Hi,

I observed the video frame which you have uploaded, it looks like you are trying to make a horizontal split-screen where two different clips play at the same time—one on the top half and one on the bottom half.

Here's how to do that in CapCut:

1. Import both video clips.
2. Put your first clip on the main timeline.
3. Tap Overlay → Add Overlay and choose the second clip.
4. Select the top clip (or bottom clip) and use Mask.
5. Choose the Rectangle (or Linear) mask.
6. Resize the mask so only the top half (or bottom half) of that clip is visible.
7. Position the masked clip where you want it.
8. Select the other clip and resize/reposition it so it fills the remaining half of the screen.
9. If there's a visible gap or overlap, fine-tune the mask feather and clip positions until the seam is clean.

If you're using the desktop version, you can also simply:

• Crop the first clip to the top half.
• Crop the second clip to the bottom half.
• Stack them on separate tracks.

If you want the "Instagram Reel" look

Many creators also:

• Keep the split exactly 50/50.
• Add a thin white or black divider line between the clips (optional).
• Zoom each clip slightly so there aren't black borders.

Beginner-friendly alternatives

If CapCut feels overwhelming, we recommend following alternatives:

• VN Video Editor – Probably the easiest transition from CapCut, with fewer AI features and a cleaner interface.
• InShot – Great for simple Instagram and TikTok edits.
• DaVinci Resolve (desktop) – Much more powerful, but worth learning if you plan to edit regularly. It has a steeper learning curve than VN or InShot.

For someone just starting, VN is probably the sweet spot: it has overlays, masks, keyframes, and split-screen tools without as much clutter.

One question: Are you trying to make a static 50/50 split like in your example, or are you referring to the effect where the dividing line moves across the screen (revealing one clip over the other)? Those are done slightly differently.