![]() I used my DJI Phantom 2 with a gimbal-mounted GoPro Hero 4 to capture all the footage. It’s because applying our tracking data to our Null and parenting our Call-Out layer to it gives us more freedom, which means we can reposition our motion graphic any time or move it to a later part of the clip without destroying our track.This video I recently shot in Zilker Park in Austin, Texas was my first attempt at motion tracking and adding titles to aerial footage. You might be wondering why I applied the tracking data the Null and not the actual Call-Out graphic. In this example, I first went into the middle of the clip before I did my parenting, because this part of the footage gives me the best layout for my purposes. You can parent your layer by dragging the pick whip of the Call-Out layer to Null 1. The next step is to position your graphic in the composition and parent it to Null 1. The tracking data is now applied to the position property of our Null 1. Is it just on the X-axis? Y-axis? Or both? Choose “X and Y” and press “OK.” When you’re doing single-point tracking, AE will always ask you where to apply the tracking data. The Motion Tracker Apply Options will appear. Next, click “Apply” in the Tracker Panel. Now click on “Edit Target,” choose “Null 1” and press “OK.” This tells AE to put all the tracking data created into the Null 1 layer. When the tracking is done, you’ll see that the tracker has generated keyframes for every frame of the shot. You can start tracking even from the middle or end of the clip. Take note that you don’t have to start at the beginning of the clip. Press the “Analyze Forward” button to start the tracking process. Right now, I’m at the very first frame of the clip. By default, this is positioned at the center of the Feature Region, but can be moved if needed. It’s where the target layer or effect control point will be placed. Making the Search Region smaller results in faster tracking, but also runs the risk of the tracked feature leaving the search region entirely between frames.Īttach Point: The Attach Point is the actual point you are tracking. The element you are tracking should always be within this region, but it can be resized to accommodate large movements of your element. Search Region: The Search Region is the area that After Effects will search to locate the tracked feature. This should surround a distinct visual element, and it should be clearly identifiable in the duration of the track, even if there are changes in light, background, and angle. This is what I’ll be tracking.įeature Region: The Feature Region defines the element in the layer to be tracked. Collectively, these three are called a “tracker.” In this shot, I placed the tracker in the corner of one of the white pills. Each track point contains a Feature Region, a Search Region, and an Attach Point. Choose “Transform.”Īreas to be tracked are specified by setting the track points in the Layer Panel. There are also several Track Types within the point tracker. Since this is a one-point tracker, we are only checking Position. As you can see, you can track Position, Rotation, and Scale. You can track different areas in a single clip and the Current Track tells you which tracker is currently active. The Motion Source is your selected layer. Select “Track Motion” in the Tracker Panel. Select the layer, right-click, and choose “Track Motion.” This opens the Tracker Panel as well as the Layer Panel. I have three layers set up: the first is the footage that I’ll be tracking, the second is a Call-Outs AE template by adamshead, and the last is a null object, which will serve as the target for my track. ![]()
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