I'm using Beta's rotoscope 2.0. Why not have a keyboard command to allow you to 'paint' straight lines with the rotobrush?
I'm using Beta's rotoscope 2.0. Why not have a keyboard command to allow you to 'paint' straight lines with the rotobrush? And these lines should lock more accurately to the subject, especially if it doesn't move much. A keyboard command might tell Sensei that this line never changes over time.
Qing Li commented
That is useful, thank you. I meant that if one could make a new selection somewhere else on the image, starting with a straight line it would save some time.
Also, while of course the image shape could change over time, sometimes it doesn't. Like when you want to rotobrush a hardcover book that a character is carrying and it doesn't change in basic shape or perspective. Or if it does when the character turns, etc., one can easily adjust it. It would be like adding mask keyframes within a rotoscope. Now, if that were possible, life would be ever better!!
Hi Qing Li,
Thank you for submitting this feature request. The Roto Brush tool can paint selection strokes along straight lines by holding Shift and clicking without dragging; this will draw a straight stroke from the end of your previous stroke to current brush position.
Keep in mind that the Roto Brush selection detects edges and does not take the specific shape of a selection into account ( because this shape could change over time due to movement, perspective change, etc). Be sure to keep as many strokes as possible in the middle of the selection and do not draw around the outline unless necessary.
If the subject or object you are selecting with Roto Brush is rigid within the shot, you might also try playing with the stroke duration in the Timeline, possibly keyframing the position of the stroke to give Roto Brush the same starting selection each time.
- John, After Effects Engineering