I am trying to use two half second layers to simulate an elapsed timer for each slide and it works perfectly on a desktop/laptop computer. The only issue is that these courses need to be played on iPad's running iOS 5 & 6. On the iPad it seems the layers cause flickering as you can see the screen flicker twice before the elapsed timer increments once. I was wondering if there was a way around this so that the elapsed timer can be kept.
To my knowledge, this is not a known issue. Would you mind sending us a copy of your .story file within a Support Case so that we can troubleshoot the problem? Thanks!
I can verify the issue. It apparently is only the HTML5 player and when switching layers. To my knowledge it doesn't matter if they are automatic via the timeline or another trigger, anytime I have moved between layers (not slides) on the iPad it flickers once or twice. (I haven't figured out the differences between one or two yet). Let me know if a solution materializes!
It doesn't look like we've received a Support Case from Ryan yet on this issue, so if you would be willing to submit a Support Case and include a copy of your .story file, that would help our troubleshooting process tremendously. Thanks!
OH!! I am having this exact same problem! Please let me know if anyone finds a resolve...or I can submit a report too.
It happens on question slides too, when the results layer appears. HTML 5 on the iPad really seems to have problems with layers. I've found if there's much more than 4 layers on the slide, it has major trouble loading.
I am having the exact same issue. I use a lot of layers and the flickering is a major distraction. I will submit my storyline file also. I wanted to call the problem "flashing" and could only find problems relating to Flash. Flickering is the term I used to find this string!
The flickering that you're seeing is caused by a canvas redraw that must occur on the iPad in Safari. Essentially, in order for the layers to appear, we must invoke a redraw of the canvas in HTML5. Fortunately, we''ll be able to handle this better in a future update of Storyline.
Great to hear Brian. I know that the focus right now is probably on Studio, but do you guys have a tentative date for the next release of storyline? Would the fix go in the next update or as you said a 'future' update? Lots of interested parties at work here
I've also begun publishing for mobile and see this flicker. I've worked around by removing layers and navigating in a more linear fashion, but it takes away from some design.
Is there an update on the update or another method i could use to avoid this issue? I have tested via a mobile app and not in safari, but it appears the same rules apply here.
Has this been resolved with the recent version release of SL? I have a course that is still flickering even after a re-publish with the new version. Is anyone else still having this problem? My courses are running on a Moodle with a Drupal front end (I think that's the LMS lingo).
We're also experiencing flickering on the iPad. Unfortunately we have built around 2 hours of content so to go back and change all the layers to states would be quite a task and quite limiting in places.
I know it has been asked before but it would be really helpful to know if/when a fix for this is being rolled out so that we can plan accordingly.
Actually, the same could be said for all Storyline updates/fixes. Greater transparency about what's about to come would enable all Storyline users to plan ahead and be as straight forward as possible with ther clients.
I may have found another reason for the flickering. In an interaction I was using there wasn't anything selected on the base layer so it was trying to constantly decide if it should be on the base layer or another which may have been causing the flickering. You might try going through each slide to confirm there is something holding the content/learning to the base slide and then they click something specifically go to another layer. Basically, I had a layer and the base layer 'selected' at the same time so SL was trying to accomodate both ... does that make sense to you Articulate Developer?
I also find that if you have 'grouped' objects on the timeline, that this also causes 'flashing', thus we avoid using grouped objects all together. Not sure if this has been resolved yet, but may be another thing to look for.
Has this re-draw issue been fixed with update 4? It's happening to me and my Storyline2 is up to date. Can anybody help? It's happening with mp4's and slide layers.
Thank you for you response. I was able to fix the flickering issue by changing the logic of my videos and slides but now on my Android device, the videos are coming up black while they load and than they play. Some times they play right away after the black screen appears, other times they lag and seem to fast forward causing the items that later appear in my slide to appear before they're intended to causing the animation to not be smooth. I will submit my .story file for the team to take a look at.
24 Replies
Hello again Ryan, and welcome to Heroes!
To my knowledge, this is not a known issue. Would you mind sending us a copy of your .story file within a Support Case so that we can troubleshoot the problem? Thanks!
I can verify the issue. It apparently is only the HTML5 player and when switching layers. To my knowledge it doesn't matter if they are automatic via the timeline or another trigger, anytime I have moved between layers (not slides) on the iPad it flickers once or twice. (I haven't figured out the differences between one or two yet). Let me know if a solution materializes!
