Timeline and Video doesn't match on the leson published on LMS

Hi Matteo, 

Are you scrubbing through the video or timeline, or using any of the player seekbar elements to see this? How is the video inserted (web object, from file, etc.)? 

You could also test outside your LMS to see if there is any lag there. A good testing platform is SCORM Cloud (it's free and pretty easy!) and that'll help narrow down where the issue is. You could also try a few other browsers to see if the behavior is different between them.

Let us know how that testing goes for you! 

Hello Ashley, sorry for the late reply, I didn't notice you answered me.

The video is inserted "from file" and I'm using the player' seekbar, the point is that it happens "sometimes" not always on the same slide and not on every browser, but mostly on Google Chrome or Mozilla, not at all on M.Edge, instead.

We noticed that it happens especially if you starts the presentation and leave the browser on background, making other operations at the computer.

We experience even another problem sometimes, some users cannot see the html5 scorm on latest versions of IE, and need to set the compatibility with our website and older versions of IE.

Do you think these two issues are related? Can the problem be depending from the LMS? Or the used scorm version (2nd, 2004)?

I'll try Scorm Cloud in the meanwhile and check if these things happens even there,

thank you very much!

Hi Matteo,

No worries on the delay - we're still here. 😀

HTML5 content for Storyline 2 is supported in Chrome and Safari on desktop as you'll see here in the viewing requirements. So it could be connected to trying to  view the HTML5 output in those browsers? Can you see if the problematic browsers will play it back in Flash too? 

SCORM Cloud is always another good testing option to determine if there is an issue in the LMS too.

Let me know if you need anything else. 

Unfortunately it happens on Scorm Cloud too, and I tried on four several Computers on IE11, Chrome, Firefox and Edge browsers, and it happened on every each one.

It still going on the same story: if you play the lesson on background, not always on the same slide, the seekbar goes slower than the video, so it finishes a lot of seconds (even minutes) after the video'time.

I questioned the Lms Forum too, and it lookk that the IE11 compatibility it depends from the LMS, but not this other problem.

Thank you again for your precious support

Hi Matteo,

Could we get a look at your .story file and a link to your course? I'd like to see the behavior and do some testing around it.

Does it also happen when you're previewing the course or just once you've published it? Are you using the seekbar to advance things, or it just is out of sync based on normal playback?

You can upload a file here using the "add attachment" button. 

Sorry for the late, again.

I attached here a shorter version of the file I uploaded on Cloud Scorm too, the issue happens especially on Google Chrome, the seekbar is locked.

Thank you again

Thanks Matthew - you said you were using Storyline 2, but when I tried opening it with that it told me it was created in a newer version.

I wasn't sure if you were using Storyline 3 or 360 - but I first published it to Articulate Review from Storyline 360 so you could take a look at it here.  I do most of my testing in Chrome, which is where you saw the behavior. Do you know if you're on the latest update of Chrome? 

I let it run in the background there, but didn't notice the audio going out of sync with the slide timeline.  

I also published it to SCORM Cloud here. I also didn't notice it being out of sync - but since sometimes it was running in the background I couldn't see it either. 🙃 

Want to give those two a test for me and let me know what you see/hear? If you can point to a specific slide or way I can try and see the same thing that would be helpful! 

Sorry yes, I used Storyline 360, don't know even why i wrote "2"...

It actually happens not only on my computer, myabe it can depends from the internet connection or provider...

I gave a gllimpse to the file on Review and it actually happen again...I'll try to make a video to show you what's goin here....

Ok here is the screen record of what's going here...

https://360.articulate.com/review/content/e76ac91d-3d30-4462-9e80-9240e8d79e10/review

it's clear since the first seconds, the timeline waits for me if I go in background, then it continue if i go back on that window, and the video stops or ends first before the time line ends and it come up that you need 4 hours to whatch a lesson of 1 hour...Maybe is the file, but ita looke happening to other lessons too...

Sorry to still bothering you...

Hi Matteo, thanks for the screen recording. That was really helpful! 

We're working through an issue in Storyline 360 where the player seekbar goes out of sync with audio/video when a user clicks on another browser tab in HTML5. The Flash version should work normally, so I'd recommend publishing with Flash/HTML5 until we have a fix in place.

I'm really sorry this is happening, and I appreciate you giving us a head's up. We'll let you know as soon as we have more information. 😊