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GIF format two-dimensional silent pixel dot matrix format second frame dynamic picture animation

and SWF format two-dimensional or three-dimensional vector format Audio-visual FLASH animation

and audio-visual animation-level video with three-dimensional animation format in FLV format

and audio-visual pure-level video with three-dimensional video format in AVI format

The difference between

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Comics and animation are two concepts. Comics are static flat picture works, such as picture groups in BMP or JPEG format, and animation is Continuous playback of a dynamic cartoon of several frames per second, which is divided into two-dimensional silent pixel dot matrix frame dynamic picture animation in the early GIF format and two-dimensional or three-dimensional audio-visual FLASH animation in the vector SWF format. Both comics and animation are collectively called "animation".

Animation is divided into two-dimensional animation and three-dimensional animation. The two-dimensional production method is to realize the movements of the characters by hand-drawing characters and presenting them alternately with different pictures. There is also a simple flash animation method, which is to decompose the character's limbs in the software and move the joints to realize the movements. However, the movements of this method are relatively stiff, like paper cuts. Three-dimensional production is relatively complicated. First, create a model in a three-dimensional animation software, add materials to the model, set the skeleton, and then use a certain controller to operate the skeleton movement to realize the character's movements, expressions, etc.

Video is different from the animation mentioned above. Videos are generally captured by cameras and then edited and processed later. Animation production starts from scratch, and all content is "produced out of thin air". It is an "additional" work process. Video production requires shooting a large amount of material in the early stage for later editing, which can be regarded as a "minus" work process.

So, what is the difference between the two-dimensional silent pixel dot matrix frame dynamic picture animation in GIF format, the two-dimensional or three-dimensional audio-visual FLASH animation in vector SWF format, and the pure three-dimensional audio-visual video in FLV, AVI and other formats? , what is the difference? Let’s talk about it in detail below:

The early silent GIF animation is the abbreviation of English Graphics Interchange Format (Graphics Interchange Format). As the name suggests, this format is used to exchange moving still pictures. In fact, this is also true. In the 1980s, CompuServe, a well-known online information service organization in the United States, developed this GIF image format in response to the limitations of network transmission bandwidth at that time.

The GIF format is characterized by a high compression ratio and less disk space usage, so this image format has quickly become widely used. The original GIF was simply used to store a single still image (called GIF87a). Later, with the development of technology, several still images could be stored at the same time to form a continuous animation, making it one of the few software that supported 2D animation at that time. One of the formats (called GIF89a), and transparent areas can be specified in the GIF89a image to give the image an extraordinary display effect, which makes GIF even more beautiful. Most of the color animation files currently used on the Internet are in this format, also known as GIF89a format files.

In addition, taking into account the actual situation in network transmission, the GIF image format also adds a gradual display method, that is to say, during the image transmission process, the user can first see the rough outline of the image, and then gradually As the transmission process continues, the details in the image are gradually seen clearly, thereby adapting to the user's viewing psychology of "from hazy to clear". Most of the color animation files currently used on the Internet are in this format.

But GIF has a small disadvantage, that is, it cannot store images with more than 256 colors. Despite this, this format is still widely used on the Internet, which is inseparable from the advantages of GIF image files, such as short image files, fast download speed, and the ability to use many image files of the same size to compose animations.

SWF-FLASH (Shockwave Format) animation, which appeared after GIF, is produced using Flash editing software. Animation images in this format can express rich multimedia forms with images and sounds in a relatively small size. . In terms of image transmission, you don't have to wait until the file is downloaded before you can watch it. Instead, you can watch it while downloading. Therefore, it is particularly suitable for network transmission, especially when the transmission rate is not good, it can also achieve better results. Facts have also proven this. SWF has now been widely used in WEB web pages for multimedia presentation and interactive design. In addition, SWF animation is produced using vector technology, so no matter how many times the picture is enlarged, the picture will not be damaged in any way.

To sum up, GIF is a frame-by-second animation of dynamic pictures. It is a file in GIF format and has no sound. FLASH is a video animation of 24 frames per second and is a file in SWF format. It can have sound and can also control its playback speed; FLV is a 24 frames per second audio-visual video and is a file in FLV format.

It can be seen that GIF files are small and have poor rendering effects and often drop frames. FLASH files are large, but the images can be made very well and the sound is dispensable; FLV files are larger, but the images can be made very good. It brings a sense of reality to life and must have sound; GIF does not require a video player and can be played on the WINDOWS system anytime and anywhere, while FLASH requires a video player; and FLV requires a video player even more.

It should be noted that as far as animation is concerned, early silent GIF animations are now only used for silent display in small areas such as forum signature files and website LOGO and BANNER; large-area sound animations have gradually been replaced by vector SWF Replaced by two-dimensional or three-dimensional audio-visual animations, SWF format works are favored by more and more web designers for their high-definition image quality and compact size, and are increasingly becoming the preferred choice for web animation and web image design and production. Mainstream, it has now become the de facto standard for online animation.

As far as video is concerned, whether it is GIF animation or SWF animation, they are two different things.

Audio and video include VCD\CVD\DVD\WFV\AVI\FLV and other file formats, which need to be played using special video players respectively. The carrier has transitioned from early video tapes to current optical discs, because the files are too large. Most of them are used for home theater playback and not as online video applications. Most of the applications on video websites are SWF animated videos with smaller files rather than pure audio and video videos.

Explanation

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