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1.go to node editor and enable use nodes 2.add mask node and mix node 3.in uv editor change from paint to mask(if you want mask image ,upload that image to uv editor ,mask will be placed over your image) 4.LMB(leftmousebutton)+ctrl add point of the curve, close curve with toggle cyclic 5.use this mask as input for mask node and plug mask node to factor of the mix node

for rotoscoping could be use add on http://wiki.blender.org/index.php/Extensions:2.6/Py/Scripts/Animation/RotoBezier  http://www.blendernation.com/2010/11/22/new-feature-rotobezier/

1. go to node editor and enable use nodes
2. add mask node and mix node
3. in uv editor change from paint to mask (if you want a mask image, upload that image to uv editor, the mask will be placed over your image)
4. LMB+Ctrl to add point on the curve, close curve by enabling toggle cyclic
5. use this mask as input for mask node and plug mask node to factor of the mix node

for rotoscoping you could use this add on, see this for more info.

1.go to node editor and enable use nodes 2.add mask node and mix node 3.in uv editor change from paint to mask(if you want mask image ,upload that image to uv editor ,mask will be placed over your image) 4.LMB(leftmousebutton)+ctrl add point of the curve, close curve with toggle cyclic 5.use this mask as input for mask node and plug mask node to factor of the mix node

mask could be animated as well with adding shape keys,if you want mask some image upload that image to uv editor ,mask will be placed over your image

for rotoscoping could be use add on http://wiki.blender.org/index.php/Extensions:2.6/Py/Scripts/Animation/RotoBezier http://www.blendernation.com/2010/11/22/new-feature-rotobezier/

1.go to node editor and enable use nodes 2.add mask node and mix node 3.in uv editor change from paint to mask(if you want mask image ,upload that image to uv editor ,mask will be placed over your image) 4.LMB(leftmousebutton)+ctrl add point of the curve, close curve with toggle cyclic 5.use this mask as input for mask node and plug mask node to factor of the mix node

for rotoscoping could be use add on http://wiki.blender.org/index.php/Extensions:2.6/Py/Scripts/Animation/RotoBezier http://www.blendernation.com/2010/11/22/new-feature-rotobezier/

1.go to node editor and enable use nodes 2.add mask node and mix node 3.in uv editor change from paint to mask 4.LMB(leftmousebutton)+ctrl add point of the curve, close curve with toggle cyclic 5.use this mask as input for mask node and plug mask node to factor of the mix node

mask could be animated as well with adding shape keys

for rotoscoping could be use add on http://wiki.blender.org/index.php/Extensions:2.6/Py/Scripts/Animation/RotoBezier http://www.blendernation.com/2010/11/22/new-feature-rotobezier/

1.go to node editor and enable use nodes 2.add mask node and mix node 3.in uv editor change from paint to mask(if you want mask image ,upload that image to uv editor ,mask will be placed over your image) 4.LMB(leftmousebutton)+ctrl add point of the curve, close curve with toggle cyclic 5.use this mask as input for mask node and plug mask node to factor of the mix node

mask could be animated as well with adding shape keys,if you want mask some image upload that image to uv editor ,mask will be placed over your image

for rotoscoping could be use add on http://wiki.blender.org/index.php/Extensions:2.6/Py/Scripts/Animation/RotoBezier http://www.blendernation.com/2010/11/22/new-feature-rotobezier/