Suggestions for iris-like effect? at DVinfo.net

Go Back   DV Info Net > Cross-Platform Post Production Solutions > Adobe Creative Suite

Adobe Creative Suite
All about the world of Adobe Premiere and its associated plug-ins.


Reply
 
Thread Tools Search this Thread
Old April 4th, 2007, 08:19 PM   #1
Major Player
 
Join Date: Jun 2006
Location: Toronto
Posts: 539
Suggestions for iris-like effect?

I shot a short film recently and I made quite a few amateurish mistakes I'm trying my best to fix in post.

In one scene, there's something in the frame that I really want to try to hide. It runs from near the top-left of the frame down to the bottom left of the frame. The action I need to save is pretty much dead center...so I'm thinking about adding an iris-like effect where a circle of black would surround the image and rounding it off (silent-era film style).

What's the best way to do this in Premiere? Perhaps putting a black matte behind it and using opacity keyframes? Which video effect would you use?

I hope I'm being clear in what I'm trying to do because I'd love some advice from the experts here.
Craig Irving is offline   Reply With Quote
Old April 5th, 2007, 03:46 PM   #2
Regular Crew
 
Join Date: Dec 2005
Location: Chicago, IL
Posts: 140
an expert...

...I'm not. Here ends your disclaimer.

Sounds like you want an 8-point garbage matte (a 'keying' effect) in the simplest case. A step-up would be creating a mask with a paint program.

I'd say you're right about keyframing the opacity, and I'd have to think about how best to feather the edges of your mask(s). I've been very happy using the more advanced masks in aftereffects, if you have that at your disposal.

edited to add:
I just tried this in Premiere 2.0, ymmv. ;-p
Insert->New->ColorMatte (choose the color, etc)
add into the timeline, and apply these effects to the 'effects control' of the matte:
Effects->Keying->8ptGrbgeMatte, adjust the control pts to shape the boundary
(this will appear to cover your action, and leave the 'artifact' uncovered, then you invert it in the next step)
Effects->Channel->Invert, set it to invert the alpha channel only
Effects->Blur&Sharpen->RadialBlur, not gaussian because that effects the frame edge as well as the 'iris' shape.

Last edited by Andrew J Morin; April 5th, 2007 at 04:29 PM.
Andrew J Morin is offline   Reply With Quote
Old April 5th, 2007, 04:30 PM   #3
Major Player
 
Join Date: Jun 2006
Location: Toronto
Posts: 539
Looks like I wasn't wrong about the experts here at all.

Thanks for those very useful tips/steps! I will try it as soon as I get home.


I really appreciate your help!
Craig Irving is offline   Reply With Quote
Old April 5th, 2007, 04:36 PM   #4
Regular Crew
 
Join Date: Dec 2005
Location: Chicago, IL
Posts: 140
np

yw

here's a screen cap, just because I wanted to try an attachment...
Attached Thumbnails
Suggestions for iris-like effect?-mirror-w-iris.jpg  
Andrew J Morin is offline   Reply With Quote
Old April 5th, 2007, 04:56 PM   #5
Major Player
 
Join Date: Jun 2006
Location: Toronto
Posts: 539
Wow. Even better. Thanks :)

You've just done all my work for me... heh
Craig Irving is offline   Reply
Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

Professional Video
(800) 833-4801
Portland, OR

B&H Photo Video
(866) 521-7381
New York, NY

Z.G.C.
(973) 335-4460
Mountain Lakes, NJ

Abel Cine Tech
(888) 700-4416
N.Y. NY & L.A. CA

Precision Camera
(800) 677-1023
Austin, TX

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > Cross-Platform Post Production Solutions > Adobe Creative Suite

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 07:26 AM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2017 The Digital Video Information Network