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How to create a photo slideshow that gradually speeds up and loops?



  • Hi All.

    I'd like to create a slideshow of a set amount of images that loops and gradually speeds up. 
    My actor workflow is:
    Envelope Generator > Curvature > Picture > Projector
    I can use the envelope generator actor into the curvature actor to gradually speed up but how do I loop the pictures?
    Thanks for any help.
    Best,
    Daniel




  • you got many way to do it...the easiest way is to use a wave generator with saw wave and really slow freq

    then just adjust min and max on picture player accordig to your picture bin

    bca040-looped-slide-show.izz



  • Thank you for your response. 

    Is it possible to loop the slideshow but not start curvature from the beginning with each loop? So as the slideshow loops, it gradually speeds up without reseting the speed?


  • you could use a counter that iterates through the number of pictures you have, being driven by a pulse generator. Attached is screen shot (don't have dongle at home so can't save).

    You need to set the counter to wrap to get it to loop back round, and set the min value to 1\. Bin counter will give you number of clips in the bin, or set it to a value manually if you don't want to use all the pictures in the bin

    7fb67c-slideshow.tiff



  • I would make a slideshow video file(PhotoJPG codec) and manipulate the speed in Movie Player.



  • Maybe something like this would work for you. Reset by trigger 0 to current value. And regulate acceleration by freq on first Pulse Generator and amount in Float Counter. To trigger pictures look at nick's suggestion above. 70124d-speedup-trigger.izz


  • Tech Staff

    +1 on "I would make a slideshow video file(PhotoJPG codec) and manipulate the speed in Movie Player."

    Unless there is a specific reason you have to use Isadora for this i'd make it externally and then manipulate the video in isadora... this is what Isadora does best IMO.

  • Tech Staff

    So many ways to do this..
    maybe a pulse switching triggering a counter,

    while an envelope slowly increased the speed of the pulse.

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