介绍

遮罩可以在"图像"和"视频片段"编辑器中创建，使用方法为将标题中的模式更改为“遮罩”。这将向编辑器面板添加各种工具和属性，同时隐藏与遮罩交互不需要的其他工具和属性。

Masks have many purposes. They can be used in a motion tracking workflow to mask out, or influence a particular object in the footage. They can be used for manual rotoscoping to pull a particular object out of the footage, or as a rough matte for green-screen keying. Masks are independent from a particular image of movie clip, and so they can just as well be used for creating motion graphics or other effects in the Compositor.

../../_images/compositing_types_input_mask_example.png

在合成器使用遮罩节点孤立(就是将需要的元素扣像)目标。

虽然 “视频剪辑编辑器” 和“图像编辑器” 用于编辑遮罩，但“合成器”和"图像序列”仅使用已创建的遮罩。

Masks can be animated over the time so that they follow some object from the footage, e.g. a running actor. This can be achieved with shape keys or parenting the mask to tracking markers.

遮罩数据块类型

遮罩数据块类型包含多个遮罩层和样条线。它们是用于掩蔽目标的最高级控制级。遮罩可以在不同的地方重用，并为它们所包含的所有实体保存全局参数。