Moodle 4.46 with H5P built-in feature (not the plugin)
Boost theme (however, changing theme to Classic does not solve the issue)
I have a branching scenario with a video on one of the pages and as soon as the video loads it starts shaking (does not even need to be playing). I removed all custom css for the theme and in the H5P settings and it makes no difference. Has anyone had this happen?
There was a problem a few versions back, where the 'container' that contained the H5p content was dynamically reacting, so it would load, then resize itself slightly to fit, but that then changed the dimensions, so it resized again - and it basically got into a repeated loop of making itself slightly bigger then slightly smaller which appeared to the user as flickering. If my memory is correct it only did it on certain browsers (sorry I forget which) and it only did when the screen width was within a certain range (e.g. it didn't happen on narrow screens or very wide screens).
The solution was to add some CSS to change the way the container behaved - but as this was a few versions back, I no longer have that code, but if you use the inspect tools to inspect the page as it is doing it, you may be able to work out the culprit, and make the necessary tweak to stop it from happening.
Apologies for being slightly vague here, but it was 4 or 5 years ago that this happened - I thought it had gone away for ever so didn't keep the code that fixed it.
I guess the steps would be to add a branching scenario and then put a video in it while using the Moodle versions I have found that have the issue. That would be 4.4, 4.5 and 4.6. It happens with nothing extra in the boost css or the H5P css. Happens in chrome and edge but not Firefox. Turning off hardware acceleration in browser settings has no effect (that was one suggestion I had on another site).
Dear Mia,
Do you have an example h5p file I can use please? As the one on H5P.org that contains a video cannot be downloaded -> https://h5p.org/branching-scenario#example=439819.
Gareth
UPDATE: Actually, perhaps there was a browser update at our organization because the issue is no longer happening, even without the new custom css I put into the H5P settings to solve it. So I'm going to just need to keep an eye on this. It is working now.
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I can send you an abbreviated version with public domain video placeholders. The videos and the original lesson are pretty big to post. ok to send you a PM in Moodle?
