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Stock Footage: Gore FX Assistance please :)

Posted: Thu, 28th Jan 2010, 1:43am

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DylanSchnitker

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So i just bought the Gunfire FX pack and the Gore FX pack, gunfire works wonders because it was filmed on black BG, although the gore was filmed on a white so the background still shows up sad

I did my homework on past posts on here, so far the best solution i've gotten is to Grade it by inverting it, then Hue Shift 180 degrees. This does cancel out the background, although it leaves the blood looking a little discolored, splotchy, grainy, and just not convincing sad

Any other ideas? Thanks!
Posted: Thu, 28th Jan 2010, 2:42am

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Garrison

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EffectsLab is not designed for compositing results that you are looking for.

CompositeLab is the way to go with removing a white background.
Posted: Thu, 28th Jan 2010, 2:53am

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pixelboy

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Unfortunately, EffectsLab isn't really built for that sort of compositing - the typical method of dealing with footage filmed on white is to change the blend mode to "Multiply", or to key out the white. CompositeLab or VisionLab would be able to handle this. Some stock footage is "pre-keyed", meaning it already has an transparency channel - EffectsLab should be able to composite that just fine.
Posted: Thu, 28th Jan 2010, 3:24am

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DylanSchnitker

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Thanks for replying, but aw that disappointing to hear sad

So is there not a different program I could use to key out the white, or do what was done to the other stock footage that was already made transparent? I'd hate to spend another $150 for the sole reason for keying out this white sad

Thanks!
Posted: Thu, 28th Jan 2010, 3:42am

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Garrison

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DylanSchnitker wrote:

I'd hate to spend another $150 for the sole reason for keying out this white sad
Actually, there is more then just that reason to pick up Composite Lab.

Once you place the effects on your project, you are going to want to color grade it so it will blend the stock footage/muzzle flash/saber etc. and make it look better.

Without it, your effects won't look as well.
Posted: Thu, 28th Jan 2010, 9:29am

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Simon K Jones

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What editing software do you use? That might have the ability to process this as well.
Posted: Thu, 28th Jan 2010, 5:15pm

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spydurhank

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Rating: +2

You don't want to spend more money so I can't suggest that you buy Compositelab or Visionlab which is the best way to go so try this.

Render your stock footage as an image stream in Compositelab.
Open those images up in "Gimp"
Click on layer.
Click on transparancy.
Click color to alpha. This option will be set to white by default so don't change the settings.

And that's it, this will turn the color white transparent and it only takes a few moments. Then just name and save your file to whatever format you like and make sure you create a folder for those new images.

In Compositelab... click on open, choose image stream, find your folder with your new transparant images and click on it. You should be good to go.

p.s.

I hope you have Gimp. It's a free photo editing program.
Posted: Thu, 28th Jan 2010, 8:25pm

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rogolo

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Spydurhank: The Official Gimp Spokesman of FXhome


Good suggestion, BTW. smile
Posted: Thu, 28th Jan 2010, 8:41pm

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spydurhank

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That's Vulcan funny dude. Very cool. biggrin
It shouldn't take too long since most blood spurts only last a few frames.
Posted: Fri, 29th Jan 2010, 3:40am

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DylanSchnitker

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@Spydurhank: Wow thanks very much, I'll download Gimp, and when you were saying render it as an image stream in CompositeLab did you mean EffectsLab?

Because this guys only got EffectsLab smile

@Tarn I am most comfortable with Pinnicle, and use that often,
although i also have Sony Vegas.
Posted: Tue, 23rd Feb 2010, 12:37am

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FXhomer61121

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I just got composite lab along with gore footage from FxHome. so how do i key out the white from the footage?
Posted: Tue, 23rd Feb 2010, 7:04am

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spydurhank

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DylanSchnitker wrote:

@Spydurhank: Wow thanks very much, I'll download Gimp, and when you were saying render it as an image stream in CompositeLab did you mean EffectsLab?

Because this guys only got EffectsLab smile

@Tarn I am most comfortable with Pinnicle, and use that often,
although i also have Sony Vegas.
Oh wow, hey sorry for the late reply... I just now saw this... don't know how I missed it but yes you're correct. If I'm not mistaken you should be able to do the same thing in Effects/Composite/Visionalab. I could be wrong though since I've never used anything other than Visionlab.