I'm not quite sure I follow you but do you just want to add a frame hold
underneath the rotopaint for your last good frame, use a switch to er.. switch
to it at the frame after, and apply a tracker to the result.
If you use the rotopaintMask knob you can output an alpha into the alpha or any
desired channel and then comp this over the source with a merge set to matte
(if not premultiplied).
Have you also tried applying the tracker to the transform parameters of the
stroke(s). Best way is to put the stroke(s) into a new layer inside rotopaint
and apply a match move to that layer's transform parameters. This way you can
apply one transform to all strokes.
Might work.
Howard
>________________________________
> From: tk421storm <[email protected]>
>To: [email protected]
>Sent: Thursday, 26 January 2012, 18:49
>Subject: [Nuke-users] RotoPaint - time offset & foreground source
>
>
>Hey all -
>
>I'm new to rotopaint (and nuke), so let me know if any of this doesn't make
>any sense.
>
>I've got a rotopaint with the clone tools that looks nice until the shot
>zooms. In order to fix this, I want to create a new bezier clone object that
>simply takes my painted result from the last frame before the zoom, holds it,
>and does the scaling/transform/rotate with the tracker.
>
>However, I can't seem to make the clone with source set at "foreground" to
>work with time offset. No matter what I put into time offset, the result
>doesn't change. If I change the source to "background" it works as intended.
>
>If I want to do a similar change with another roto node, I have to deal with
>applying and un-applying the tracks in confusing ways; it'd be great to be
>able to reference the paint strokes at a previous frame without needing a new
>node.
>
>Thanks,
>Mike
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