To change the preview monitor size
- Select video on the storyboard/timeline or in the Contents pane.
- Do one of the following, depending on the preview monitor size you want to choose:
- To preview the video at 320x240 pixels, on the View menu, point to Preview Monitor Size, and then click Small (320x240).
- To preview the video at 640x480 pixels, on the View menu, point to Preview Monitor Size, and then click Large (640x480).
This option is available when there is enough available space to resize the monitor without resizing the storyboard/timeline.