![]() These limitations certainly add to the challenge of creating an interesting GIF-but they may also contribute to its enduring charm. Without sound, animated GIFs are the digital equivalent of silent movies. GIFs tend to be short and sweet as a result, relying on reduced frame rates and restricted color palettes to keep the file size under control. A 10-second video clip in MP4 format might be 2MB the same video clip converted to GIF would be more than 20MB. The greater the pixel dimensions of the document, the higher the color count, and the quicker the frame rate, the larger the resulting file size. GIF files use a compression technique called LZW (Lempel-Ziv-Welch), which is a lossless algorithm poorly suited to animation and video playback. Netscape browser let creators choose the number of times the animation would loop. In the mid-1990s, support for the format by the ![]() Though it was never intended to serve as a platform for animations, a 1989 revision to the format (popularly known as GIF89a) allowed these frames to be displayed with time delays, permitting frame-by-frame animation. The format included two features that quickly earned it favor with programmers as well as the brand-new Web design community: image compression, which reduced the overall file size, and the capacity to hold more than one image (or frame) in a single file. But no matter how you say it, GIF technology allowed the online services company to deliver downloadable color images, a remarkable accomplishment for its time. ![]() Suffice it to say that about as many people seem to be proponents of the hard- G pronunciation as of the J. Select "Start After Previous" if your slide has multiple animations and you want the rectangle to begin rotating after the previous animation completes.Graphics Interchange Format-was developed in 1987 byĬompuServe, and a perpetual argument has raged about how to pronounce the one-syllable acronym, an argument I will not even attempt to negotiate. Choose the "Start with Previous" option if you have multiple animations and want the rectangle to begin rotating at the same time as the other animations. The menu's default option, "On Click," tells PowerPoint to start the animation when you click the mouse. These options allow you to determine when your animation starts in relation to other slide events if the slide has multiple events. If you don't click an option, PowerPoint applies the Full Spin option to the rectangle by default.Ĭlick the "Start" drop-down menu and review the options that appear in that menu. Click one of these options if you want the rectangle to spin in a certain way. These options include Clockwise, Half Spin and Counterclockwise. This tag lets you know that the rectangle has an animation.Ĭlick the tag to select it and then click "Effect Options." A menu containing effect options opens. PowerPoint also places a small tag containing a number next to the rectangle. Click the "Spin" animation to apply it to the rectangle. A drop-down menu opens and displays a list of animation types. Double-click a point on the slide to add the rectangle to the slide.Ĭlick "Animations" and then click the "More" arrow in the Animations section. Click the rectangle shape from the drop-down menu.
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