ADOBE AFTER EFFECTS: Forum Expressions Tutorials Creative Cloud

mocha tracking

COW Forums : Adobe After Effects

<< PREVIOUS   •   FAQ   •   VIEW ALL   •   PRINT   •   NEXT >>
Michael Lewy
mocha tracking
on Sep 4, 2019 at 2:07:06 pm

I am trying to use mocha to track a face to add a monster like skin.
I am having trouble as the track seems to move.
If I use corner pin data the track does not seem to line up with the image I am trying to use.
https://www.instagram.com/p/B17bDxmFsy0/?utm_source=ig_web_copy_link
here is a test I did, any help would be appreciated.


Return to posts index

Eric Santiago
Re: mocha tracking
on Sep 4, 2019 at 5:02:09 pm

Is the reference footage that treatment?
Might be too much going on for Mocha to track.
I was playing with something similar and Mochar works best if there are solid with contrast pixels to track.


Return to posts index

Michael Lewy
Re: mocha tracking
on Sep 4, 2019 at 6:07:01 pm

I'm having a little more luck but I cant figure out why the mask is way over there.

see image.



also when I try to link corner pin data to a null it doesnt work it only works in tranform.


Return to posts index


Martin Brennand
Re: mocha tracking
on Sep 4, 2019 at 11:58:33 pm

Is there a mask around the image you're trying to corner pin?

That might be causing the issue. Corner pin operates assuming you're working with image dimensions that are the same size as the comp. You can get around this by precomping the layer and fitting the layer to the size of the comp.

See here and search for "Applying Corner Pin for Layers with different dimensions"
https://borisfx.com/support/documentation/mocha/6.0.0/#_exporting_tracks_to...

Martin Brennand | Product Manager | Mocha - Boris FX (Imagineer Systems)


Return to posts index

Michael Lewy
Re: mocha tracking
on Sep 5, 2019 at 2:11:26 pm

this is really helpful thanks
but now I have another problem when I apply a mask it looks like this.
any ideas


Return to posts index

Martin Brennand
Re: mocha tracking
on Sep 9, 2019 at 12:02:09 am

Again, it looks like you're applying the mask to the corner pinned layer. Adding a mask to a layer that is corner pinned will change the dimensions of the layer and therefore change the way the corner pin is applied.

Go like this:
1. Precomp and expand the insert layer inside the comp
2. Apply the corner pin to the precomp
3. Either:
A) Precomp the corner pinned layer to maintain the dimensions and apply the mask OR
B) apply the mask to a new solid and use it as a track matte.

Martin Brennand | Product Manager | Mocha - Boris FX (Imagineer Systems)


Return to posts index

<< PREVIOUS   •   VIEW ALL   •   PRINT   •   NEXT >>
© 2019 CreativeCOW.net All Rights Reserved
[TOP]