How Movie Theaters Play Movies

Movie theaters use digital machines to play movies.

Digital copies are copied to a digital movie server and then can be played during the time after the key is in effect and before it expires, which is the slot.

Digital movies are played on a digital movie server and imaged on a screen projected through a digital movie projector. The sound is transmitted from the digital movie server to the decoder to each amplifier and then to each speaker.

The digital copy is an encrypted removable hard disk that can only be read on the digital movie server, the digital movie server can be understood as a host with a very powerful graphics card, and the digital movie projector is actually a very powerful projector.

Expanded Information:

Digital Movie Production:

There are three ways to produce a digital movie:

It is computer-generated; the second is to use a high-definition digital video camera to shoot; and the third is to use the film camera to shoot the completion of the film, and then digitized to the computer hard drive. in the computer's hard disk.

From the results of these three ways of shooting, because the resolution and color reproduction of film is still far from being able to catch up with digital film (before 2009).

This is related to the different imaging principles, silver halide soft film based on natural light-sensitive imaging, the fineness of its particles is much larger than the artificial design of the CCD optoelectronics pixels, with the continuous improvement of computer technology, high-definition digital video cameras will gradually approach or even reach the level of the resolution of the film camera level, but in the color reproduction, high-definition digital video cameras are still unable to achieve the film cameras.

So, for a long time to come, the best theater-level digital movie production, is still the pre-film shooting, after film processing to digital signals for post-production editing, processing, and then transferred to digital video technology screening.

Because the picture quality of the pre-film shooting has been determined, and later transferred to digital projection, the color and details of the silver halide by digital technology to accurately locate the projection effect is far more than the film projector, to avoid the film's flicker, blurring and so on the shortcomings of the film.

The cinema blockbuster "digital version" is the successful practice of the above technology.

Additionally, according to the 2009 research results of Allegra's Digital Technology Research Laboratory (DTRL), a famous German film camera brand, when they expanded the CCD pixels of the digital camera to an unlimited size (8K), the sharpness of the image reached an astonishingly fine degree, even to the level of a human pore, in the laboratory's finest test conditions. degree that even human pore fluff could be seen clearly.

But, in terms of color reproduction and saturation, there's still a big gap between digital cameras and film cameras, and it's almost impossible for digital technology to achieve the color acuity of film. That's because digital technology relies on artificially simulated color varieties.

For example: If the color of a point in the subject is not available in the CCD coupling circuit, then the CCD can only find the closest to replace it, and once this is the case more, the color reproduction will be greatly reduced.

Also, in terms of light-sensitive latitude, digital cameras are still weak. Under the same conditions, a film camera needs only one light or even no light, but a digital camera needs two or more lights to compensate for the CCD's light-sensitivity problems.

And in terms of contrast, digital technology is much less detailed reproduction, when the subject of the light and dark parts of the contrast is stronger, digital technology to capture the details of the "compatibility" of serious problems.

That's why when we look at a digitally shot movie, we find that when the contrast between light and dark is strong, the darker parts of a digitally shot movie have very little detail, or are even darker, whereas a film movie can show very subtle detail and color contrast.

The lab's director concluded in the end that "under present-day conditions, there is still no good reason why we cannot see a decisive advantage for digital technology to fully replace film technology from the point of view of the art of cinema."

So, from a technological point of view, the future of digital technology is closer to the art of television than to cinema. The fact that 30 years after digital technology came out, the world's dominant way of making movies is still with film cameras probably speaks for itself.

The biggest advantage of digital technology lies in the cost and preservation effect of the work master, the same conditions, celluloid film on the preservation of the work, only within 50 years, or even 30 years. Because silver halide has a certain degree of volatility, in terms of time, the hard disk of digital technology, almost non-destructive.

Baidu Encyclopedia-Digital Cinema