Slideshow with Revolution?

[Sivakatirswami]

OK, Joao, Thomas, I could not resist... disclaimer... this is my  
first attempt to use callbacks in a player and I don't have a clue  
what I'm doing except to follow the docs as best one can...

I loaded a small test stack with 11 images and set a background group  
consisting of syncMusic fld, player (set to a .mp3 music  file ref)  
and button, way off to the right which will be out of the window rect  
in the end and did as you said and started the music and clicked the  
'record" button to go next card, recording the interval each time:

I got this in the fld:

21525
30222
36995
44598
52557
63045
72544
80195
88907
91849
96601

Not knowing how to implement your "poll the player's current time on  
a loop" suggestion --

(all my QT audio manager stacks poll on a second interval, so it's  
impossble to record exactly at a given second and polling with a send  
on 1/600 of a second (the timeScale for this player) seems CPU  
excessive, I may be missing something there as well, so...)

I tried to implement a callbacks model... and set the callbacks of  
the player like this:

on mouseUp
   put fld "syncMusic" into tIntervals
   repeat for each line x in tintervals
     put x &",goNext" & cr after tTransitionPoints
   end repeat
   delete line -1 of tTransitionPoints
   set the callbacks of player "music" to tTransitionPoints
end mouseUp

OK, now the player has this callbacks property:

21525,goNext
30222,goNext
36995,goNext
44598,goNext
52557,goNext
63045,goNext
72544,goNext
80195,goNext
88907,goNext
91849,goNext


and in  the player script I have.

on goNext
   go next card
end goNext

it doesn't work. I start the player and the "go next card" is not  
implemented when the intervals are reached... what am I missing?

Sivakatirswami

On Apr 14, 2006, at 9:15 AM, Thomas McGrath III wrote:

> Joao,
>
> This is actually not that difficult.
> 1.) Are you using a player?
> 2.) If so, is this one and only one soundtrack?
>
> If so then in 'record' mode what you need to do is have a  
> background object with a "Sync" field and a "Capture" button in it  
> aside from your next and prev buttons.
> Then in the script of the the capture button you can:
>
> on mouseUp
> put the currentTime of player "MySoundTrack"  & cr after field "Sync"
> go next card
> end mouseUp
>
> Then play your soundtrack and hit the button when you want to  
> capture the time and go to the next card.
>
> Then in playback mode you can store the field "Sync" in a custom  
> property of the stack and hide the background group for the SYNC  
> field and Capture button.
>
> So to put the field in the custom prop in the message box type:
>
> put field "Sync" into the slideSync of stack "MyStackNameHere"
>
> Then in the playyback script you will poll the current time of the  
> player in a loop and go next page when the
> current time reaches the recorded times in your custom prop.
>
> on currentTimeChanged theInterval
> if theInterval is in the slideSync of stack "MyStackNameHere" then
> go next card
> end if
> end currentTimeChanged
>
> You will have to deal with your auto start scripts and with the end  
> of playing etc. but this should get you started.
> HTHs
>
> Tom
>
>
>
> On Apr 14, 2006, at 1:30 PM, Joao Candido Portinari wrote:
>
>> Revolution friends and gurus,
>>
>> I would appreciate very much any help you could kindly provide on the
>> following:
>>
>>>> I am trying to build a slideshow using Revolution. It consists  
>>>> of some 200
>>>> images of paintings accompanied by a music soundtrack, lasting  
>>>> about 20
>>>> minutes (automatic play with dissolve transitions).
>>>>
>>>> The problem is the need for a practical way of creating an accurate
>>>> synchronization between the images and the music soundtrack  
>>>> (meaning that
>>>> each image must be shown at a specific time in the soundtrack).
>>>>
>>>> This sync creation process should be natural and easy enough,  
>>>> something like:
>>>>
>>>> 1. go to “authoring mode”;
>>>> 2. play the slideshow and click “go next card” when a specific  
>>>> musical event
>>>> is reached;
>>>> 3. repeat this process consecutively as the images go by, and  
>>>> commands for
>>>> “go next card” should be inserted automatically in the script.
>>
>> Do you know of any already existent stack that builds slideshows  
>> in this
>> way? If not, how do I write a script for this?
>>
>> Thank you very much for your help.
>>
>> Regards,
>>
>> Joao
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>
> Thomas J McGrath III
> 3mcgrath at adelphia.net
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