1: Analyse during import
Choose your footage in the Import window, and in the After Import menu select to analyse the video for stabilisation, people or both.
2: Wait for analysis
Analysing video can take a while and the longer the footage the longer it will take. For longer clips on older machines be prepared to wait a little while.
3: Analyse after import
You may have imported footage normally but later decide that a clip is too shaky. Locate it in the Event Library, right-click and go to the Analyze menu.
4: Choose analysis type
Select whether you want to analyse for people, stabilisation or both. Select multiple clips at once and perform analysis to save repeated key presses.
5: Filter the view
Press the small people icon at the bottom of iMovie’s window and you will see only the analysed footage containing people.
6: Repeat for stabilisation
If a clip needs stabilising, repeat the command, which can be found in the Edit menu. Stabilisation zooms in and crops a clip but can be undone.
7: Temporarily disable stabilisation
When a clip has been analysed, add it to a project and double-click to open its Inspector. Here you can specify that clip smoothing should be on or off.
8: Set zoom level
Using the Maximum Zoom slider, you can alter the amount of zooming to stabilise shaky footage. Try to find a happy medium between cropping and shake.
9: Mark camera pans
Activate Mark Camera Pans and iMovie will display a blue line wherever the clip contains camera movement, making it easier to identify pans.
Click on image to enlarge.