One long-standing criticism I've had (and reported) about MEP's otherwise invaluable Slideshow wizard is that its individual slides (after the addition of pans/zooms/etc) are always too long. Typically 7 seconds or so instead of say my preferred 3-4 secs.
I thought I'd come up with a way to get around that. I have 35 photos to process, so under 'Background music' I loaded a 140s track and under 'Properties & title' I set the option 'Adapt movie length to music'. I expected to get a video of 140 seconds, giving me an average of 4s per photo. But as you see I got twice that.
Does MEP perhaps apply minima and if necessary duplicate the music, despite that contradicting the specification?
Occasionally a simple export followed by an overall duration decrease gives an acceptable result. But usually I have to resort to shortening each slide individually, and sometimes changing the wizard's effect.