Here are the features of the slice editor : A simple example is described in this article : Getting Started You can see the slice as the input-mapping, and the perspective transform as the output-mapping. This is called a slice, and you can split your layer in many slices, so you could map specific parts of image differently. Indeed, instead of using the whole image, you can choose to use only a small part of your media. More options can be found in the Mapping tab in the properties-view :Įspecially the button Slice Editor to edit the portion of your image that will be used for the mapping (shortcut is CMD+J) : If you need to remove any mapping on your layer, click the reset mapping button in the properties-view. Select the mapping tool in Millumin to do so (or press M) :Īs you can see, this perserves the perspective :Īlso, this creates a constraint on your layer : any media played by this layer will be displayed in this mapping (whatever ratio the media have). This is the main technic for videomapping : moving the corner of your image until it matches your surface on stage, while preserving the perspective.

All the technics for this purposes are called videomapping. When working with video, it is often required to correctly adjust the projection so it matches the stage set.