The most simple slideshow is just a sequence of pictures with each being displayed for the same amount of time.
I would also like to make a sequence, but more complicated with respect to the duration:
I want the first picture to have a duration of 1 second, the next a little bit less than a second, the next even a little shorter, so that the sequence starts slow and gets faster towards the end.
I do not know how to do it, the only thing I can guess is, that the duration for each picture could be calculated by a function like
duration = 1/picture_number duration = 1 - (picture_number/picture_total)
or in a script:
duration=1 while [duration > 0] do duration=duration*0.99 done