This is an effect you can accomplish in a bunch of different ways, but basically you are going to want to isolate the rose. Your approach is going to depend on your footage.
One way would be to duplicate your footage, mask the rose, apply color effects to get turn it black and just fade up the masked layer. You could try use the Change Color or Change to Color Effects—though I sometimes find I need multiple instance to get this to work effectively.
I did a quick sample project and got good results using a Shift Channel Effect, and getting my red information from the green channel. Then just fading that layer up over my regular footage.
Then I did another try where I used “Set Matte” effect, used the green channel as an inverted alpha, and set that as a track matte of a lower layer that I tweaked to be a very black rose.
Here’s my quick examples, hopefully one will get you started down the right path: 7399_rosefolder.zip
Johnny Cuevas, Editor
Thinkck.com
“I have not failed 700 times. I have succeeded in proving that those 700 ways will not work. When I have eliminated the ways that will not work, I will find the way that will work.”
—THOMAS EDISON on inventing the light bulb.