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How can I make this effect in After Effects -VIDEO INCLUDED
I came across a tutorial to make multiple 3d screen in after effects. Problem is, it is japanese and their translation is very poor. They leave out many steps and I can’t figure it out. The tutorial is located at https://www.ayatoweb.com/ae_tips_e/ae31_e.html
I have created my photoshop multiple screen image, however I don’t understand what they mean by it must have an alpha channel. Can anyone explain?
I also don’t understand what they are trying to do by adding the white solid. I looked at their timeline screenshot and do not see what they are doing with all the multiple layers.
I can get the still image screens, to disappear showing the under video. However I can not get the video to stay within the rounded corner screen format that the still were in. In my video the stills randomly disappear showing the entire under video. I imagine this may have to do with the photoshop alpha channel for the stills that I dont understand. Or also what they are doing with the 3 still image layers, that I don’t understand. Seems like they have only the bottom still image layer visible while the other two aren’t. What are they doing with the other two? Anyone understand this?
Does anyone understand this that can explain it to me? Or is there another english tutorial that better explains this? I appreciate it.
Tom
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5 Replies
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An alpha channel is a video term that means roughly the same thing as transparency in PS. It is the information that allows an image to be ‘cookie cut’ as a fg image over a bg image. Having just looked at the link, it’s hard to say why there would be a need for the white layer, though the layer above it is being used as an alpha channel [notice the black square with the white circle]. What the example does not show you are the track/transfer modes [the toggle opposite of the raster/anti alias/motion blur view shown in the screen shot.]. So the white layer is being ‘cut’ according to the tranparency [presumably] of the layer above it. So assume that you have to set your layer with a track mode “alpha”.
If I understand correctly, the tutorial is trying to say the following:
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Thanks, I got further than before and have everything exactly as needed up to step 2. I didn’t use any track methods though, so I don’t know if that will be a problem later on. Here are the problesm I am having…
1) I can not get the card wipe to cut the still images where they should, so each block is seperate. Instead it seems to cut up the image randomly, not at all anywhere near the borders. Is there someway to control where it cuts them and make it cut the image so each image frame is seperate? I do not see how they did this in the tutorial.
2) How to I get the card wipe to smoothly transition back to normal (ie. full card wipe transition back to no card wipe).
Those are the two main problems I am facing, especially the first one.
Thanks!
Tom -
Also, by watching the tutorial video, they split up their still image blocks to preserve the rounded corners! How did they do that? Seems card wipe splits in straight lines. Did they just leave the area around the rounded image block borders transparent so you can’t tell the difference how it split it?
If so, then I did something wrong. Because in my original photoshop image, the background is black not transparent. The only transparent areas are within the rounded borders. If I import the photoshop image, so that the background and inside the borders is both transparent. How would I be able to keep the video clip (2nd video, that is being transitioned to) within the borders and not inbetween the outside of the borders, since both would be transparent. Only way I could do this before is by NOT having a transparent background and thus the black covering up the video. Anyone know?
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John Fischer created a much more in-depth version of a combination of tutorials done by http://www.ayatoweb.com in response to several inquiries in the AE forum at Creativecow. This is a fairly time-intensive tutorial, but the end results are worth it! When you’re done you should know much more about track mattes, and some basic 3D camera moves. Hopefully, it will also give you some new ideas to play around with. Enjoy!
https://www.creativecow.net/articles/fischer_john/video_wall/index.html
Kathlyn Lindeboom
The Mistress of Mmmooooo! -
Wow, great link! I actually got my 3d wall to work very well, however it doesn’t look as good as his!
Tom
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