What is variable images?

Variable framerate is the practice of video coding with different images for different parts of the movie. This practice was almost unheard of until high -resolution films (HD) have not reached meaning. Some common HD video formats will use variable framerate to increase compression and reduce file size. The basic method of this practice is increasing speed during high movement and speed reduction during static scenes. Although this practice in videos is still unusual, the use of variable bitrates in audio files is very similar to practice and has existed for many years.

To understand variable images, it is important to understand several basic terms. The frame is the only picture like a piece of film. Framerate is the number of frames that appear on the screen per second, and basically create a film as a complex flipbook. Higher images will result in spiritual image and lower rates will tear and skip. It is important to realize that framerate is independent of the tacing tput like lowFoxing, but with a high framerate video will still look blurry, even if the movement works nicely.

Fixed image videos may not always have the same smoothness. In lower movement scenes, such as people sitting and talking or moving from a distance, the real change from the frame to the frame is very small. In the higher parts of movement, such as a combat scene or a shot of detailed movement, the change from frame to the frame can be very large. Although the frames move at the same speed, the movement will look jerky in fast movement due to the difference between images.

With variable framerate, this problem can be eliminated and reduced the size of the video. In general, with all other things, they are straight, the higher the framerate, the greater the end file. In the above example, the encoder would have a very large file to select action scenes, even if it corresponds to only a small part of the file. On the other hand can be withOUS Much smaller, but the action scene will look poorly coded.

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variable image system reduces images during slow parts and increases speed during fast parts. This will allow opinions to have a constant appearance without significant enlargement of the file size. This is done by creating a constant concerning the framework change. In a slow part with a low difference between frames, the speed maintains a constant amount of change by slowing the image. In fast parts, the amount of movement from the frame to the frame is reduced by acceleration of the image.