Adobe 65021048 User Guide - Page 264

ADOBE PREMIERE PRO CS3 258 User Guide Eliminate flicker Thin lines and sharp edges in images sometimes flicker when shown on interlaced displays, such as many TV screens. The Anti-flicker Filter control in the Motion effect can reduce or eliminate this flicker. As you increase its strength, more flicker is eliminated, but the image also becomes softer. You may need to set it relatively high for images with lots of sharp edges and high contrast. 1 Select a clip in the Timeline panel, and click the Effect Controls tab. 2 Click the triangle next to the Motion heading to open the Motion controls. 3 Click the triangle next to the Anti-flicker Filter heading. 4 Drag the Anti-flicker Filter slider to the right to increase the strength of the filter. 5 Press the spacebar to preview the clip. Increase the filter strength if flicker is still visible, or decrease it if the image is too soft. You can change the intensity of the Anti-flicker Filter over the duration of a clip by setting Anti-flicker Filter keyframes at different values. Color correction Adjusting color and luminance In video, color correction encompasses adjusting both the hue (color or chroma) and luminance (brightness and contrast) in an image. Adjusting the color and luminance in video clips can create a mood, eliminate a color cast in a clip, correct video that's too dark or too light, or set the levels to meet broadcast requirements or to match color from scene to scene. Effects can also adjust the color and luminance to emphasize or de-emphasize a detail in a clip. You can find the color- and luminance-adjusting effects in the Color Correction bin inside the Video Effects bin. Although there are other effects that adjust color and luminance, the Color Correction effects are designed for making very fine color and luminance corrections. You apply the Color Correction effects to a clip the same way you apply all Standard effects. The effect properties are adjusted in the Effect Controls panel. The Color Correction effects and other color effects are clip-based. However, you can apply them to multiple clips by nesting sequences. For information about nesting sequences, see "Nest sequences" on page 155. You can use the Broadcast Colors effect to adjust a clip's colors to broadcast standards. When correcting color, it's useful to use Adobe Premiere Pro's Vectorscope or waveform scopes (YC Waveform, RGB Parade, and YCbCr Parade) to help you analyze the chroma and luminance in a clip. You can view a scope in a separate Reference Monitor that's ganged to the Program Monitor so that you can check your video levels as you make adjustments. For information about scopes, see "About the vectorscope and waveform monitors" on page 278. For a video and print tutorial about correcting color, see www.adobe.com/go/learn_dv_tutorial_fastcolor. April 1, 2008