Shane Benson
Forum Replies Created
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Hey! That worked! Thanks!
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Ok, then I guess ill have to do this in 2 parts.
The first part will have the black/white alpha, because I need that for the track matte.
The second part, ill have to replace the black with 50% gray, and use that for the displacement.
Or better yet, is there a way to add displacement to areas that only show by the track matte?
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That looks to be a CS4 feature. I forgot to mention im using CS3.
As of now, ive managed to get the footage layer back up in front of the camera and positioned it so its lined up, and parented it to the camera so that it moves when the camera does.
The problem now is that its not tracking right. The particles that this layer is emitting are not staying in place. Im sure this has something to do with the layer being too close to the camera and not positioned correctly in 3D space.
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Ok, I think im understanding it better now. It was the steps I was getting confused. At first, I was trying to use the D-map without any pre-composing.
Those motion trails also have to fade out and slowly scale up in size, so im fairly sure that will need to be done before the 50 layer are pre-composed, then they have be used as a D-map.
Thanks for the help.
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First of all, the video I posted above is not mine. Its just showing the effect that I want to recreate from my own footage. I should have made myself clear on that one. Sorry.
Here is my footage that im currently working with.
Kenny_roto_test from Shane Benson on Vimeo.You can see the roto’d frames ive made that come off of his body as he runs. What im trying to do is get those roto’d frames to act like silhouettes that displace the air as shown in the first video I posted.
The problem is that I think I need to change those roto’d frames into white mattes, then somehow find a way to outline them and then use them to displace. But the process of doing this is what im not familiar with.
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If i were to use any of the time effects, like echo, etc, would the trails be able to stay in place as the camera moves? My footage has quite a bit of camera movement, (panning and rotating) so the trails would have to stick, (hence why I tracked the shot and attached the roto’d trail frames to nulls)
nothing as of how has been precomped. The timeline has 50 roto’d trail layers, and then the original footage beneath it.
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Well, I was speaking about the shot where the camera would be placed at the edge of the crater looking slightly downward, then have the character climb up, and onto the table while having green screen on the table, and behind the character as well.
For a wide shot showing the character making his way up the slope, on the location, there will be a embankment that we can line with green screen and use because its part of a sloped dam for a large pond. That should give us the “slope” we need.
The shots themselves arent going to be anything too entirely difficult. The camera will be locked down on a tripod.
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Thats funny you mention it, because I had got the idea from that tutorial, but wanted to do more with it. Andrew’s tutorial was based on a character walking around the debris, but I wanted to do more, plus it would go along with the video ill be shooting.
Ive already made a small test animation that I tracked with a small version of a crater in some footage, and it turned out quite nice.
As far as the original question concerning how I should shoot it… I think what im going to do is set up a table (or something sturdy) covered with green screen and film the actor climbing up onto the table. Then use that for the crater shot.
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That sounds great, but we dont have a real crater to use. Im assuming we’ll have to find a hole, or make our own.
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Sorry about that. I should have given more details.
The crash shot will be back from a distance.. wide shot. The next few shots (character crawling out) will contain both wide and tight.
The wide will be from several distant angles (human eye perspective), and the close up tight shots that will be taken into account will range from near ground level, or human eye level right on top of the character as he stands up after making his way out of the crater.
The spaceship (or at least the remaining debris) will be visible inside the crater. There will be some fire, and smoke rising.
If I can recall, I think I have some cheap green screen type material that ive used before. I had forgotten about it.
I can see that someone answering this question is rather difficult because all the details are not right in front of you, and without having an understanding of the shot, its hard to say.