I have three layers.
The bottom layer has just a tga file as a BG. No emitters.
Next layer has a tga series (with an alpha channel) from a 3d application as a BG. No emitters.
The top layer has no BG and one emitter.
During the animation the particles in the top layer fill the screen then fade away.
As the particles are dissapearing I would like to hide the middle layer and have only the bottom layer visible.
I cannot find away to turn off the middle layer at a perscribed point in time during the animation.
In the background image options, you have to change the number in the Hold Last Frame box to adjust how long the sequence/image stays visible. You can also edit how much of the sequence gets used in the Sequence/AVI boxes.