adobe after effects animation preset duration

Question

I'm new to after effects. I want to apply some effect (for example flashing) to one of my images in composition. I want that effect to be applied from 5 to 10 second. How can I do this?

Answer 1

There are so many answers to this.. heres one:

I'll assume you want the image to flash for 5 seconds then to be unaffected from then on.

• Select your image in the Timeline
• Search for 'Strobe' in the Effects & Presets panel
• Drag the Strobe effect onto your image in the timeline
• Observe the Effect controls palette which pops up
• At time 0, set a keyframe on the Strobe property 'Blend with Original' with a value of 0%
• At 5 seconds, set another keyframe on this property, with a value of 100%
• (modify the strobe to taste)

If any of this is unclear, I'd suggest the excellent free tutorial series by Andrew Kramer at: http://www.videocopilot.net/basic/