Stabilizing to remove an element then reintroducing the camera movement

[Mark]

Precomp the final composition without the dog, then use the wiggle expression on your position. Search around this forum for camera shake.

Regards

Mark

[David Dubois]

Hi Mark

I need to re-introduce the exact camera movement that I removed in the firstplace.
I thought Wiggle just introduced…well… wiggle ie. a random series of movements.

I’ll do a search now but just to clarify.:
I need the same shot as I started with, with the same movement as I started with… just without the dog.

if you goto http://www.dubious.tv and click on ‘uplinks’ this is the clip I need to clean up.

Thanks again

Dave

G5 2.5 Dual
2.5 gig ram
x800 xt
1TB media storage
23″ Cinema display
19″ IBM LCD – used for Cinema Display
FCP Studio (FCP 5.1.2)
After Effects 7
Shake 4

Currently working on ‘Lookin’ For Lucky’
Feature Film for Albino Injun Productions.
http://www.lookinforlucky.co.uk

[Mark]

Oh, I see…sorry, didn’t know that you wanted the same movement…Not really sure how to do this…

Mark

[David Dubois]

No worries!

It’d help if i’d explained myself properly 🙂

Anyone else have any ideas? Can I track the original footage then apply that data to th eposition of the new, cleaned plate…which I’ve pre-comped… hang on that might work. Back in a sec to let you know if it does.

I love sparks of inspiration!

Dave

G5 2.5 Dual
2.5 gig ram
x800 xt
1TB media storage
23″ Cinema display
19″ IBM LCD – used for Cinema Display
FCP Studio (FCP 5.1.2)
After Effects 7
Shake 4

Currently working on ‘Lookin’ For Lucky’
Feature Film for Albino Injun Productions.
http://www.lookinforlucky.co.uk

[David Dubois]

Right, so after my moment of inspiration I’ve done it.

It’s a very dirty technique and there MUST be a simpler way of doing this but here’s how I did it:

1) Stabilise the shot and clean up the plate. – ‘Clean Plate Comp’

2) Create a red solid at the same size as your source footage and parent it to the stabilised footage (thus using it’s movement from the stabilisation). Position this solid above your footage.

3) Duplicate the red solid and change the top red solid to a white solid (layer options)

4) Using the mask tool, create two very small and thin crosses in diagonally opposite corners. Make sure that the centre point is about 10 pixels away from the corner.

5) Increase the size of the ‘Clean Plate Comp’ until it contains ALL of the movement from the stabilised frame. i.e. you must have a black border all around your newly created red frame with white crosses.

6) Precomp the ‘Clean Plate Comp’ into a comp of the same size (the easiest way to do this is to drag your ‘Clean Plate Comp’ onto the ‘create new comp’ button in the project window.

7) Go into the new comp and stabilise the white crosses using position and rotation options and apply the results.

8) Reduce the size of your new comp back to the size of the original footage and check the results.

You may need to tweak the occasional frame but mine was perfect first time!

Feel free to ask any questions and I’ll do my best to answer them.

Happy stabilising, plate cleaning and un-stabilising!

Dave

G5 2.5 Dual
2.5 gig ram
x800 xt
1TB media storage
23″ Cinema display
19″ IBM LCD – used for Cinema Display
FCP Studio (FCP 5.1.2)
After Effects 7
Shake 4

Currently working on ‘Lookin’ For Lucky’
Feature Film for Albino Injun Productions.
http://www.lookinforlucky.co.uk

[Mark]

Nice work…

[Tony Kloiber]

Off the top of my head…

Stabilize
Clean elements
Make null
Paste tracking info (from stabilize) to null
Parent clean bkg to null.

If your cleaning elements are on another layer you could just turn off stabilize on the original layer apply tracking info to null and parent cleaning elements to null.

And also I think that if you using the paint tools these are relative to the layer so they would move with the layer if you turn off the stabilize.

Now that I thinking about it I guess I’ll have to try it out.
TonyTony

[Tony Kloiber]

Ok yes its mostly right but you need to re-track and then apply to null. This would get you close, but you must be able reuse the info from stabilize so that it would be exact. Obviously you want to track the same spot you used from stabilize.

Because stabilize is using the anchor point and tracking is using the position the two don’t cancel out.

Stabilize
Clean elements
Make null
Paste tracking info (from new track) to null
Parent clean elements to null.

TonyTony

[Tony Kloiber]

Copy the anchor point keyframe (which is the stabilize info)
Precomp your cleaned plate
and paste to position of the precomp the copied anchor point info.

[David Bogie]

There is a useful “remove and reintroduce motion” tutorial in the AE7 CIB (or it might be the AE6.5 Studio Secrets book).

bogiesan