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Projector compositing effect

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Tabitha MooreProjector compositing effect
by on Mar 9, 2010 at 10:48:59 pm

Hi,

I'm trying to re-create this footage of a film projector's beam with footage playing within it (timecode 00:07):







Is it done by masking out the edges of the footage and animating some beams of light behind it?

Any guidance or tips and tricks would be much appreciated.
Thanks in advance.

Tabitha


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Dave LaRondeRe: Projector compositing effect
by on Mar 9, 2010 at 10:55:07 pm

Practical effects galore today!!!!
  • Get a video projector
  • Get a smoke generator or some other method to create smoke
  • Get a DARK room
  • Spread the smoke, play some video and turn on the projector
  • Repeat until you have a collection of nice-looking shots

After all, how do you think they did it in the example you cite?

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


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Tabitha MooreRe: Projector compositing effect
by on Mar 9, 2010 at 11:26:29 pm

Hmm, thanks, but the thing is:

We shot the projector footage (so at least I have that to work with).
We weren't allowed to use a smoke machine in the projection room thus we have no intense beam of light to work with. Hence I'm trying to re-create this in After Effects, as I'm pretty sure the guys that did this Andrew Marr stuff did that effect in post too.


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Dave LaRondeRe: Projector compositing effect
by on Mar 9, 2010 at 11:29:24 pm

Well, who says you have to the same, identical lens as you used before? Can't you just shoot a beam of light through smoke in a dark room and composite it into what you have already?

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


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Steve RobertsRe: Projector compositing effect
by on Mar 10, 2010 at 12:50:55 am

There's always Trapcode's Shine plugin ...

(Steve ducks)



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Dave LaRondeRe: Projector compositing effect
by on Mar 10, 2010 at 5:07:13 pm

[Steve Roberts] "(Steve ducks)"

I guess it all depends on how realistic someone wants it to look. Yeah, yeah, I know I've said that before, but it's still valid.

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


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Darby EdelenRe: Projector compositing effect
by on Mar 11, 2010 at 12:45:11 am

[Steve Roberts] "There's always Trapcode's Shine plugin ...

(Steve ducks)"


I'm going to one up you Steve.

"There's always CC Radial Fast Blur!"

(Darby runs out of the room)

...

(Darby comes back unapologetically)

But seriously, if you composite a copy of the projector footage on top of itself, apply CC Radial Fast Blur, put the center at the center of the projector's lens and set this layer to the Screen blend mode I think you're half way to a passable effect.

You may need to apply a Levels effect before the CC Radial Fast Blur in order to crush the darks so that only the bright spot of the projector lens becomes 'volumetric.'

Darby Edelen


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Darby EdelenRe: Projector compositing effect
by on Mar 11, 2010 at 12:46:44 am

I'll also mention that once you have the 'beam' to your liking there's no need to use Masks to constrain the video footage you lay over it, since you can duplicate the beam footage and use it as a Luma Track Matte. I would set the video footage layer's blend mode to something like Multiply as well.

I love blend modes ;)

Darby Edelen


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Dave LaRondeRe: Projector compositing effect
by on Mar 10, 2010 at 6:27:34 pm

...and other than creating the beam with a practical effect, a lot of those edges were indeed created out of masked solids, masked footage and adding glows. Lord only knows how many layers were invold in some of those.

The BBC puts a lot of work into their effects.

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


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