What's the difference between the original movie 4k and 4k HD?

The 4K digital movie refers to the digital movie with the resolution of 4096×2 160, so it is also called 2 160P, that is, it has 4000 pixels horizontally, which is the highest resolution digital movie.

The original disc refers to the digital copy of the officially published Blu-ray disc, and the resolution can reach 1920× 1080 format.

Second, the content

4K movies are shot on 35mm film and then converted into 4K digital format. But the content may be deleted.

The original BD must be a copy of the original data, and it is not allowed to add, delete or change the original data and structure, while the changed BD is called by other names.

4k development process:

From 65438 to 0999, Sony introduced a brand-new concept of digital film production to the film industry. In the process of film production, filmmakers can obtain higher image quality, efficiency and greater flexibility, that is, digital film production.

In this new method, digital video tape media is used for film production, and the high-definition progressive video format of the film is 24 frames per second. This new concept and Sony series products adopting this concept are called CineAlta, which has been accepted by more and more producers, directors and photographers all over the world.

The number of movies made with CineAlta equipment is increasing day by day, which means that more and more movies will be made digitally using these systems. The rapid development of high-definition applications requires the best technology in all environments of professional production process.

Therefore, in 2006, Sony introduced the "CineAlta 4K" projector, which is an extension of the CineAlta brand. According to its long-term plan, a 4K production process will be established. In other words, the technology and equipment of Sony's 4K cinema can make 4K digital movies truly become a reality.

The above contents refer to Baidu Encyclopedia-Blu-ray original disc.

The above contents refer to Baidu Encyclopedia -4K movies.