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My God! Its full of stars!

Slit Scan camera effect in After Effects 6.0 By Stephen Schleicher
One of the trippiest effects of all time has to be the Star Gate sequence at the end of 2001: A Space Odyssey. Originally, Kubrick and the rest of the crew didnt have the benefit of computer technology to assist in the creation of the movie. Instead they relied on a ?Slit Scan machine created by innovator Douglas Trumbull. This created the illusion of two planes of infinite proportions. Some of the shots that went into the final effect included aerial landscape footage and chemical interactions.

Lets create our own Star Gate using some of the same principles, but with an After Effects twist.

Step 1: Create a new project in After Effects by pressing Command+N on the Mac or Control+N on the PC. Use the DV NTSC preset. Name the composition Star Gate, and set the length to two seconds.

Step 2: For the actual effect, you can either use Fractal Noise, or for a more believable results, you can use a clip from one of Artbeats many collections. Since the original effect used aerial footage, I will be using a farm flyover from the Artbeats Aerial Landscapes collection.

Our final animation we will create in this exercise.

Step 3: Place your movie file in the composition, by dragging it from the Project Window to the Timeline.

One thing you will notice is that the clip is longer than the relatively short length of the comp. From the previous image, you will also see that the Aerial movie is a rather slow moving clip. To shorten the clip and to speed up the apparent motion you can use After Effects Time Stretch feature.

Step 4: With the Aerial layer selected in the Timeline, go to Layer>Time Stretch. Change the Stretch Factor to 15% to speed up the layer so it lasts only two seconds.

Time Stretch allows you to speed up or slow down a motion clip.

After Effects doesnt have a Slit Scan feature to create an infinite plane, but it does have a 3D feature which can be used to imitate an infinitely long plane.

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Related Keywords:Slit Scan, after effects, adobe, tutorial, 2001, schleicher


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