Keynote Export with transparent background to - dissolve effect - fade throughout black not transparent

Hello,


I'm working on the presentation which I would like to export to video (.mov) with transparent background. The export it self works perfectly and I got the file without background, but the thing is that all effect that include some subtle dissolve or fade effects, appearing on the screen throughout black.


I expect that behaviour as error as it should be clear alpha for all effects.


Do you have any ideas of how to fix this or find a solution make the black fade at the beginning of the animation disappear?



Posted on May 11, 2022 9:29 AM

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3 replies

May 12, 2022 12:07 PM in response to rzmota


all effect that include some subtle dissolve or fade effects, appearing on the screen throughout black.

I don't understand what you are doing from your description.


I regularly create a transparent background on slides to export to a movie file. There are text, images and shapes which build on to the slide one after the other and have no problems. Is this what you are trying to do?



  • Which specific animation are you using?
  • Are you using the Build Order to ensure the layer order is correct?
  • What is the MacOS?
  • What version of Keynote?



May 12, 2022 1:50 PM in response to Gary Scotland

Ok, here is the problem:


  • I create any type of the animation (either for the object effect or slide transition) that include a transition with a dissolve / fade type of transition.
  • I export this to video with transparent background
  • I got the video with alpha channel where the transition starts with black color (not the alpha/opacity = 0%)


I recorded a quick video that illustrate the problem.


This is not how I would expect the transition to be made, because when you add a background in keynote it actually goes correctly, so starting animation from opacity: 0% (not black)


https://youtu.be/OxGy8tk3p44


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Keynote Export with transparent background to - dissolve effect - fade throughout black not transparent

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