I've been watching this tutorial on how to split your screen with a line that grows from nothing and bisects the screen. Letting you manipulate the two halves of the screen independently ; having one or the other move up and down, grow and colour change.

The tutorial is here:https://www.youtube.com/watch?v=oOZY7Yks6hI

enter image description here

He uses matte to determine the alpha channels of the two halves of the screen. He then parents the alpha channel to the matte.

I was hoping to do this process entirely in the VSE, however I don't know if theres the equivalent of the pen tool in Blender that AE has. I think I could use masks to achieve this but 1. I don't know how to make or use masks in the VSE 2. I don't know if it'll produce the desired result.

Any help would really appreciated!

  • $\begingroup$ I'd be doing this in Blender's 3D window, using planes textured with the same video, each distorted, split, treated as you wish, mostly straight forward and hassle free. Your imagination would be pretty much the only limit when it comes to the effects you can achieve. $\endgroup$
    – Edgel3D
    Jan 21, 2017 at 2:07
  • $\begingroup$ could you go into some more detail on how you would texture the planes to the video or image? Could i just use ordinary planes or would i have to modify them in some way for it to work? Cheers for all the help with my questions man! $\endgroup$
    – user33287
    Jan 21, 2017 at 14:28
  • $\begingroup$ Also some pictures or GIFS on how to do it would be extremely helpful as i find it hard to understand what you mean from reading text alone, images or videos would be easier to follow along in all honesty. If my question is too vague could you point me to similar questions with answers that i can use to piece together my own answer? CHEERS $\endgroup$
    – user33287
    Jan 21, 2017 at 15:02
  • $\begingroup$ Possible duplicate: blender.stackexchange.com/questions/15561/… $\endgroup$
    – user1853
    Jan 22, 2017 at 2:30
  • 2
    $\begingroup$ This can be done in the vse as well. In the uv image editor define a mask and animate its appearance. Now add your strip in the vse and go to properties (n key) add a modifier 》mask. Then choose your animated mask. With the strip selected add an effect strip 》transform and set its blend type to Alpha Over. You should be able to move the masked video anywhere on screen $\endgroup$
    – 3pointedit
    Jan 25, 2017 at 0:02

1 Answer 1


Splitting screens:

enter image description here enter image description here

The method I've used here is using the same principle for both. A 2D plane for each video, one laid just above the other and the camera looking straight down.

Note: Both are rendered using OpenGL, not Blender's internal render.

With the split screen an 'inviso mask' face was added to the lower edge of the white line. (thin rectangular plane laid just above the video planes) The line was simply rotated.

(inviso mask - plane with transparency set to 0.008)

In the torn or jaggy edge version, a single plane was used and textured with it's video. A jagged edge (vertices) was cut into that using the knife function. That was then duplicated (SHIFT-D) and dropped a little under the first

At the opening frame, only the top plane and video can be seen until reaching the frame where shape keys INSTANTANEOUSLY fold the respective outer edges of each plane downward and underneath. (hinged at the jagged edge)

In this example the left side of the top plane, and right side of the lower plane are folded down at the exact same frame that we start to rotate (tear) both planes out from the bottom center. (origin point set to the cursor which is already set to bottom center)

Twisting the planes in the Z axis on the way down can enhance the effect.

Underneath both planes a 3rd can be added as shown here textured with our favorite movie studio pattern.

Both Blend files are attached and compressed. VE5 (the 2nd) the straight out split screen, VE4 (1st) the torn screen.

If as you mentioned, you're still needing video footage as to how it was done that can be organised. (hasn't been done yet)

The Blender files: (You'll need to substitute the original videos with your own)

Note: Rendering used OpenGL, not Blender's internal render.

Thanks also to @3pointedit. That could be another solution for you to try.

  • $\begingroup$ cheers for the answer, i think it answers my question but before I select my answer could you tell me why that now that i'm looking at your linked blend file that all the objects are pink? Cheers. $\endgroup$
    – user33287
    Jan 27, 2017 at 21:30
  • $\begingroup$ Yes, the movie files aren't there, you have to substitute them with your own (texturing panel) for each plane. $\endgroup$
    – Edgel3D
    Jan 27, 2017 at 22:08
  • $\begingroup$ ah ok, that makes sense! I'll have a go now, cheers! $\endgroup$
    – user33287
    Jan 27, 2017 at 22:13
  • $\begingroup$ would i do that in the material or texture panel? Still not sure what the difference is really $\endgroup$
    – user33287
    Jan 27, 2017 at 22:14
  • $\begingroup$ Select one of the planes, click on the material panel, (for safety) then the texturing panel go down to the image tab, open that, click on the upper folder and choose your own folder and image. $\endgroup$
    – Edgel3D
    Jan 27, 2017 at 22:16

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