only height exists, no depth, no width, just height.
Using one-dimensional camera you can make one-dimensional movies and render them to a normal two dimensional image. This works by taking a single pixel slice from your phones video feed and drawing all the slices side by side in an image. Images can be saved to your photo album.
Granted, this is a bit of a gimmick and the app is based on a silly idea that I had. It works nicely on scenes that are mostly static but have occasional moving objects. Like bike lanes, sidewalks, etc...