Good Afternoon Dylan, and welcome to Heroes!
It doesn't look like we've received a Support Case from Ryan yet on this issue, so if you would be willing to submit a Support Case and include a copy of your .story file, that would help our troubleshooting process tremendously. Thanks!
OH!! I am having this exact same problem! Please let me know if anyone finds a resolve...or I can submit a report too.
It happens on question slides too, when the results layer appears. HTML 5 on the iPad really seems to have problems with layers. I've found if there's much more than 4 layers on the slide, it has major trouble loading.
I am having the exact same issue. I use a lot of layers and the flickering is a major distraction. I will submit my storyline file also. I wanted to call the problem "flashing" and could only find problems relating to Flash. Flickering is the term I used to find this string!
I see the same behavior, I put it down to the HTML pages loading and reloading.
I've seen the same behavior on HTML5 on iPad.
Hi everyone,
The flickering that you're seeing is caused by a canvas redraw that must occur on the iPad in Safari. Essentially, in order for the layers to appear, we must invoke a redraw of the canvas in HTML5. Fortunately, we''ll be able to handle this better in a future update of Storyline.
Thanks for the update Brian! That's really helpful to understand what's going on
Great to hear Brian. I know that the focus right now is probably on Studio, but do you guys have a tentative date for the next release of storyline? Would the fix go in the next update or as you said a 'future' update? Lots of interested parties at work here
I've also begun publishing for mobile and see this flicker. I've worked around by removing layers and navigating in a more linear fashion, but it takes away from some design.
Is there an update on the update or another method i could use to avoid this issue? I have tested via a mobile app and not in safari, but it appears the same rules apply here.
Hi Ryan!
No concrete date on that update, but we're getting close. Best way to hear about it is through our Word of Mouth blog. Thanks for hanging in there
Hi all,
Has this been resolved with the recent version release of SL? I have a course that is still flickering even after a re-publish with the new version. Is anyone else still having this problem? My courses are running on a Moodle with a Drupal front end (I think that's the LMS lingo).
Thanks!
Jennifer
Hi Jennifer!
The latest update has indeed "improved HTML5 output to reduce redrawing the canvas in some browsers". Meaning, it's been reduced, but we haven't been able to eliminate it completely.
You can download the newest update here.
Thanks!
Hi Ryan.
While not ideal, I have used states instead of layers to implement without flicker on the ipad. This produces a much smoother display.
I have used screen hotspots to display different states instead of displaying different layers of information that I would typically use.
Cheers!
We're also experiencing flickering on the iPad. Unfortunately we have built around 2 hours of content so to go back and change all the layers to states would be quite a task and quite limiting in places.
I know it has been asked before but it would be really helpful to know if/when a fix for this is being rolled out so that we can plan accordingly.
Actually, the same could be said for all Storyline updates/fixes. Greater transparency about what's about to come would enable all Storyline users to plan ahead and be as straight forward as possible with ther clients.
I may have found another reason for the flickering. In an interaction I was using there wasn't anything selected on the base layer so it was trying to constantly decide if it should be on the base layer or another which may have been causing the flickering. You might try going through each slide to confirm there is something holding the content/learning to the base slide and then they click something specifically go to another layer. Basically, I had a layer and the base layer 'selected' at the same time so SL was trying to accomodate both ... does that make sense to you Articulate Developer?
Thanks for sharing that Jennifer.
You can read more about the issue here, but it is actually a limitation of Mobile Safari.
I also find that if you have 'grouped' objects on the timeline, that this also causes 'flashing', thus we avoid using grouped objects all together. Not sure if this has been resolved yet, but may be another thing to look for.
Thanks for sharing your experience with this as well Jeff
Has this re-draw issue been fixed with update 4? It's happening to me and my Storyline2 is up to date. Can anybody help? It's happening with mp4's and slide layers.
Hi Omar! This thread is a bit dated and was related to Storyline 1. Could you share details and your .story file with our team here to take a look?
Hi Leslie,
Thank you for you response. I was able to fix the flickering issue by changing the logic of my videos and slides but now on my Android device, the videos are coming up black while they load and than they play. Some times they play right away after the black screen appears, other times they lag and seem to fast forward causing the items that later appear in my slide to appear before they're intended to causing the animation to not be smooth. I will submit my .story file for the team to take a look at.
Best,
Thanks for the update Omar :)
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