I created a camera tracking animation: a dinosaur walking in my street. Everything worked fine until I deleted the video background and added a new one. In render view I can see the result I want: my 3d dinosaur, the shadow catcher and the video at the background. When I render it, the video does not show. The background is a gray color. I don't understand why it doesn't works, because the first video background did render in the final result.


  • $\begingroup$ Please use the edit link at the bottom of your question (i.stack.imgur.com/lXFuK.png) and add more information. We don't know how you set up your project Add images (meta.stackexchange.com/questions/75491) that might help us understand your render layers, or compositing nodes or render settings. $\endgroup$
    – user1853
    Apr 23, 2018 at 19:39
  • $\begingroup$ Okay, can I also give the file and the video I want to be in the background? $\endgroup$ Apr 23, 2018 at 20:49
  • $\begingroup$ @JesseAlberts You can upload a .blend here: blend-exchange.giantcowfilms.com, but there is no need for the video. $\endgroup$
    – JakeD
    Apr 23, 2018 at 21:34
  • $\begingroup$ Did you update the composite node to use the new video? $\endgroup$
    – sambler
    Apr 24, 2018 at 2:32
  • $\begingroup$ No I don't. But I didn't used nodes for the first video either. Anyway, where can I find those nodes? $\endgroup$ Apr 24, 2018 at 5:54

1 Answer 1


Thank you! I found the nodes I needed to change just under one button: screen layout 'compositing' > Node tree display and edit 'compositing nodes'. The wrong display was set so I couldn't see the nodes for background.


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