Slideshows are really quick and easy in Lightroom once you have a preset or two configured. And they’re easy to export to video too.
However, an issue that might bite you if you want to put them on a DVD or incorporate it into another video project is that the exports are at a 30 fps frame rate.
You’ll need 25 fps for a PAL DVD or 24 to integrate with that cinematic video you’ve been shooting on your 5D2/3.
So based on this post from Lightroom News which dealt with exporting video from time-lapse photography, I was able to put together a few presets that let you export video in 720p at 24 or 25 fps.
Download the presets here: Lightroom_720p_24_25_fps.zip