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antons87216159
antons87216159
Known Participant
December 3, 2020
Question

Audio delayed in published file

  • December 3, 2020
  • 1 reply
  • 241 views

Hello,

 

my current issue is that I have some audio that syncs well with my animation in my timeline preview, but when exporting and viewing the training in my browser, is out of sync.

 

My setup looks like this:

I am working on a slide that uses both a slide-audio, shows some graphics while its playing,

when this sound is completed it pauses the training and shows a continue button to resume,

after clicking that button it plays the sound attached to an object and continues the animation.

 

Generally, this works fine everything up to the pause is perfectly in sync, exactly as seen/heard when previewing in my timeline. Now when the new sound starts playing, the first couple of animations are still in sync, but then by the end of the 62 second audio clip it's completely out of synch.

Previewing my timeline the objects a faded in exactly where they should in relation to the sound. But in the exported file, my last animations are delayed by seconds.

 

I can now guess at which position the animations would have to be to match the sound on the export, but thats very tedious and obviously not as intended.

 

Maybe someone has a clue as to what might be causing this?

 

    This topic has been closed for replies.

    1 reply

    Lilybiri
    Lilybiri
    Legend
    December 3, 2020

    What is causing this? The fact that contrary to SWF output, for HTML output (you don't export, you publish to a totally different folder than the cptx-folder) all audio clips to be played on one slide need to be loaded On Enter for that slide. 

    Avoid having very long audio clips, why not distribute over multiple slides to decrease what needs to be loading. For slide audio, leave a small gap before and after the audio timeline. For object audio, and audio triggered with 'Play Audio', make sure there is some dirty noise before the real audio starts in the clip. 

    Use audio at exactly the quality which is needed, not at a too high bitrate, nor stereo when mono is sufficient. 

    In short: reduce the size of audio clips to be loaded by all means, and leave more time (gap, dirty noise).

    antons87216159
    antons87216159Author
    Known Participant
    December 3, 2020

    Hey Lilybiri, with exporting I was talking about publishing, sorry for the confusion.

     

    My audio clips are not loaded on enter, but where I need them to be played and it's working great across the entire project, where I am using either a combination of slide audio and object audio  or 'play audio' buttons.

    For the rest of your tips, that's exactly how things are set up. Especially as not having a gap between the start and end of slide audio gave me a huge headache on a previous project (where you helped me figure this out!)

     

    Just that in this case splitting things into multiple slides wasn't very useful.

    Lilybiri
    Lilybiri
    Legend
    December 3, 2020

    Are you still publishing to SWF? That is the only format where Audio clips are NOT loading On enter for each slide.

    The 'learner' doesn't have to "see" that something is distributed over multiple slides, don't understand why you say it is 'not useful'? 

    Sorry if I have repeated something you already knew, cannot remember all the questions and users I have been answering. BTW I edited the title of this thread.

     

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