Onset delay for playing audio on a slide

[JACanterbury]

Thank you David - I've got it working following your suggestions.

Although it's straightforward in principle, a few of the settings are 
crucial so for the records here's what I did to play video and sound 
simultaneously (ie overlapping) but with them not starting at the same time 
(in my case starting the audio after the video has starting):

- setup a SLIDE with video sub object on it to play your video
  - set the duration of the SLIDE to be the time delay you want until your 
video starts (ie NOT 'infinite')
  - set the properties for the Movie object as follows:
      - 'End movie action' : Terminate
      - 'Stop after' : No   [this means the video keeps playing after the 
slide finishes] (default is yes)
 - AFTER the slide, insert a SoundOut object on its own onto the Session 
Proc timeline and set this to be the sound commentary you want to accompany 
the video
     - set the 'Duration' to 'infinite'
     -on the general tab, set the 'End Sound Action' to 'None'

Notes: in this situation, if the audio finishes first, then the video keeps 
playing to the end but if the video finishes first, then the audio is 
truncated.

On Friday, 24 August 2012 14:39:20 UTC+1, McFarlane, David wrote:
>
> John, 
>
> Um, yes.  Starting an audio file with some delay after starting a 
> video equates to starting playback of the two files 
> sequentially.  You are merely stymied by seeing your video stop when 
> the sound file starts.  My guess is that you do not know about the 
> Stop After property of MovieDisplay and SlideMovie objects.  This is 
> set to Yes by default.  Try setting it to No and then do as I 
> suggested earlier, and see how that works for you.  I cover all this 
> in my online E-Prime course. 
>
> -- David McFarlane 
>
>
> At 8/24/2012 06:41 AM Friday, JACanterbury wrote: 
> >Thanks for the reply David however, if I've understood your 
> >suggestion correctly, all this will do is play the video and audio 
> >files sequentially (pausing the video early after the 'duration' has 
> elapsed). 
> > 
> >My reason for wanting to delay the start of the audio playing was so 
> >that it would run at the same time as the video but the video 
> >segment is longer and I didn't want the audio to start straight away 
> >but to be delayed a short while ~2 seconds. 
> > 
> >I have a lot of audio/video files and don't want to edit the audio 
> >files to insert a blank gap at the beginning of each. 
> > 
> >If anyone has any other suggestions, I'd welcome them. Equally, if I 
> >come up with a workaround I'll post back, 
> > 
> >Thanks, 
> > 
> >John 
> > 
> >On Thursday, August 23, 2012 6:42:34 PM UTC+1, McFarlane, David wrote: 
> >John, 
> > 
> >This sort of question keeps popping up.  People get the mistaken 
> >impression that each sub-object on a Slide should have its own timing 
> >properties.  But a Slide, by design, always presents all of its 
> >sub-objects simultaneously. 
> > 
> >To present stimuli with various delay offsets, simply present the 
> >first stimulus with a Duration equal to the desired delay, and then 
> >present the next stimulus.  In your case, present the Slide with your 
> >video, but no audio.  Set the Duration of the Slide to your desired 
> >delay.  Then simply follow the Slide with an ordinary SoundOut object 
> >for your audio. 
> > 
> >Hope that helps. 
> > 
> >----- 
> >David McFarlane 
> >E-Prime training 
> >online: 
> ><http://psychology.msu.edu/Workshops_Courses/eprime.aspx>
> http://psychology.msu.edu/Workshops_Courses/eprime.aspx 
> > 
> >Twitter:  @EPrimeMaster 
> >(<http://twitter.com/EPrimeMaster>twitter.com/EPrimeMaster) 
> > 
> > 
> >At 8/23/2012 12:48 PM Thursday, you wrote: 
> > >This must be straightforward but I can't see how to do it. 
> > > 
> > >E-prime v2 : I have a slide with video and audio sub objects on it 
> > >and I want the video to start immediatley (which it does by default) 
> > >but I want to delay the time at which the audio starts playing and I 
> > >can't see how to do this. 
> > > 
> > >Can anyone help? 
> > > 
> > >(the 'StartOffset' property does something different) 
> > > 
> > >Many thanks, 
> > > 
> > >John 
>
>

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