I tracked some footage and set up the scene and it still appears when I switch to camera mode but when I render there is no background I don't know what option i have unchecked by accident. Overview of my scene

  • $\begingroup$ You need to use the compositor to add the image using alpha over for the scene you want to overlay. $\endgroup$
    – user1853
    Aug 1 '16 at 2:22

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