Transparent GIF color

Jan 02, 2023

I am trying to insert a GIF into SL, which works fine unless I set a transparent color for it, in which case attempting to preview the project freezes SL entirely, to the point where I can't even end SL from Task Manager (!!) - I have to completely restart the computer. Can anyone help me with this?

8 Replies
Joe Tansengco

Hi Jim,

Sorry to hear that you ran into this snag! 

I tried to replicate the behavior using a GIF that I had on hand, but I wasn't able to make my Storyline 360 installation freeze after doing the following: 

  1. Added the GIF as an image to the slide
  2. Added a fill and set transparency to a certain value

  3. Previewed the slide

Would you mind reviewing the troubleshooting steps that I did to see if I need to change anything in order to be able to properly observe the behavior? I've attached the sample GIF that I used for testing so we can use the same GIF files. 

If you feel like the behavior is specific to your Storyline 360 installation, try doing a repair to see if this helps! 

Jim Owen

It does not matter if it is a new file, and yes, it is the latest version of SL.

Joe, when I use the gif you supplied everything works as expected. When I use my gif, I can reproduce the issue. I noticed that the GIF was 1280 x 720 and 30 fps, so I re-rendered it from Cantasia at 15 fps and 640 x 360, while made for a file similar in size the the gif you supplied. In that instance I was able to preview the project, but the gif file had many video glitches, popping in and out randomly. Here is that file.

Joe Tansengco

Hi Jim,

Would you mind sharing the unedited version of your test GIF so we can take a closer look at what's happening? The issue might be isolated to GIFs that have a specific resolution, so I'd like to do a test using your image file specifically. You can share it here, or in private by opening a support case with our team here. 

Jürgen Schoenemeyer

i have "found" it on google, probably the graphic designer used Adobe Animate

how it could be done

  • create with Adobe Animate your animation
  • File > Export Video/Media

=> for every frame one png is exported

now use APNG Assembler to combine the files

important: use Compression Method "Zopfli" -> very slow, but the only compression, which seems to work with storyline

here are more infos to the frame rate settings (-> Delay, sec)