You can use Videator to make a slide show video out of still images.

To make a slideshow:

1. Choose New Slideshow from File menu (Shift-Cmd-N)
2. Use the Open File dialog to select a one or more images or a folder containing images.
3. In the Open File dialog, check the settings for image size, image duration, image quality and the type and length of the transitions between images. The initial settings are taken from the Images pane of the Preferences window.
4. Click OK.

Videator will create a video containing those images with a transition effect between each image.

You can also select multiple images in the Finder or iPhoto and drag them into an empty Videator window. Videator will create a new slideshow, using the default settings in the Image tab in Preferences.

Note: The images are added in the order they appear in the Finder dialog. To control the order that the images appear when added to Videator, change their file names before adding them. You can also add images one at a time in the order you want them to appear, or rearrange the images in the Change Slides... window.