How do I record split-screen Instagram Reels on iPhone?

Use SplitRig. Open the app, tap the layout picker, choose Split Screen, hit record. Both iPhone cameras record at once into a single 1080p MP4 in 9:16 portrait. Save to Camera Roll, then upload to Reels. Adjustable 30–70% split ratio, no editor required.

Does Instagram support split-screen video uploads?

Yes. Instagram Reels accepts any standard 9:16 MP4 from your Camera Roll. SplitRig produces exactly that format natively, so no re-encoding is needed.

What's the best split ratio for Reels?

For symmetric reaction content, use 50/50. For travel or product Reels where the action matters more than your face, use 30/70 (front camera small, rear camera large). For talking-head Reels with B-roll, flip it: 70/30.

How to record Instagram Reels with split screen on iPhone

Two cameras, one Reel. The fastest way to a side-by-side video on iPhone, with no editor.

Why Reels creators want split screen

Split-screen Reels — your face on one half, the action or context on the other — work because they tell two stories at once in a single 9:16 frame. Reaction content, side-by-side comparisons, food prep with the cook + the dish, fitness with form + result, podcasts with two interviewees: every category benefits from the layout.

Instagram's built-in tools do let you record clips and stitch them, but they don't natively record two cameras simultaneously into one file. Recording two takes and editing them together kills the spontaneity. SplitRig records both cameras in a single take.

Step-by-step: record a split-screen Reel

Install SplitRig from the App Store (free, no account).
Open the app and grant camera + microphone permission.
Tap the layout picker in the bottom control tray.
Choose Split Screen. The screen splits between front and rear cameras.
Adjust the divider. Drag the split bar up or down to shift the ratio anywhere from 30/70 to 70/30 — useful when one camera's content needs more real estate.
Tap the record button. Both feeds capture simultaneously into one MP4 file.
Stop recording. The video saves to your Camera Roll.
Open Instagram, tap "+", choose Reels, tap the gallery icon, select your SplitRig recording, add audio/captions/hashtags, post.

Adjusting the split ratio for different scenarios

50/50 — equal weight. Best for symmetric content like interviews or A/B comparisons.
30/70 (front small, rear large) — your face is the secondary element, the action is the primary. Best for travel, food, or product reels.
70/30 (front large, rear small) — you're the primary. Best for talking-head Reels with B-roll on the side.

You can also switch from Split Screen to Picture-in-Picture or Face Mode mid-recording without stopping the file.

Reels best practices for split-screen content

Hook in the first 1.5 seconds. Reels viewers scroll fast — both halves of your split should show something interesting immediately.
Match your audio. Use Instagram's trending audio when uploading. Add it on Instagram, not in SplitRig (the SplitRig recording uses the iPhone's mic).
Keep the divider at 50/50 for "duet" reactions. Symmetrical splits read as comparison/conversation.
Add the GPS speedometer overlay for travel or activity Reels. SplitRig bakes it into the video — no editing required.
Keep recordings under 90 seconds — Reels caps at 90 by default, though longer is allowed.

Resolution and aspect ratio

SplitRig records at 1080p portrait (1080×1920, 9:16) — exactly what Instagram Reels expects. No re-encoding when you upload, no quality loss, no aspect ratio crop. The split happens at the exact halfway point of the frame, perfectly aligned with how Instagram displays.

What about Instagram's built-in "Layout" feature?

Instagram has a Layout option inside Stories and Reels that lets you record up to four short clips and combine them into a grid. It's useful for short multi-take Reels but has three limitations:

Sequential, not simultaneous — you record one clip, then the next. Can't capture both cameras live at the same time.
Limited to short clips — typically 5–15 seconds per pane.
No layout flexibility mid-recording — once you pick a grid, you're locked into it.

For genuine simultaneous dual-camera Reels, SplitRig is the cleaner option.

Frequently asked

Does Instagram support split-screen Reels uploads? Yes — Reels accepts any standard 9:16 MP4 in your Camera Roll. SplitRig produces exactly that.

Can I add Instagram audio after recording? Yes. Record with SplitRig (it captures the iPhone mic for sound), then on upload to Reels, swap in trending audio from Instagram's library.

Is the audio synced? Yes. SplitRig captures audio at 48 kHz with frame-perfect sync to the video. The split-screen composite has no drift.