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I made a 3D tracking, and noticed that after rendering the image is cropped. I got the camera through the 3D tracking. Why is this happening and can we fix it without making new 3D tracking?

Here is a screenshot at the top is the compositor, and below is render: enter image description here

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    $\begingroup$ check to make sure that your render settings for the scene are set to the same size as the background image. $\endgroup$
    – David
    Commented Apr 22, 2015 at 21:29
  • $\begingroup$ @David Thank you! That was my mistake! :) It worked! P.S. I don't know, how to mark a comment as the answer?) $\endgroup$
    – Rumata
    Commented Apr 22, 2015 at 21:41
  • $\begingroup$ He needs to post an answer, if he doesn't do it in around 12hrs someone else can post it instead for you. $\endgroup$
    – J Sargent
    Commented Apr 22, 2015 at 22:02
  • $\begingroup$ @David Post that as an answer for the OP please :D $\endgroup$
    – J Sargent
    Commented Apr 22, 2015 at 22:03
  • $\begingroup$ @NoviceInDisguise answered. $\endgroup$
    – David
    Commented Apr 22, 2015 at 22:46

1 Answer 1

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When compositing a render over an image you have to make sure that your render dimensions for the scene are set to the same size as the background image.
render dimensions

Your other option (say if the picture quite large) is to scale the picture to match the render size.

That can be done by adding a Scale node set to Render Size, which will give you a node setup like this.
compositor nodes

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