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<p>What I meant is an advanced mask tool which moves the mask and
optionally (rotation, perspective, scaling) the underlying image
along with it then you have what you call pixel tracking. With
this tool you can achieve fanatical effects, like color correction
applied only on a mask and only on an object. Even though the
object is moving, you can do a color correction and make the
background in a completely different color, and on top of that
another layer. I would have liked to have this tool when I made
the short video for Cinelerra. That's why I don't think we should
program these two things like mask tracking and pixel tracking
completely separate from each other. I think we could do that in
one tool.</p>
<div class="moz-cite-prefix">Am 20.05.20 um 20:18 schrieb Rafa Mar
Multimedia en Gnu\Linux:<br>
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<div dir="ltr">With all my respects Sam, but the mask tool is not
the right one in this case. The skins tool is used to cut, but
not to deform a video clip or image.<br>
The ideal complement to a pixel tracking tool is perspective.<br>
I do not know programming, but perspective has four points very
defined by coordinates. Perhaps you could keep track of the four
corner points on the screen and then assign the coordinates of
each of these 4 points to the perspective points.<br>
The mask could be used to make rounded corners of the video clip
you have on the screen, or to trim a finger on top of it.<br>
Normally these works are done frame by frame, it is the way that
guarantees a perfect finish.</div>
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