Mark Coniglio
TroikaTronix
/ Moderator
Jun 12, 2007, 8:22 AM
Post #3 of 9
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Re: [pandigital] Black frame between scenes
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Usually this has to do with the ordering of the actors. Isadora executes the actors in a Scene from top to bottom. If the actors are exactly the same level vertically, then they are executed from left to right.
Consider the following setup:
The order in which these actors are executed is:
1) Projector
2) Dots
3) Movie Player (sends frame 1 of video to Dots)
at the time that the Projector actor is executed, it has no image. In other words, it will produce a black frame, because the Movie Player has not yet been executed. Thus, you get a black frame.
On the next cycle, Step 1 will produce an image because the Projector has the video frame from the previous cycle -- in other words you get to see frame 1 of the video. Then, on step 3, the Movie Player sends out frame 2 of the video, on the subsequent cycle, you see this frame, and so on.
This mechanism on how Isadora executes actors is not really documented well in the manual. But as users have become more sophisticated it has become more important.
FWIW, I'm planning to make a change in the way this works before 1.3 gets released. It will use a different model for how the video is "pulled" into the Projector, and ensure you don't get the black frame.
But for now, you need to consider the order of the actors, or use the quick Fade Time as suggested previously.
Best Wishes,
Mark
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Mark Coniglio / TroikaTronix
Creator of Isadora
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