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Combustion 4 masking rotoscope
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  • Total Posts: 4
  • Joined: 2009-11-03 20:17:04

Hi - It’s been awhile since I have fired up Combustion 4 - Mac. I am looking for a solution for something I was told to try in Photoshop and it looked awful. I have a 6 second small QuickTime movie featuring a cow in the front moving from right to left. The deliverable is an FLV with alpha. They need the solo cow with alpha so it can be keyed in Flash.

I imported the footage, went to Operators - Mask - Draw Mask and used the Bezier Mask tool with Animate on. I advance each frame and was tweaking the mask to feature my solo cow. When I open it up now, I can’t seem to find the bezier points to continue.

This may be a 3 part question:
1: - Is using a mask like this a good solution?
2: - How do I get those bezier points to display again?
3: If I successfully mask the image and render the file, how do I export this allowing me to create an FLV with Alpha?

Any suggestions or alternate approaches are greatly appreciated. Please keep them simple, as I am pretty new to this fairly old version of Combustion.

Thanks in advance.

- shorescores



Replies: 0
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  • Total Posts: 4
  • Joined: 2009-11-03 20:17:04

Anybody?

I know it’s been less than 24 hours, but my back is to the wall with my client waiting.

Fingers crossed somebody will come through!

Thanks.

- shorescores



Replies: 1
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some answers to your question:

1: no. read here: http://www.vfxtalk.com/forum/iv-rotoscope-techniques-t19386.html
2: hard to say, but i guess you need to focus the viewport on the mask op. in case select the mask. also, if you want to move the vertex points, make sure you are in vertex point mode (see help).
3: frankly, never tried to export an flv out of c*. my advice would be to use google which app would be suitable for you.

good luck.
rayk

Author: hemmerli

Replied: 05 November 2009 05:32 AM  
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  • Joined: 2009-11-03 20:17:04

Thanks for the reply. I read the article and it seems like the author is using masking techniques to remove unwanted objects. I thought I was doing the same thing? If not, can you please tell me specifically what technique and tools I should use in Combustion?

Thanks.

- shorescores



Replies: 1
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yes, you use a mask op. my “no” was ment in regard to your technique “...I advance each frame and was tweaking the mask to feature my solo cow...” if you do this, i garantee you, the result will be disappointing if the object (your cow) is moveing alot.
in a nut shell:
-rule of thumb: use as few mask points and as few animations keys as possible.
-if the object is moveing, don’t try to roto the object as one object. break it down in pieces (legs, body, head ...)
-break the animation down into meaningful pieces. set key points at the extreme points of movement, first. then refine, if necessary.

a more elaborated explanation is in the link, i provided above.

cheers,
rayk

Author: hemmerli

Replied: 05 November 2009 03:21 PM  
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  • trinitifx
  • Posted: 06 November 2009 12:59 AM
  • Total Posts: 66
  • Joined: 2006-08-22 18:15:18

I agree with Rayk, however-

The flash exporter is part of the Paint operator.. I’m not sure you can use it to export masked footage.. I think it is just for vector..

You’ll have to render to some format and convert to flash w/ alpha..

-Matthew



Replies: 0
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  • Total Posts: 4
  • Joined: 2009-11-03 20:17:04

Rayk & Matthew - Thanks so much for the feedback. I appreciate it!

- shorescores



Replies: 0




   
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