Video not playing, shows green screen

I have a storyline file that has fifteen slides. Each slide includes a very short video. The first 10 or so slides/videos work fine. The last few do not play and only show a green rectangle in place of the video (see screen capture below). I have searched and searched the forum to try to find out where the green rectangle is coming from.

The videos are published from Flash as MOV files. I am going to convert the MOV files to MP4 to see if that fixes anything, but in the meantime, if anyone has any information or suggestions they would be much appreciated. Thanks!

14 Replies
Becky Lane


My case number is #00349045.

Based on feedback I received from the customer support engineer, I determined that it might be an issue with my Flash Player. So I did some googling about Flash Player and MP4 videos not playing and came across the page I linked to below. I followed the steps to disable hardware acceleration, and that seems to have fixed the issue.

Ryan Carmichael

I know this reply is incredibly late, but assuming you don't want every user to have to disable their flash "hardware acceleration" just to view your video... I found that moving the video to start with a 1 second delay, it'll make the green screen go away much sooner (within a second or so). I gather It's some sort of buffering issue that happens when the video is a little long. (mine are about 10 mins each).

I ended up starting each video with an image on the top layer, but fading out after a couple seconds, that way it gives the video a second to buffer and the user won't see a green screen. Hope that helps!

Rob Adelman

I know this thread is a bit old, but I am working on a project in Storyline that incorporates branching video scenarios. Ran into the green screen issue stated here. I have a lot of slides in succession that have video. What I did was to insert a blank slide in between slides with video. I set a trigger to go to the next slide when the timeline starts so the learner won't see the blank slide. This appears (so far in my testing) to have solved this issue. The only caveat is that if the learner clicks on the next button on the player in quick succession, you will get the green screen after 3 or 4 clicks. I was already planning on creating custom previous and next buttons in the course and not use the player navigation. I will just set the navigation buttons to show at the end of the timeline.

Ashley Terwilliger-Pollard

Hi Sachin,

This discussion is also a bit older - so if you're still running into issues, I'd want to know a bit more about your set up: 

  • What version of Storyline are you using? What update are you on?
  • Where are you hosting/testing your published output?
  • What browsers and devices are you viewing the output on? 
  • What types of videos have you used, and how do they behave differently when viewed outside of Storyline? 

It's also always helpful if you can share a sample .story file, or screenshots that help clarify the problem in addition to the above information. If you need anything else, let me know! 

Michael W.

I'm having this issue in 2021. I feel like the browser version may be playing a role in my situation as I was unable to re-create the create video screen when I tested this in all my browsers, however, I watched another user have the green screen for all videos on their system.. Not sure how to ensure all my users have their web browsers up-to-date....