We've done a lot of time tests before, but I didn't realize how much time you can save by exporting a slideshow with pans and zooms to DV-AVI first, then exporting the DV-AVI to DVD.
It took 38 minutes to *transcode* a five-minute slideshow during an "Export to DVD." That 38 minutes doesn't include transcoding the menu, compiling, or the physical write to DVD. The slideshow had 44 stills with pans and zooms and some transitions and soundtrack to match. All the stills were less than 1024x768.
In contrast, it took 16 minutes 20 seconds transcoding time when I exported the slideshow to DV-AVI first and then exported the DV-AVI to DVD. I did not render a preview beforehand. The export to DV-AVI took 9 minutes 20 seconds. The transcoding time for export from DV-AVI to DVD took 7 minutes.
That's a lot of time saved -- 21 minutes -- for each 5 minutes of slideshow.
I just dropped the DV-AVI on the track above the stills and disabled one of the audio tracks.