How to Flip a Video Clip 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 :).
Compositor:
This can be done with the Flip Node within the compositor: Add> Distort> Flip.
The node should look like this:



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


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.