TUAW.com has posted a nice tip on faking a transition from video to a slide so that the video doesn’t pause in the transition. This tip only works with object builds, since you’re basically building in a static copy of the next slide, but it’s a pretty good work around to Keynote’sÂ insistenceÂ on pausing the video during a normal transition.
On a side note, we’ve done something similar in the past by actually taking a Keynote movie into Final Cut Pro and adding fancy transitions in that, then exporting the movie and placing that on a Keynote slide. It’s makes for some crazy effects, but it’s a heck of a lot of work. This tip is a much better technique since all it requires is taking a picture of the next slide in its starting state.