Storyline 2 Max File Size

Sep 14, 2015


I have a Storyline 2 file that is around 500 MB, mainly due to embeded movie files, swf and mp4s. I have viewed a few discussions that said once the SL file gets over 1 GB it will start to react slower. However, I am having this problem and I am not at 1 GB yet. It takes very long to open in a browser and reacts very slowly. Is there anything I can do about this or do I just have to deal with it?



14 Replies
Brian Allen

I think that there are two discussions here...  One is the performance of the authoring environment when editing large Storyline files, and the second discussion is the performance of the published Storyline content in the browser, which it seems you are referring to above.

For the authoring environment, some factors that will impact this are the specs of the machine you're using - CPU speed, amount of RAM, etc.

For the published content, impacting factors can include browser, Flash or HTML5 output, internet speed/bandwidth, size of embedded videos, etc. 

The size of your embedded videos will greatly impact the loading time for your published content due to preloading.  Whenever possible I usually try to break up video into chunks no longer than 5 minutes (I actually prefer 3 minutes or less).

If you're trying to load large videos slow load times should be expected.

A potential solution, if breaking the video up isn't an option, would be streaming your video using youtube or vimeo and embedding the video into your Storyline content that way.

Hope this helps

Mike Ganci

Thank you for your response. 

The videos are all shorter than 30 seconds and they are all roughly 50 mbs. Also, I can rule out internet speed since it is being run locally on many different computers. It does work better on some computers which is due to the RAM/CPU speed however, I will not be able to determine the computers it will be used on in the future so that really is not a good option for me.

I have even tried lowering the quality of the publish which works terribly I might add, the custom setting is 5/9 video quality, I lowered it to 1 and it only saved me 4 mbs, from 509 to 505.

More or less I think I am screwed, do you see any performance different based on the video format between, swf, mp4s or mov files?


Brian Allen

Locally via a network drive, or locally on each individual local machine?

If you're playing back locally via web published files you sometimes run into Flash Player security issues, as the published content really works best from a web URL, even if it is intranet.

If you're seeing playback issues and playback is local from a shared network drive set up that would be a huge red flag, as you potentially run into the same flash player security issues and playback from shared network drives is notoriously sketchy at best.

Ashley Terwilliger-Pollard

Hi Mike,

It looks like Brian has you covered here on a number of issues - but I was curious, how are you publishing the courses? If as he mentioned you're publishing for web and playing locally that may be a part of the issue you're running into. If they need to be distributed locally I'd look at publishing for CD or another local source

Also here is additional information on how Storyline preloads content to help prevent playback delays. 

Nicky A

Hi! I am not sure if this is the correct forum for this question but I couldn't find it anywhere else so here goes!

I typically work with very large storyline files - sometimes around 2GB. I am upgrading my machine with more RAM (32 GB total) as well as a second SSD dedicated specifically to project files in hopes this can clear up some of the lag I am having. Ultimately, I am wondering if there is a cap set on storyline 2 in terms of performance? i.e. Can storyline 2 work only so fast? Has anyone found a different way to minimize editing lag when working with large files or is a RAM upgrade my best option?

Any help would be appreciated, thank you in advance for your time.

Christie Pollick

Hi, Nicky -- Thanks for reaching out here! I will defer to your fellow community members to share their own advice and opinions, but I thought I might stop in to pass along a few other discussions that may be of interest:

And this info related to machine/hardware set up:

Hope that helps! :)

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