Long motion trails in AE at DVinfo.net

Go Back   DV Info Net > Cross-Platform Post Production Solutions > Digital Compositing and Effects

Digital Compositing and Effects
After Effects, Shake and everything else.


Reply
 
Thread Tools Search this Thread
Old August 25th, 2012, 12:16 PM   #1
Major Player
 
Join Date: Mar 2005
Location: Lafayette, LA
Posts: 268
Long motion trails in AE

I'm moving through a still photo that I cut up in photoshop and I wanted to add motion trails as I move through it quickly but I'm having a real hard time understanding how I should go about doing it.

None of the motion blur techniques I've tried have done much.. just VERY subtle things.

What is the proper way to handle this?

Attached is a very crude example of what I'm talking about.

The boy in the front is cut out on his own layer (as is the 2nd boy). As I push through to the 2nd image, I want the boy in front to have trails reaching out as far back as the 2nd boy probably.

You can see "some" blurring has occurred but not nearly enough. I'm moving through that shot in less than a second if I remember correctly.

Any ideas?
Attached Thumbnails
Long motion trails in AE-example1.jpg   Long motion trails in AE-example2.jpg  

Kevin Richard is offline   Reply With Quote
Old August 25th, 2012, 03:16 PM   #2
Major Player
 
Join Date: Mar 2005
Location: Lafayette, LA
Posts: 268
Re: Long motion trails in AE

Ok, so I know why things like "Time/Echo" aren't working.

It's because I'm not moving the object around I'm moving the camera around.

So is there anyway to achieve this effect while just moving the camera around?
Kevin Richard is offline   Reply With Quote
Old August 25th, 2012, 04:03 PM   #3
Major Player
 
Join Date: Jun 2007
Location: Hamilton Ontario
Posts: 769
Re: Long motion trails in AE

I can't help you with the filter you need (you'll have to hunt around)...
But as far as motion blur is concerned. I believe that's reserved for graphics that are imported.

Not for pre rendered footage imported into AE...

Good luck...
Peter Manojlovic is offline   Reply With Quote
Old August 25th, 2012, 05:06 PM   #4
Major Player
 
Join Date: Mar 2005
Location: Lafayette, LA
Posts: 268
Re: Long motion trails in AE

Quote:
Originally Posted by Peter Manojlovic View Post
I can't help you with the filter you need (you'll have to hunt around)...
But as far as motion blur is concerned. I believe that's reserved for graphics that are imported.

Not for pre rendered footage imported into AE...

Good luck...
Well, it's not really footage that is being imported.

It's a composition from a PSD file.

3 layers, 1st boy, 2nd boy and background. They are cut out and the background "replaced" (rubber stamp style). I then set up a virtual camera in AE to move through the scene that I created by spacing the objects around. Push the background backwards and increase the size to compensate, pull the 1st boy forward and shrink him down to compensate. In the end if you orbit around 90 degrees you would see 3 slices like this | | |

But for the most part AE doesn't see movement so it doesn't treat it like it's moving. The camera is doing the moving in AE.
Kevin Richard is offline   Reply With Quote
Old August 26th, 2012, 05:34 PM   #5
Regular Crew
 
Join Date: Jun 2009
Location: Brisbane Australia
Posts: 114
Re: Long motion trails in AE

Hi Kevin. Have a look at Effects/Generate/CC Light Burst. Keyframe the ray length and you should be able to get what you are wanting. You might want to add it to a 2nd instance of your boy layers if they get washed out too much.
Gregory Gesch is offline   Reply With Quote
Old August 26th, 2012, 06:47 PM   #6
Major Player
 
Join Date: Mar 2005
Location: Lafayette, LA
Posts: 268
Re: Long motion trails in AE

Quote:
Originally Posted by Gregory Gesch View Post
Hi Kevin. Have a look at Effects/Generate/CC Light Burst. Keyframe the ray length and you should be able to get what you are wanting. You might want to add it to a 2nd instance of your boy layers if they get washed out too much.
Excellent!

That is a good bit more work but it is a great solution. I did need to duplicate the layer but it looks pretty good for the quick dirty effect that I need it for.

Just figuring out the right angles and following the movement takes a little bit more thought and playing around.
Kevin Richard is offline   Reply With Quote
Old August 27th, 2012, 02:41 AM   #7
Major Player
 
Join Date: Dec 2007
Location: London, UK
Posts: 277
Re: Long motion trails in AE

I would also try the "Blur & Sharpen -> Directional Blur" filter. You would still need to keyframe it manually, but perhaps it's more suitable. In fact, if you like you could try both the Directional Blur and the CC Light Burst together.
Jon Shohet is offline   Reply With Quote
Old September 16th, 2012, 02:48 AM   #8
Major Player
 
Join Date: Jan 2008
Location: Perth, Australia
Posts: 240
Re: Long motion trails in AE

I'm a bit late, so we'll see if it matters, but what was the shutter angle being used in the original move at the top?
Murray Christian is offline   Reply With Quote
Old September 16th, 2012, 04:01 PM   #9
Major Player
 
Join Date: Mar 2005
Location: Lafayette, LA
Posts: 268
Re: Long motion trails in AE

I'd have to dig up the camera and look... but they are stills from a DVX100a

I'm gonna say "standard" though I know that isn't really a number... but we weren't going for any sort of effect or look so it was in my typical shoot mode.
Kevin Richard is offline   Reply With Quote
Old September 16th, 2012, 05:22 PM   #10
Major Player
 
Join Date: Jan 2008
Location: Perth, Australia
Posts: 240
Re: Long motion trails in AE

Sorry, I meant for the After Effects comp not the actual footage. (I can't recall how streaky that can get off hand anyway. Probably not greatly)
Murray Christian is offline   Reply With Quote
Old September 16th, 2012, 06:57 PM   #11
Major Player
 
Join Date: Mar 2005
Location: Lafayette, LA
Posts: 268
Re: Long motion trails in AE

Ah, that was the first step I took in trying to get the effect. Almost no effect.
Kevin Richard 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 > Digital Compositing and Effects

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 12:40 AM.


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