How are movies DVD and movies made? Which do you do first and which do you do later?

1. Today's movies are also made directly into numbers (tapes). If it is made into film directly, it will be converted into a digital file by scanning. Digital movies can be edited on a computer. In the past, when there were no numbers, editing was a real "editing". The film is cut and spliced with scissors, or each frame (that is, each negative) is specially treated. ...

2. To put it bluntly, digital film conversion means projecting each frame of image onto the film (just like a projector, projecting each frame of image onto the film), exposing the film (just like taking a photo, "shooting" each frame of image onto the film), then developing the film (developing, fixing, washing and stabilizing, just like developing a color film), and then "developing". Detailed steps will be more complicated, such as making sound and light base, overprinting subtitles, color matching, frame number conversion and so on.

3. The Conference on Disarmament has been postponed for several months. Think about it, a singer may prepare to tour 20 times in half a year. After the first show, the CD came out and everyone would buy it. After traveling to the local area, everyone has seen ... how do they make money? So is the movie.

4, anti-piracy generally have two means:

One is administrative means, such as putting pressure on local cultural departments and law enforcement departments to crack down on piracy;

Followed by hardware means.

Blu-ray and red-ray discs have disappeared: the file code (each pixel of the video) is directly encrypted by using HDCP. When you play, you will verify various devices (such as players, TVs, amplifiers, and graphics cards). If these devices all support HDCP (devices that support HDCP require that videos cannot be copied), they can be decoded and played, otherwise they cannot be played.

DVD: Add a piece of code protected by copyright to a DVD disc, and the burning software can recognize this code and refuse to copy it. There are also restrictions on the area code of DVD discs and players, but the area code of anti-piracy version has long been invalid.

VCD: VCD without protection mechanism can be added with a CRC error code, so that the burning software can judge that the CD is damaged and cannot be burned (but this method is often used in encryption of some game CDs, but less used in video CDs).

But in short, no matter how safe the door is, some people can break in. How else did you download a lot of movies online?

In addition, explain why film shooting prefers film:

Generally, human eyes watch static pictures with 200-300DPI, and the accuracy is high (such as photos and magazines). Human eyes are relatively insensitive to dynamic pictures, and the accuracy of 40-50DPI is usually high enough. For example, the length * width of a 42-inch LCD TV is about 36*20 inches (diagonal 42 inches). When the video of 1920* 1080 is displayed, it is about 53DIP (1920/36 or 1080/20), so it is 65438+.

The screen size of the cinema is much larger, generally nearly 30 meters in length and over 20 meters in height from 10. According to the calculation of 28*22 meters, the resolution of 54,600 * 42,900 is needed to achieve the high-definition projection accuracy of 50DPI, which is difficult for digital equipment to achieve.

But in theory, because photosensitive dyes are linear and the resolution is infinite, it is possible to realize high-definition playback on this big screen.

I have compared the magnification of film and digital photos before. Under ideal development and exposure conditions, the resolution of the developed 135 film, even the film with heavy graininess, is equivalent to that of a digital camera with 50 million pixels.

So it's mostly film, and of course there are digital ones. Therefore, it is often reported that a director in Hollywood invested millions to buy 10 cameras in order to make a film, which is normal, not including the post-production equipment. The cameras used in TV stations are much cheaper, usually tens of thousands of dollars can be done.