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1. Re: Slow Playback in LMS
RodWard Dec 11, 2010 6:01 PM (in response to BalletMom)From your description it sounds like the heaviest part of your presentation is likely to be your audio file.
12-15 slides isn't a lot of filesize, but 15 minutes of audio could mean your students need to download about 10 megs or more.
What quality settings do you have your audio set for output? Is it higher than 64bit?
What preloader settings are you using? Have you tried using a 25% preloader? This would mean that students begin seeing content after only downloading 2 or 3 meg of the total.
If download times are still prohibitively high you'll need to establish the actual bandwidgth your students have. It's not going to be as high as you might think because it will be shared. For this task I recommend a software tool called Charles: http://www.charlesproxy.com/download/
It's shareware. Get a student complaining about slow downloads to install this and then watch what happens when they try to access the course. Charles will tell you exactly what the download speed was.
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2. Re: Slow Playback in LMS
BalletMom Dec 11, 2010 10:53 PM (in response to RodWard)Thanks, those are all good things to think about. The audio is definitely huge. We are going for a little higher quality, a bitrate of 96, but I can take it down and see if students notice a difference. The preload is 100%. I will see what kind of a trade-off I can get between faster starts and not having pauses in playback.


