How to Motion Track in Adobe After Effects
This wikiHow teaches you how to add a static image or video to a moving video via motion tracking in Adobe After Effects.
1Open After Effects, then do the following: Create a new project by clicking File, selecting New, and clicking New Project. Click File Select Import Click Multiple Files... Hold down Ctrl or ⌘ Command while clicking the files you want to import. If your files are in separate locations, you'll have to click File > Import > Multiple Files... again and select your missing files. Click Open
2Click and drag the video file from the "Name" section down onto the "Composition" icon—which has an image of red, green, and blue shapes—then release the video. You should see the video appear in the center of Adobe After Effects.
3Click and drag your video or photo from the "Name" section into the project pane in the lower-left corner of the window, making sure to drop the file above the video's title there. This ensures that your motion-tracked file will stay on top of the video rather than hiding behind it. If you drop the file below the video's title, you can click and drag the file up to rearrange the order of the two files.
4Click your video's title in the lower-left side of the window.
5This is what will serve as your motion tracking target: Click Layer Select New Click Null Object
6Select your video's title again by clicking it in the lower-left corner of the window, then do the following: Click Animation Click Track Motion If the Track Motion button is grayed out, make sure your video is selected by clicking its title in the project pane.
7In the main window, click and drag the box-shaped icon onto the location on which you want to track your file's motion.
8In the "Tracker" window in the lower-right corner of the window, click the "Play" button, then allow your video to play. If you don't see the "Tracking" pane here, click Window at the top of the screen, then check the Tracker option.
9It's at the bottom of the "Tracker" window.
10Click the drop-down box at the top of the pop-up menu, then click Null 1 in the resulting drop-down menu and click OK.
11Click Apply in the "Tracker" section of the window, then click OK when prompted.
12Click and drag your file onto the null object in the main window.
13In the project pane that's in the lower-left corner of After Effects, click and drag the spiral icon that's right of your file's name onto the Null 1 title and then release your mouse. This process is called "Parenting", and it will ensure that your file is motion-tracked along with the null object. When you drag from the spiral icon, you should see a line appear behind your mouse cursor.