You can create an iDVD project or add your slideshow as a movie to an existing iDVD project.
Choose Share > Send To > iDVD.
Choose an option from the Video Size pop-up menu:
Standard: Exports the slides for viewing on a standard video display.
Widescreen: Exports the slides for viewing on a widescreen video display.
Choose an option from the Playback Uses pop-up menu:
Manual Advance: Viewers advance the movie by clicking the mouse or Right Arrow key, or by pressing the Space bar on the keyboard.
Recorded Timing: If you recorded your slideshow (as described in Recording a Voiceover Narration), your slideshow movie plays using the timing you recorded.
Fixed Timing: Viewers have no control over the speed at which the movie advances; the movie plays using the timing you specify in the next step.
If you choose Fixed Timing, specify how long slides appear and the how long it takes to complete object builds by typing values in the Slide Duration and Build Duration fields.
Slide Duration: How long each fully built slide remains on the screen after the last object build is complete.
Build Duration: The number of seconds between the beginning of one build stage and the next in each object build. There is no delay between the moment a slide first appears on the screen and the first stage of an object build.
To include the slideshow soundtrack or the recorded audio, select the Audio checkboxes.
Click Send, type a filename, specify a location (if you don’t want to store the movie in your Movies folder), and then click Export.