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reflections and shadows for greenscreen videos

Posted: Wed, 17th Dec 2008, 10:02pm

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Firebird5762

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Ok, I've worked on vision lab for a little while now and can't seem to get anywhere on creating shadows and reflections for greenscreen subjects.

example: look at the "virtual set" and the news cast in the vision lab intro page. You'll see that in both videos she casts a reflection or shadow in the greenscreen examples. How can I do that?
Posted: Wed, 17th Dec 2008, 10:21pm

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Axeman

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You duplicate the footage of your actor, flip it vertically, reposition it to align with the original footage, then use the Animation and Grading controls to alter the color and angle, based on the lighting, the reflectivity of the surface, and whether it is a shadow or a reflection that you are trying to create.
Posted: Thu, 18th Dec 2008, 1:30am

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GBP4563

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that sounds time consuming!! Is there any preset thing in vision lab, when they can do it all for you?
Posted: Thu, 18th Dec 2008, 1:50am

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Axeman

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It is a bit time consuming. Visual Effects are, and always will be, time consuming. If you don't want to spend a lot of time on compositing and visual effects, then you need to either learn to be satisfied with results that look like crap, or find a new hobby.
Posted: Thu, 18th Dec 2008, 3:24am

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spydurhank

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You should never try to hurry a project as in "cutting corners" since anything hurried will almost always look like the stuff that comes out of your, you know what. eek yes some effects take some time but the "great finished product" that you worked long and hard on is what you'll be proud to show people.
the shadows and reflection bit doesn't take very long once you get the hang of it or depending how complex your shot is.
it takes about 20 seconds to copy and paste your footage then re align it.
the rest is just adding some blur and darkening it to look like a shadow.
you don't have to do a whole lot to make it look like a reflection.
that's maybe a minute of work at the most. the rest is just rendering.
so take you time and do a great job that you'll be happy with, not one that no one will care to view. biggrin

and have a good time with it first of all.
Posted: Thu, 18th Dec 2008, 9:58am

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Simon K Jones

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As Axeman says, visual effects require time, effort and patience. There's no getting around that. If you don't have those three, then you can always look into hiring a visual effects team to do stuff for you.

As always, it comes down to the three factors:

Cheap
Fast
High quality

You can only ever have two of those three elements, though.
Posted: Thu, 18th Dec 2008, 12:53pm

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badmonk

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GBP4563 wrote:

that sounds time consuming!! Is there any preset thing in vision lab, when they can do it all for you?
yup like hank, axeman and tarn just said, VFX IS time consuming! there is no way round this as even with hollywood VFX software, the actual software does not know what you want it to do, so you have to take it by its hand every frame of the way smile
but like the guys also said, time & patience will pay off!
i worked on a 5 sec scene the other day and it took around 3 days in total!! lol!! i actually really enjoy it as i find it kinda relaxing!
Posted: Thu, 18th Dec 2008, 7:03pm

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spydurhank

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hey monk I wanna see that 5 second clip. I bet it rocks. 3 days of work, I know it's gonna look fan-freaking-tastic. biggrin
Posted: Tue, 23rd Dec 2008, 10:56am

Post 9 of 13

badmonk

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spydurhank wrote:

hey monk I wanna see that 5 second clip. I bet it rocks. 3 days of work, I know it's gonna look fan-freaking-tastic. biggrin
sorry Hank, i have been doing loads of test shots and then when i am happy i have been deleting them to free up HDD space! should keep em really to look back on as reference!
got an external HDD hooked up now so i can dump my footage on there smile
Posted: Tue, 23rd Dec 2008, 4:29pm

Post 10 of 13

Axeman

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When you finish, you should do a final render to a decent high-compression codec, like h.264, so you can have the final version to watch later if you want, without taking any harddrive space. A clip that short shouldn't end up more than a couple MB at most. Then you can delete all of the raw footage and project files that you used, to save space, and we could still see the results. smile
Posted: Tue, 23rd Dec 2008, 5:37pm

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FXhomer88905

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Hah,

Two weeks after I bought Fxhome I went to Best Buys and picked up a 640 gig external drive for $99. Storage problems solved ...
Posted: Tue, 23rd Dec 2008, 6:19pm

Post 12 of 13

spydurhank

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badmonk wrote:

spydurhank wrote:

hey monk I wanna see that 5 second clip. I bet it rocks. 3 days of work, I know it's gonna look fan-freaking-tastic. biggrin
sorry Hank, i have been doing loads of test shots and then when i am happy i have been deleting them to free up HDD space! should keep em really to look back on as reference!
got an external HDD hooked up now so i can dump my footage on there smile
dude I do the same thing. only recently did I actually start saving my stuff. I never bothered to save it cause I saw it as practice. biggrin
Posted: Tue, 23rd Dec 2008, 6:24pm

Post 13 of 13

spydurhank

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FXhomer88905 wrote:

Hah,

Two weeks after I bought Fxhome I went to Best Buys and picked up a 640 gig external drive for $99. Storage problems solved ...
yeah dude, Memory is getting cheaper by the day.
I got an e-mail from comp usa. a terabyte and a half external drive for $130.00.
I about choked on my spit when I saw that. biggrin
I'm gonna see if prices keep dropping and if they do I'm gonna go for it! biggrin