Storyline 2: .FLV files showing black background

I recently upgraded to Storyline 2.  We have a subscription with eLearning Brothers and I added a .flv file to my project.  However, when  preview or publish the video displays a black background.  This was not the case in Storyline 1.  Can someone please advise on how to correct this or can it be corrected.

I have attached sample.

15 Replies
Ashley Terwilliger-Pollard

Hi Omar, 

I do see the black background on the slide itself - not just when previewing, so it's hard to tell that the file is transparent normally. With that being said, I do see an issue reported to our QA team that FLV files with alpha transparency don't work as expected in SL2 as they did in SL1. The current workaround is to insert any FLV movie with transparency in SL1 and import the slide into your SL2 project to retain the FLV transparency.

Omar Wilkinson


Is there a timeline on a solution to this? This played a huge role in our training material and would love to get it back on stream urgently. We continue to use Storyline 1 for these items though we have also purchased Storyline two.


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Ashley Terwilliger-Pollard

Hi Omar,

First, I wanted to let you know that when you reply via email your signature is included here in the post. You're welcome to edit the post and update that if you'd like to remove it. 

I don't have a timeframe to offer unfortunately, but we'll keep folks posted once there is additional information to share. I've shared this thread with our QA team and continue to keep them updated with details regarding the number of users who are being impacted. 

Diane Boewe

Hi Leslie,

Thank you for your response. I am working in the latest version of Storyline 2.

I’ve attached a sample Storyline File. When viewed in preview, the background is transparent, however, after it is published the background is black.

I look forward to hearing from you. Thank you!

Diane Boewe

Leslie McKerchie

Hi Diane,

Can you tell me about how your are publishing/viewing the content?

As mentioned above, this was corrected in an update. Videos with Alpha Transparency are not supported in HTML5 as you can see in this chart.

If you are experiencing something else, feel free to share the .story file so that we can take a closer look.