For a long time, the development of high definition video was set to top at 1080p. And, sure enough, 1080p was the industry standard for high definition, and has been that way for some time. But if you know anything about technology then you can be certain that eventually something would have to come out that would top the superior quality of 1080p (and, after all, even among 1080p screens, they are not all the same).
Well, the time has come for the next thing after 1080p; and if you want the best, highest-quality movies, then you will be looking to download 4k videos.
But why 4k? What is it?
Well, instead of just talking about how much “better it is,” let’s look at why filmmakers prefer it as a post-production tool (and why it just might become the industry standard in the near future).
Cropping a photograph is pretty easy. Cropping frames in a video is not as easy. Cropping frames in a 1080p HD video—and retaining the same quality—is downright impossible.
But that is not the case with 4k video. One of the most immediately recognizable benefits to 4k video is the ability to crop out a significant percentage of any frame (or series of frames) and even to add cinematography (zooms, pans, tilts, etc) by changing the position of the cropping over the duration of the full shot (so, different croppings per frame to move the camera angle). This also allows to get a wide and close shot in the same take.
Relatively new technology now allows for improved post-production stabilization, which means we can now smooth out shaky raw footage. However, that technology is imperfect because it requires that you crop out the edge of any image(s) for “movement compensation,” which results in lower-output resolution. 4K, however, eliminates this problem.
4k has, obviously, four times the detail as 1080p and that makes it easier to track a 2D element in a 3D space, frame by frame. That type of tracking is common in film making today but lower quality video production can distort the image; 4k retains the 1080p quality.