Download and install the FxFactory Pro plug-in from Noise Industry's website.
Launch Final Cut Pro and open the project that contains the clip you want to shake.
Double-click the clip to load it into the Viewer window.
Click the "Effects" menu, select "Video Filters," "FxFactory Pro," "Distort," then "Camera Shake."
Click the "Effects" tab in the Viewer to view the effect's parameters.
Select a preset from the "Presets" drop-down menu.
Drag the sliders for each parameter or click to create keyframes inside the keyframe editor to customize the effect, if desired.
Right-click or Option-click on a clip in the FCP Timeline. Select "Send To" and choose "Motion Project."
Name the project in the pop-up window that appears, choose where to save the project, and check the "Launch 'Motion'" and "Embed 'Motion' Content" check boxes. Click "Save" when you are finished. The clip will open in Motion.
Click the "Add Behavior" button on the toolbar, select "Shape" and then "Wriggle."
Click on the "Inspector" tab in the Inspector window, then select the "Behaviors" sub-tab. You will see the parameters of the Wriggle behavior.
Drag the "Amount" slider to control the maximum extent of the shaking or enter a value in the combo box.
Select the option from the "Apply Mode" combo box that best describes how you want the behavior to combine with the values of other behaviors affecting that parameter.
Drag the "Frequency" slider to control how often the shaking occurs or enter a value in the combo box.
Drag the "Wriggle Offset" slider if you have this behavior applied to multiple objects. This offsets the effect so that the objects do not wriggle in sync.
Drag the "Noisiness" slider to add additional randomness to the "Frequency" parameter.
Check the "Link" check box to make the behavior always acts proportionally to the size and position of the clip.
Select the parameter you want to apply the effect to from the "Apply To" drop-down menu.
Adjust any other parameters as needed.
Save the project.
Click the "File" menu in FCP and select "Import," then "Files." Choose the Motion project file.
Replace the still clip in your Timeline with the shaky clip from Motion.
Set an "in" point at the beginning of the clip you want to effect in FCP. Set an "out" point at the end.
Click on the "File" menu, choose "Export," then select "QuickTime Movie."
Name the file, choose a location in the pop-up window that appears and click "Save."
Launch After Effects.
Click the "File" menu, select "Import," then choose "Files."
Choose the exported FCP clip in the pop-up window that appears and click "Open."
Drag the clip into the Timeline, then click the triangle next to the clip name to expand its properties.
Drag the clip into the Timeline, then click the triangle next to the clip name to expand its properties.
Right-click or Option-click the stopwatch icon in front of the parameter's name. The expression line will open.
Type, "Wiggle()."
Inside the parentheses, type a numerical value to describe how many times per second the parameter should wiggle. Follow this number by a comma and another number that describes the intensity with which it should wiggle on a scale of zero to 100. For example, "Wiggle(3,50).
Experiment with different values until the clip shakes how you want it to.
Click on the "Composition" menu and select "Add to Render Queue."
Click the underlined file name next to the "Output To" heading to enter a custom file name and target location.
Click the underlined text next to the "Render Settings" heading to customize the settings, as necessary.
Click the underlined text next to the "Output Module" heading to customize these settings. Make sure that the format is set to "QuickTime Movie."
Click the "Render" button to render and export the sequence.
Click the "File" menu in FCP, select "Import," then choose "Files." Choose the file you exported from After Effects.
Replace the still clip in the Timeline with the shaky clip from After Effects.