106 VIDEO EDITORHere is how to set multiple key frames and tweak settings on a clip with a Blureffect applied to it (Video Effects: Blur).To set multiple key frames and adjust their settings:1. Select a clip in Timeline with the Blur effect already applied to it.2. Click Window: Effects Manager3. Open up the Preview Window if it’s not in the workplace.4. Select Blur above Video Filter in Effects List. If Blur is not readily available,click a small triangle near the Video Filter line to expand the tree.5. Set Level value in the Settings Area to 1 at frame 1.6. Move two seconds towards the end of clip, click the Add key frame buttonto add a new keyframe.7. Set the blur level to 5 at the current playback cursor position.8. Move forward two more seconds and set the value to 1 again.9. Move forward yet two more seconds and set the value back to 5 again.10.Mark in the playback range at frame 1 then mark it out at 8 seconds.11.Preview the 8-second range and notice how the blur value animates throughthe clip.This is just a simple example to get you started changing effects values, settingmultiple key frames and animating them in a linear fashion.Previewing the applied effectsTweaking the settings on key frames require real-time interactivity. There are twopreview modes in MediaStudio Pro - via the Preview Window or external monitor.Both of the options can be used simultaneously if you have the right hardwareconfiguration. Specifically, your graphics card has to support an external monitor.When you need a real time preview you can limit it to the effect bearing clip onlyor watch the output with all project element in the timeline:To pre-render, click . Click to continuously loop the playback.The Timeline and Effects Manager both have a playback cursor that allows you toshuttle through your clip. You can either opt to lock the two to have a better time