Take what I said about reducing file size with a grain of salt - video of the same length takes up much less space than a GIF of the same length. GIFs are compressed using the Lempel-Ziv-Welch lossless data compression, which reduces file size without degrading visual quality. Each image can contain up to 8 bits per pixel, allowing for a limit of 256 colors. GIFs work by compressing a set of frames or images into an image sequence that then loop for a set amount of time (or forever). This format was developed by a team led by Steve Wilhite at CompuServe. GIF is short for graphics interchange format, and first appeared in 1987. The difference lies in how the containers and files inside the containers are configured, as we'll soon find out. How does an image sequence differ from a video? Aren't all videos just sequences of images? In some respects, yes, in others no. A GIF differs from a video in that it's an animated sequence of images.
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