13. Camera Tracking in Blender

When you want to mix your 3D objects into a real-world video, you need a camera in the 3D world that moves exactly the same way as the camera that filmed the real-world footage so that the 3D objects fit perfectly into the scene. Camera tracking is the process that allows you to track features in the real video to give Blender information about the changes in perspective so that it can generate a 3D camera that mimics the movement of the real one. Until very recently, you needed expensive specialized software for this purpose. Now Blender provides an efficient alternative, and the best thing about it is that you don’t need to import/export scenes or use any other software; everything you need is already inside Blender! ...

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