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The images may also function as animation frames in an animated GIF file, but again these need not fill the entire logical screen. GIF files start with a fixed-length header ("GIF87a" or "GIF89a") giving the version, followed by a fixed-length Logical Screen Descriptor giving the pixel dimensions and other characteristics of the logical screen.
Frame frequency often varies depending on animation style and is an artistic choice. Animation "on twos" has been used for over 100 years; Fantasmagorie (1908), widely considered the first fully animated movie, was animated on twos. Modern animation uses various techniques to adapt frame rates. Slow movements may be animated on threes or fours.
GIF images are restricted to 256 colors with limited compression, but the format is supported in all graphical web browsers and is still widely used. Animations can be generated ad hoc in a browser with the CSS 3 features animations , transitions, and sprites , or also the JavaScript web animations API , by specifying frames or motions of still ...
PIA02863 - Jupiter surface motion animation.gif 1,799 × 600; 7.51 MB. Pythagoras-2a.gif 590 × 590; 139 KB. Radial engine.gif 280 × 233; 159 KB.
Media in category "Free animated images" The following 14 files are in this category, out of 14 total. ... Jupiter surface motion animation.gif 1,799 × 600; 7.51 MB ...
Note: Due to technical limitations, thumbnails of high resolution GIF images such as this one will not be animated. This is a file from the Wikimedia Commons . Information from its description page there is shown below.
As regards jerky motion, animations are constrained by file-size issues (as discussed in that same comment above as well as the expansive note above). This animation runs near the edge of what is considered to be fluid motion: between 16.4 to 18.2 frames per second. This is the frame rate of Super 8 movie film. The interframe delay is set at 50 ms.
Note: Due to technical limitations, thumbnails of high resolution GIF images such as this one will not be animated. This is a file from the Wikimedia Commons . Information from its description page there is shown below.