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This article is to share with you what the motion picture format in the computer is called. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

The format of moving pictures is called Gif format, and the English full name of Gif is Graphics Interchange Format, which can be translated into graphics interchange format; it is through the multi-layer pictures, different switching according to time, when a group of specific still images switch at a specified frequency to produce some kind of dynamic image, so as to achieve the effect of animation.

The full name of GIF is Graphics Interchange Format, which can be translated into graphics interchange format. It is used to display indexed color images in Hypertext markup language (Hypertext Markup Language). It is widely used on the Internet and other online service systems. GIF is a common image file format standard, and the copyright is owned by Compu Serve.

GIF is a bitmap. The general principle of a bitmap is that a picture is made up of many pixels, each of which is assigned a color, and these pixels are combined to form a picture. GIF uses the Lempel-Zev-Welch (LZW) compression algorithm, which supports up to 256 colors. Because of this feature, GIF is more suitable for pictures with fewer colors, such as cartoon shapes, company logos and so on. If there is a need to use true color, then the expressive power of GIF is limited. GIF usually comes with a color palette that stores all the colors you need. In the application of Web, the file size of the image will obviously affect the download speed, so we can optimize the color palette according to the characteristics of GIF with color palette to reduce the number of colors used in the image (some colors that are not used in the image can be removed) without affecting the quality of the picture.

The biggest difference between GIF format and other image formats is that it is designed entirely as a common standard. Due to the popularity of Compu Serve networks, many platforms support GIF format. Compu Serve promotes GIF through free format manuals, but requires software that uses the GIF file format to include a description of its copyright information.

Version

GIF is available in both GIF87a and GIF89a versions.

The GIF87a version, launched in 1987, stores one image per file and strictly does not support transparent pixels; GIF87a uses the LZW compression algorithm, which can compress the image size by 20% to 25 while maintaining image quality.

The GIF89a version is a very distinctive version launched in 1989, which allows multiple images to be stored in a single file, animates, and allows certain pixels to be transparent. In this version, four blocks such as graphic control block, comment, description and application programming interface are expanded for GIF documents, and support for transparent color and multi-frame animation is provided.

GIF89a has made significant improvements in transparency, interlacing, and animated GIF. The first is to support transparency, and GIF89a allows some parts of the image to be invisible. This feature is very important, so that we can use this feature on some occasions to make the edge of the image no longer appear as a rectangular border, but into any shape we want. These transparent areas can be easily generated in Photoshop and Fireworks and exported to GIF images in GIF89a format. Of course, transparency does not mean that the border no longer exists, in fact, it does exist, but it is not displayed, which makes the inserted picture more compatible with the overall web page.

Thank you for reading! This is the end of this article on "what's the name of the moving picture format in the computer". I hope the above content can be of some help to you, so that you can learn more knowledge. If you think the article is good, you can share it out for more people to see!

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