Make Video from Slides

iMovie is perfect for the job and is easy to use. You already own it, so that is a bonus. Just do a search for tutorials as there are hundreds of them out there on how to do it. You can add audio as well. I do it all the time. Like I said already, really simple to use.

 

1) need to get those slides scanned and put into digital format.
2) find the application you wish to use to make a video (movie).
3) make sure the format your slides are scanned in work with that video application and if not, convert them.

There is plenty to be said about making adjustments on the digital file of the slides related to aspect ratio (crop) and testing some of the slides when put into video to see how colour and contrast are portrayed (so you can further adjust).

 

FotoMagico provides quite powerful slideshow creation from photos (or scanned slides) and with audio/music. It's not cheap, but can create impressive presentations. Whether it can be considered worth the value compared to iMovie (which I agree works fine and you already have) depends on how regularly and what events you night be making slideshows for.

 

"Digital format" is any image format, JPEG is probably the most common but could for example be GIF, TIFF or PNG. As was said above you need to get the physical slides scanned, then whatever digital image format the scanner can save as should be useable to then make a slideshow movie

Both FotoMagico and iMovie can then accesses pictures from iPhoto or Aperture libraries (not sure about new Photos app library as I don't use it), or directly from wherever they have been saved.