Audio track not playing on some Learner computers
Aug 17, 2016
Calling all sleuths!
A number of users are not able to hear the audio for lesson objects where the audio (narration) file is imported into the SL2 slide. These same users are however able to hear audio when it's embedded in an mp4 video file.
All users experiencing the problem work for the same client company, and the problem occurs on company provided laptops irrespective of whether the course is accessed while on the company of premises or some other location. However, many of these users' colleagues at the same company do not experience the audio problem. No users from other client companies have reported lack of audio.
The client company has no policy regarding which browser to use, so IE, Chrome, Firefox are all in use, and in some cases, users have multiple browsers installed. But, we have found no correlation between those experiencing the problem and choice of browser, or single/multiple browser. All laptops investigated have recent versions of Flash installed.
Just to rule out the possibilities, we've tested a version published without HTML5 checked, with other audio formats as inputs (mp3, m4a), with the audio track shifted so as not to start at zero, and with a trigger to start the audio media when the timeline starts. None of these permutations uncovered the culprit.
The client is our largest and most important, so we are keen to resolve this! For now, the workaround is to run the audio files through a video editor and create mp4 files with no visual component. Not so elegant, but at least we're not stuck.
What are we missing? Any ideas and tips are warmly welcomed!