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Split Videos puts two sources on one screen and lets you decide exactly how much space each one gets. Add a narration on top, or keep the sources’ own audio. Best for: an avatar or presenter over gameplay, a reaction over a clip, before/after comparisons, and tutorials with the demo underneath.

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Step by step

1

Choose the two sources

Two source slots with Browse library, upload and random buttons

① First video (top / left) · ② Second video (bottom / right) · ③ Swap

Each slot accepts a video or an image: a completed Crealix project, an avatar, an AI clip, an AI image or an upload (MP4, MOV, WebM, JPG or PNG).
  • Browse library — pick from your media library.
  • Upload (arrow icon) — or drop a file onto the slot.
  • Random (shuffle icon) — picks a gameplay clip you haven’t used yet.
  • Swap (③) — exchanges the two sources.
Once a source is in, click the speaker on its thumbnail to mute or unmute it (avatars keep their audio automatically). Images can be Animated (slow zoom) or Static.
2

Choose format and language

9:16, 16:9 or 1:1 and the narration language.
3

Set the layout

Layout settings with sliders for each video and a live preview of the split

① Top / Bottom or Side by side · ② Space distribution · ③ Live preview

  • Top / Bottom or Side by side (①).
  • Space distribution (②) — a slider per video, from 10% to 90%, or Quick presets: 50/50, 60/40, 70/30 or Custom.
  • Live preview (③) — drag the divider directly in the preview to fine-tune the split in real time.
  • Seam — Blend (a soft gradient between the two) or Divider (a hard line).
4

Choose the length

  • Auto — uses the narration’s length, or the longest clip if there’s no narration (the shorter one loops).
  • 15, 30 or 60 seconds — both clips loop or trim to fit.
5

Add narration (optional)

Write a story to narrate over the split (up to 17,000 characters — the counter shows the estimated duration), or click Write with AI. Starters help: Hook + reveal, Problem → solution, Tutorial voiceover, Story time and Product demo. Leave it empty for no voiceover.
6

Pick a caption style and create

Captions are transcribed from the audio that’s heard — your narration if you added one, otherwise the source that isn’t muted (the talking clip). Pick a style now; you generate or regenerate the captions in the editor after creating.

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Layout recipes

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Cost

Creating a split video is free. You only pay for the narration (if you add one) and for cloud rendering when you export — browser rendering is free.