I've published 20+ modules for HTML5 playback (specifically iPad Safari). Every once in a while when a module loads, the audio plays back fast and makes the voiceover sound like a high pitch "chipmunk". The iPad I've been testing on has the latest iOS 8 update.
I'm using Storyline 1 with the Update 7 (1410.2419) installed.
If I refresh the course, the audio usually fixes itself and then plays fine, but it does require a refresh. The audio will not right itself on it's own.
I'm wondering if anyone else has experienced this, and if so, if anyone has determined why this happens?
The next step is to check out the sample rate of the audio files. I think this article makes a nice analogy for how sample rates can produce the "chipmunk" effect.
Thanks so much for your response Greg. :) I hadn't seen that Studio '09 link. I'll start investigating this further to see if this is somehow related. I do appreciate you pointing this out!
I've had this happen twice. I'm not sure if it was Storyline 1 or 2 but I do believe it was on iOS8. I haven't figured out what caused it, I was just relieved that it sounded normal after refreshing.
John, do you recall if your project that did this had video embedded on any slides? I've been doing a lot of testing the last couple of days and this is one thing I'm starting to wonder. The modules I'm working with have video on numerous slides. I ran a test where I deleted all of the videos and then I couldn't get the voiceover to do this anymore. I'm not totally convinced this is the reason, but I'm trying to investigate further.
Has there been any resolution for this issue? The company I am working for is experiencing this intermittently It will happen with some people's iPads and and won't happen to other people's iPads.
We never found a solution here. I tested, and tested and tested. Tried changing audio settings, shortening audio, publishing with different specs, you name it. I tried different iPads, and different Safari versions, and was never able to find a common denominator. The Articulate staff here said they were not able to replicate the issue from their side, but we've been able to experience it, fairly consistently here. We finally just stopped testing as I felt that we exhausted all avenues. I'd still love to find a solution.
Thanks for reaching out to our support team for assistance Timothy. If you'd like us to follow along, please feel free to share your case number here with us.
I heard back from support, and they were not able to replicate the issue. They did link to an article that says Safari on mobile devices may have issues with HTML5.
I have also been encountering this issue with some Storyline 2 releases. Most of the time the audio is fine, but I just launched a course on an iPad and the audio was slower, as though it had been slowed/pitched down 10% or so. The audio continued to do that throughout all frames. When I closed and relaunched, everything was back to normal. This was also in Safari.
18 Replies
Amber,
Here's a discussion on a similar topic as it relates to Studio '09.
http://archives.articulate.com/forums/articulate-presenter/21355-audio-sped-up-when-published.html
The next step is to check out the sample rate of the audio files. I think this article makes a nice analogy for how sample rates can produce the "chipmunk" effect.
http://www.bulletsandbones.com/GB/FAQPages/TooFast.html
Greg
Thanks so much for your response Greg. :) I hadn't seen that Studio '09 link. I'll start investigating this further to see if this is somehow related. I do appreciate you pointing this out!
I've had this happen twice. I'm not sure if it was Storyline 1 or 2 but I do believe it was on iOS8. I haven't figured out what caused it, I was just relieved that it sounded normal after refreshing.
John, do you recall if your project that did this had video embedded on any slides? I've been doing a lot of testing the last couple of days and this is one thing I'm starting to wonder. The modules I'm working with have video on numerous slides. I ran a test where I deleted all of the videos and then I couldn't get the voiceover to do this anymore. I'm not totally convinced this is the reason, but I'm trying to investigate further.
There was one video on one slide, if that helps.
Hi Amber,
Video on multiple slides or multiple video on one slide? The latter is a limitation of HTML5 as described here.
If you're still having difficulty, can you share a copy of your .story file here with us? We're happy to take a look and test as well.
Thanks John!
Hi Ashley, Just one video per slide, is what I was meaning. I'd love to share a file with you to get your feedback. How can I submit that file?
Hi Amber,
You can attach it here or you can share it with us directly here (this is a private way to share the files).
Has there been any resolution for this issue? The company I am working for is experiencing this intermittently It will happen with some people's iPads and and won't happen to other people's iPads.
We never found a solution here. I tested, and tested and tested. Tried changing audio settings, shortening audio, publishing with different specs, you name it. I tried different iPads, and different Safari versions, and was never able to find a common denominator. The Articulate staff here said they were not able to replicate the issue from their side, but we've been able to experience it, fairly consistently here. We finally just stopped testing as I felt that we exhausted all avenues. I'd still love to find a solution.
I submitted a support case with a link to the course, specific pages in the course it happens at, and a copy of the Storyline file.
Thanks for reaching out to our support team for assistance Timothy. If you'd like us to follow along, please feel free to share your case number here with us.
Good luck! Please let us know if you ever find anything out on your end! I'd be very interested in hearing any solution you may find.
I heard back from support, and they were not able to replicate the issue. They did link to an article that says Safari on mobile devices may have issues with HTML5.
http://www.articulate.com/support/storyline-2/html5-content-is-slow-or-doesnt-work-in-mobile-safari-sl2
Thanks for sharing Timothy!
Were you able to see the same issue in the published output shared with you? Are you utilizing the latest iOS update?
Thanks Tim for sharing that update here.
I have also been encountering this issue with some Storyline 2 releases. Most of the time the audio is fine, but I just launched a course on an iPad and the audio was slower, as though it had been slowed/pitched down 10% or so. The audio continued to do that throughout all frames. When I closed and relaunched, everything was back to normal. This was also in Safari.
Hi Keith,
If you're able to see this regularly, are you able to share an example of this course with our team?
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