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Does anyone have a better way to reposition keyframed, animated masks?

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David Lawrence
Does anyone have a better way to reposition keyframed, animated masks?
on Oct 27, 2015 at 2:20:23 am

Hi All,

I'm wondering if any of you have found a better way to duplicate and reposition keyframed, animated masks on a layer?

Here's a typical scenario:



The frame is a 2048x2048 (2Kx2K) over/under L/R stereoscopic pair. (This is a proxy, the master is 8Kx8K)

I have a moving subject that I want to mask from the background. For my purposes, an animated feathered mask is fine (no need to rotobrush). My mask animates from the start position to the end position.

Now that I've made a mask for the left eye, I need one for the right. I can easily duplicate the mask, but I can't find an easy way to globally offset mask 2's path keyframes.

The only workable solution I've found is Mathias Möhl's excellent KeyTweak tool:

http://aescripts.com/keytweak/

I select the mask path keyframes for mask 2 and KeyTweak them into place on the right eye part of the frame:



Is there a better way to do this? Expressions maybe? Frankly, this seems like something that should be really easy and would useful to a lot of people.

What's needed (feature request) is a position attribute for masks that's separate from the position attribute for the layer. This would easily solve the problem and seems pretty straightforward to implement. Make sense?


[Walter Soyka] "Out of curiosity, what is the last 10% of the challenge that you can't cover in Premiere? Maybe someone here would have a suggestion, or maybe there's a good area for a feature request."

Premiere's native masking tools are very good. At first, I thought they could handle everything since they're so easy to make and duplicate. The problem is once you add any keyframes to a mask, you can no longer copy it. This forces me into After Effects.

I guess for Premiere, the feature request would be to enable duplication of keyframed masks or somehow allow copy and pasting of path keyframes between masks. But again we run into the postion offset problem so for this to be useful, there'd need to be a mask position attribute as well.

The other issue is that it feels like Premiere is working much harder to keep up with complex masks. I can feel it straining compared to AE. Also, I've had some major rendering bugs getting out from Premiere with lots of complex masks. For now, my workflow is set rough masks in Premiere, then finalize and animate in After Effects.

Anyway that's what I'm up to. Any advice much appreciated!

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David Lawrence
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Roland R. Kahlenberg
Re: Does anyone have a better way to reposition keyframed, animated masks?
on Oct 27, 2015 at 2:53:47 am

Have you tried Effects>Distort>Transform ?

HTH
- Roland

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David Lawrence
Re: Does anyone have a better way to reposition keyframed, animated masks?
on Oct 27, 2015 at 3:32:40 am

[Roland R. Kahlenberg] "Have you tried Effects>Distort>Transform ?"

I don't think that will work because it transforms the layer. I only want to offset the mask. Am I missing something?

_______________________
David Lawrence
art~media~design~research
propaganda.com
publicmattersgroup.com
http://lnkd.in/Cfz92F
facebook.com/dlawrence
twitter.com/dhl
vimeo.com/dlawrence/albums


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