Four corner tracking with Natron

This is the demo video from my "Four Corners" article that was published in Linux Magazine #221. In the article you can learn hwo to embed an image or video within another video and make it part of the scenery. You can read the full article online for free at: http://www.linux-magazine.com/Issues/2019/221/Embed-Elements-into-Your-Clips-Using-Natron