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Let's talk about the three main components of video compositing in Blender, and we'll go ahead down here and press Ctrl+ Up Arrow with our cursor in the UV/Image Editor to maximize this image. So, let's walk through this. There are three main rendering components within Blender that enable you to get images out and work with images. In addition to modeling and animating as we have seen with the 3D view and taking a picture of that image with the camera, Blender offers two other Video Editing work benches.
One is called the Compositor where you composite sequences together in a node-based framework which is the subject of this whole video series, and then this Compositor can later feed what's called the Sequence or where we sequence strips of video together. So let's talk about the Compositor. The Compositor can take in live action video through what's called an Image Input node. It can also take in Background Matte Images and it can also take in the results from the 3D view. Now, you can use the 3D view for actual media that you would want to use, or you can take in a Mask which is just a simply object that you have created in 3D view that comes in and is used to mask out portions of an image.
Now, when you get into really complicated CG scenes and like that, you will want to save these out and maybe render them on a render form and create a file here of CG Renders, and then the Compositor can bring those in through what's called render layers. Render layers are aspects of an image and the Compositor can work with those different aspects to do a whole bunch of different things. Depending on the complexity of the project then you can save your work in progress out to saved renders through the file Output node and then later read those in through the Sequencer.
So, this is the way that the different elements of video come together inside Blender. Once the video is done then inside the Sequencer you can bring in your sound tracks and your audio strips and do cutting and editing and fade overs and all that kind of good stuff. So, those are three main workbenches inside Blender that are seamlessly integrated to provide a complete video processing solution.
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