Performance issue with MP3 files
Apr 28, 2015
By
Ben Kur
Hi,
I have a working project on Storyline that will be importing mp3 audio files to the file. The thing that I am worried about is the number of mp3 audio files imported to the Storyline file. It will be total of 30+ audio files. This is only the first module. I am already breaking down this module to four small modules, and still the amount of mp3 is still a lot. So I would like to find out in advance what kind of issues that I should be aware of, and how to tackle those issues. Any advices, or suggestions are welcome. Thank you in advance.
10 Replies
After publish storyline only loads 3 slides ahead so performance shouldn't be an issue. I imported 120+ MP3s into a courses yesterday and all worked well.
That is a relief to hear. The four modules may end up with that many MP3 files. Can you share what are the settings of your mp3 file? Are they 44K or 22K, 32bit or 16 bit rate, and any other settings?
16bit 44K seems to work best, the recommended setting is to use 16 bit 44 KHZ PCM WAV files
Glad that Phil was able to assist you here Ben. Good luck with your project.
A tip if you have to import a lot of audio: Add the import audio button to your Quick Access toolbar:
This saves having to click the Insert ribbon before clicking import audio. It's the little things.
To add it, right click the original button Import Audio button, and choose "Add to Quick Access Toolbar."
Great tip Will :)
Something else you should be aware of is that with MP3 files in particular you will notice a difference in playback quality when imported into Storyline. I do not think Storyline causes the issue, but rather amplifies it. The problem is caused by the nature of the MP3 compression which causes a loss of bass. This can be easily corrected with a third party free app like Audacity to add extra bass to each file before importing to Storyline.
Thank you very much for all the tips. I do wonder about one thing. This is for Phil. How was the performance with that many MP3 files on ipad Safari? or the Articulate Player app? We might have to go with iPad Safari due to no support of Tin Can api. I really appreciate if you can give some insights. Thanks.
Storyline 2 seems a lot better with audio, some storyline 1 courses can get bogged down with a lot of audio on layers on iPads
Thank you Phil. I really appreciate the feedback.
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