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I want to take a video of me standing on the right side of the screen, split it, then flip the second half so I'm standing on the left side of the screen. I'm using a green screen, so I'm planning on masking out the top clip. I don't know why I can't find any tutorials on flipping a video. I can only find how to rotate videos. Another side question: how can I add a video in the video editor (which I already did), but be able to access it in the motion tracking view? I would like to cut the clips (and some other basic editing), and then do the masking (duplicating myself)/removing the greenscreen. I really appreciate any help as this is for a school project that is due tomorrow :).

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    $\begingroup$ If you are in the compositor, you can just scale by -1 along the x-axis. $\endgroup$ Jan 17, 2017 at 4:29
  • $\begingroup$ You can first open your footage in the Movie Clip Editor and do your tracking/masking and afterwards add it to the VSE not via Add - Movie but Add - Clip. But this site works best when you don't ask many not closely related questions in one questions but split them up into multiple questions. $\endgroup$
    – Samoth
    Jan 17, 2017 at 8:06

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Compositor: This can be done with the Flip Node within the compositor: Add> Distort> Flip. The node should look like this:

Flip Node

Video-Sequence Editor: This can be easliy don with the flip options in your Properties Panel N. The options should look like this:

enter image description here For your other question I'm pretty sure you need to re-open your video, essentially your not editing the video but making a mask which can be accesed with the Mask Node so it doesn't really matter as long your using the same footage.

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