Effect Image Mask - video editor

the Effect Image Mask for Video Editor
function for
- get the mask from image, crop the video as shape
the dialog
the parameters
- File, the image file to ge the mask, for example:
- Type, values
  - Keep, will keep the mask shape, remove others
  - Remove, will remove the mask shape, keep others
note
- about the file
  - you can use transparent images that only contain the shapes you need
  - or border withblack (or other colors with different shapes)
- the shapes should be Featheror other antialiased borders
  - without feather you got:
    for
  - with feather you got:
    for
  - the v2mixer will copy the feather(antialiased) from your image. look closer:
    and
- the border
  - the three corners of the picture with the same color will be used as the background, the others will be used as the foreground(the mask)
- the size
  - create an image same size as video, is the easiest way.
    - with Effect Move Resize the image have to same as the size set there, not the video size.
- no need to same fade(feather) for all, can fade 10 pixels for the top, but 50 pixels for the bottom, and the bottom will be composited with a long tail shadow(or the translucent, any size, anywhere of any intensity).
- on top of that, you can draw arbitrary images yourself, instead of very symmetrical geometry, which might look better.