How Motion Works
Motion uses pixel shaders which move the processing of video effects to the Graphics Processing Unit (GPU) of a modern graphics card. Motion is also compatible with Apple's Core Image technology, allowing one to use the Image Units that come standard with Mac OS X Tiger. Like pixel shaders, Core Image 'stacks' various effects, allowing a number of effects to be combined together without slow-down. A faster graphics card improves performance. Motion is also the first Pro App to introduce FxPlug Apple's plug-in architecture that allows for GPU acceleration.
In Motion, users import their own graphics files and use pre-prepared graphics such as text and shapes. Objects can be grouped into layers, but they always retain their own distinct identity. These various parts are then grouped into a single layer. Selecting that layer permits moving all of the objects as a single body.
Read more about this topic: Motion (software)
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