Mike Clasby
Forum Replies Created
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You can do it by applying an expression (wiggle) to mask the vertices. Three options below:
1) I just tried a new (to me) Script, “maskPointsExpression.jsx”. It works a charm. You can get it here:
https://www.nabscripts.com/Downloads/downloads_en_2.php?id=7
Demo on the page has little vid demo, I saw that after I typed the following walk-through, oh, well, details follow:
Add “maskPointsExpression.jsx” to your AE Scripts Folder, then fire up AE.
Run>Script>maskPointsExpression. Then select your mask,
Click on “Calculate” (it puts up a number equaling the vertices
Click on Custom (to apply expression to only one mask point) ,.
Click the Display Num radio button, so you can see which mask points to wiggle.
Type the number of the mask point you want to wiggle in the box below “Custom” and “All”.
Click “Position”, write your wiggle expression in the box:
wiggle(15,20) ;//use own your wiggle expression
Anyway, it creates a new mask, named “Animated mask” with the keyframes determined by the expression.
To get two mask points with a wiggle expression, select that new mask, “Animated Mask”, and do the above procedure, but for mask point 2, if that’s the other onw you want to wiggle. Now when you click OK, you get another new mask, also named Animated Mask, wit two points wiggling.
Pretty slick.
There may be a way to do separate wiggle expressions on two different verticies at the same time, but I can’t noodle that out in a quick test.
Be forewarned, trim footage to only as long as you needed, I had a 30 second clip in a 4 sec comp, yet it calculated the keyframes for all 30 sec, taking a long time (5 minutes plus). After trimming the clip, it knocked it right out.
2) There is an earlier script, written for Roto work, that attaches mask vertices to track point keyframes (and you can write expressions for the Track Points, then Convert to keyframes). It works but is a longer work around, an earlier post, here:
https://forums.creativecow.net/readpost/2/891545
It’s a great script for roto, but I think the first one is easier for putting expressions on a mask.
3) Also, crgreen has a script that should do what you want, but I haven’t really used it. It too would probably be a two-step process, like with the script above. The script is named “Connect_Vertex_to_Point.jsx” and is here:
https://www.crgreen.com/aescripts/ie/
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So you want the radio wave to reveal the image (doggie)?
If so, create a new solid layer above you doggie layer. Add Radio waves to the solid layer.
In the Doggie layer below, in the Modes Panel, set the Track Matte TrkMat) to Alpha (or Alpha Inverted if you want the spaces between waves to reveal).
Is that what you want?
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Add an adjustment layer.
Draw your mask for the man-on-bench, there on the adjustment layer.
Set the mask to subtract.
Add you blur effect to the adjustment layer.
Feather the mask as needed.
Adjust the mask with Mask Expansion (MM reveals all mask properties) to grow or shrink the area of the mask.
This Cow tut from Andrew might be of help too:
https://library.creativecow.net/articles/kramer_andrew/dof.php
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Here is a tut on how John Dickerson used AE to hit spots where video clips were located in a virtual gallery in AE’s 3D space:
https://admin.adobe.acrobat.com/_a510822738/p64055580/
There is a pause at 15 min or so when he temporarily lost a connection, so let it run. The beginning is the design of the spot, near the end is great stuff on camera movement.
Here is a download of the AE project file:
https://www.motionworks.com.au/z_other/downloads/camera%20setup%20example.sitx
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I think I would try setting up a series of rings in AE’s 3D space, then fly the camera through that. Dan has two ways, both would need adaptation, but with the right layer, the little diamonds in a ring of your sample (made in PhotoShop maybe), and maybe a four color gradient background, it might be what you want.
Here is the tut for a particle generator, sub in your layer for the ring layer in the comp named “Rings”, then adjust the parameters in the expression to get them to bunch close (or use bigger rings):
https://library.creativecow.net/articles/ebberts_dan/particle_gen.php
Also Dan has an expression solution for spreading layers out along a path, adjust the spacing to taste, get them moving then, precomp that and use time remapping on the precomp to freeze them in place once they are arranged like you want. Then fly the camera down the path. Again use your own custom ring layer. This may be easier to get the spread you want:
https://www.motionscript.com/mastering-expressions/follow-the-leader.html
These solutions are both a little round about, the second maybe a little easier, but both should work.
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Here you go:
Tracking obscured objects in video
https://studio.adobe.com/us/tips/tip.jsp?p=1&id=399&xml=aft6tracking
Also you can copy/paste tracks to a Null, changing the track points as they leave the screen, Andrew does it here:
https://library.creativecow.net/articles/kramer_andrew/Set_Extensions.php
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These might help. Can you track the TV set, and do a Perspective corner Pin Track?
Keep motion in perspective
https://studio.adobe.com/us/tips/tip.jsp?p=1&id=100241&xml=aft65cornerpin
Using the new Motion Tracker
https://studio.adobe.com/us/tips/tip.jsp?p=1&id=487&xml=aft6ttmotiontracker
Tracking obscured objects in video
https://studio.adobe.com/us/tips/tip.jsp?p=1&id=399&xml=aft6tracking
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In the Paragraph Palette (Window>Paragraph), you probably have the paragraphs Left Aligned, select the next one, Center Aligned.
I dunno why it does that, but it does.