Cinemagraphs are still photographs in which a minor and repeated movement occurs. Cinemagraphs, which are usually published in an animated GIF format, can give the illusion that the viewer is watching a video
Wikipedia
Here are some examples;
As seen in the images, still and moving images are combined to make a short loop which contains elements of both. These can be used to either disturb or surprise the viewer, as movement is not expected. The unique look of the cinemagraph is interesting and something we do not see very often – it is yet another example of how technology can help us combine media.