Of course if in your case the right track is video 1 and you want video 2 to appear in the blue area, then apply the blue screen effect to video 2.
However I am not clear about the transition. Maybe it would be better to do it all in AE, or you may need to keyframe a garbage matte on track 2 as well so it does not keep overlaying track 1.
there is no blue color on the video so it is not able to key anything on that video clip. If I apply on the transition they it keys out the blue clip but it just reveals the layer underneath which is already seen through the alpha area....
can you tell me which order should i be placing the videos in the different layers.... at the moment i have
Video 3: Transition
Video 2: Video 2
Video 1: Video 1
OK, there is no blue color. What in your picture was blue is in fact an alpha channel, correct?
The green/yellow band in your movie makes a wipe-like movement, let's say starting in the upper left hand corner and moving all the way across to the bottom right hand corner. It starts with video 2 visible, because it overlays video 1, then the bands move to the position in your picture and you want video 1 showing in the part where blue was. Correct?
If I understand this correctly, you need to use a garbage matte on video 2 to limit the size of video to to the right part, under the green/yellow band and keyframe that to the speed of your movie. With each frame in your track 3 movie you have to adjust the keyframed garbage matte to follow the border between the green and yellow band.
The difficulty is that this is not a transition, but an effect, so it is a bit of work.
ok great... I can use this to create an effect and then use the same effect wherever I use the transition. Because the timing of the transition will remain the same so it will work perfectly.
If you have made the garbage matte in video 2 once, you can copy and paste attributes to another clip in the timeline and in that way repeat the effect without any trouble. To make it easy on yourself, make a razor cut in track 2 at the start of the movie in track 3 and another razor cut and the end of the movie. In that way you can copy and paste attributes easy in other location in the time line without having to set the first keyframe on longer clips.
One other thing, if you make the keyframed garbage matte on track 3, copy and paste attributes to the clip on track 2 and then delete the garbage matte on track 3, that is optically a lot easier to accomplish correctly and may speed things up a bit.
yeah did just that... works well... thanks