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Question About 3D Superimposing...

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(@xanarchistx)
Posts: 3
Active Member
Topic starter
 

Hey everyone. Now, I have been wondering this for a while now. How do the professionals add 3D in movies? What I mean by this is, how do they add 3D in the background AND foreground of movie clips?

I starting thinking about how they did it when I saw the recent War of the Worlds movie, when in the beginning the robots rise from the ground, and then you see them in the background. How do they do that? Giant blue/green screens?

I mean, im not completely clueless about how to do it. I have created videos on blue screens, and superimposed 3D animation into it, but I wonder how they do it, and IF they do it without screens, outside in large environments.

Also, in an earlier post that I have seen (regarding 3D on Doc Ock in Spiderman 2), how did they add the tentacles BEHIND Doc Ock? Was he standing in front of a blue/green screen, or did the pros just matte around him?

Any suggestions would be helpful!

 
Posted : 07/08/2006 1:15 am
(@markg)
Posts: 1214
Noble Member
 

Depends. Much of the time they'll just put a matte around the actor... it's not hard, just time-consuming as the matte needs to be adjusted for each frame.

 
Posted : 07/08/2006 1:39 am
(@director958)
Posts: 211
Reputable Member
 

3d animations are rendered...

Let me use an example.

In Spielberg's "War of the Worlds. You see giant tripods in the background of real people right? Well, (this isn't probably how they did it) A tripod would be rendered then animated. But with no background. So the animation, is just a tripod rising. The animation is then rendered into a file format with a Alpha Channel Background (That means there is no background. The animation of the tripod is then imported into, lets say After Effects. In After Effect, there is a clip of people standing, but there is no tripod behind them. The animation of the tripod's layer is put on top of the "People standing with no tripod behind the layer" and then it looks like a tripod is with the people! Then a mask is applied on the people so it looks like the Tripod is behind the people instead of over them.

That is how 3d integration works. Well, its the way I do it. I would be happy to create a video tutorial for you upon your request. But you will require Adobe After Effects 7 and Autodesk 3DS MAX 8.

Sorry if my post was so long and confusing, but I like to get my point across.

Film is a story told with moving pictures...

___________________________
www.fallbackprod.co.nr
Matthew Wesley Miller

 
Posted : 09/08/2006 9:41 pm
(@xanarchistx)
Posts: 3
Active Member
Topic starter
 

Director958 - I get what you are saying, I am just not familiar with using masks. If you could make a video tutorial, that would be absolutely fantastic! I have Adobe After Effects and 3DSMax 7 (which should be sufficient), as well as Adobe Premiere Pro.

Thanks for the help!

 
Posted : 09/08/2006 10:34 pm
(@director958)
Posts: 211
Reputable Member
 

I'll get right on the video tutorial. Just tell me your e-mail adress so I can send it to you when I am done.

Film is a story told with moving pictures...

___________________________
www.fallbackprod.co.nr
Matthew Wesley Miller

 
Posted : 10/08/2006 12:43 am
(@director958)
Posts: 211
Reputable Member
 

I have finsihed the video Tutorial. Tell me your e-mail adress, and I'll send it to you.

Film is a story told with moving pictures...

___________________________
www.fallbackprod.co.nr
Matthew Wesley Miller

 
Posted : 10/08/2006 1:43 am
(@xanarchistx)
Posts: 3
Active Member
Topic starter
 

My email is mailto: forgetiii?yahoo.com.

Thanks!

 
Posted : 10/08/2006 1:27 pm
(@rjschwarz)
Posts: 1814
Noble Member
 

You lost me at the last mask. Could you send me the tutorial as well?
rob_schwarz?excite.com

RJSchwarz
San Diego, CA

RJSchwarz

 
Posted : 10/08/2006 4:21 pm
(@director958)
Posts: 211
Reputable Member
 

I have sent the video tutorial to both of you.

============================================================================
When the script writing is done, the work has just begun. When the filming is done, the work has just begun. When post-production is done, the work has just begun. When the distribution is done, you decide if the work is done.

___________________________
www.fallbackprod.co.nr
Matthew Wesley Miller

 
Posted : 14/08/2006 9:04 pm
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