alpha in video

[EricCamper]

Questions for the video gurus..

I have a video clip I got off of Istockphoto... It is an animated curtain with alpha channel, but the alpha is the last 5 secs of the video and the first 5 secs is the curtain. How do I add the keying in Premiere so I can see through the video and have something behind it? Thanx

[instinct]

Cut the clip in the middle and re-arrange them and set one of the layers to be the alpha...am not a premiere user but should be possible i'd guess.

Regards,
Thorsten

[MoonDoggie]

you need to re make it in After effects, I'm not a big premiere guy either, but I do love AE.

Open Premier, and export each section of the video as different videos.

Import them into AE and set the alpha mask to the alpha animation.