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How to Use Vertical and Horizontal Overlays for Live Streaming

A practical guide to portrait and landscape overlays: choose the right platform workflow, build each composition, route outputs, and preview both orientations before starting.
Opened Runtime4 min Written byDocumentaryTube Team
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Use separate portrait and landscape compositions whenever possible. A 16:9 horizontal scene and a 9:16 vertical scene frame content differently, so one overlay may crop faces, titles, alerts, or other essential details. Choose the platform’s dual-format workflow or configure separate outputs in your broadcast software, then preview both orientations before going live.

Why one overlay may not work in both orientations

Horizontal video is typically framed at 16:9, while vertical video is 9:16. A landscape composition can be center-cropped for portrait viewing, but the crop may cut off important parts of the picture or overlay. Treat the two formats as different compositions, not simply the same scene rotated.

Where the platform or software allows it, make or adjust a dedicated portrait layout. Keep the subject and essential information visible in each view, and check titles, alerts, faces, and other graphics against both canvases. There is no universal safe-zone measurement established here, so preview the actual layouts rather than relying on a fixed margin.

Choose the workflow for your platform

Platform or workflow What it supports What to check
YouTube Live Control Room Horizontal and vertical formats, with vertical layout choices including center crop, fit-to-phone-width, and stacked. YouTube also documents third-party encoder routing. Set the vertical layout and verify that the correct content and formats go to the corresponding stream keys before starting. YouTube says vertical format cannot be added after a stream has started. YouTube Help: Create a YouTube live stream with both horizontal and vertical layouts.
TikTok LIVE Studio A dual layout that presents landscape and portrait video for viewers’ screen orientations. Check that the widescreen composition works for PC content and the portrait composition is readable on mobile. TikTok LIVE Studio: Dual layout.
Twitch dual format A dual-format workflow. Twitch’s help page names OBS Studio 32.0.0 or newer and other broadcast applications as compatible options. Verify the current software requirements and follow Twitch’s scene-operation guidance; requirements and platform behavior can change. Preview on a phone in portrait and landscape. Twitch Help: Dual-format streaming.
Restream Studio or OBS workflow Restream documents portrait and landscape output through Studio and its OBS plugin. Check channel orientation and output preview. Restream says an active channel’s orientation cannot be changed during a Studio stream. Restream Studio vertical streaming and Restream OBS plugin.

Native platform layouts and third-party encoder setups are not interchangeable. Follow the settings for the platform and software you are actually using.

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Set up both compositions before going live

  1. Choose how you will deliver the formats. Decide whether to use the platform’s dual-format feature or a broadcast application configured for portrait and landscape outputs. YouTube documents both Live Control Room editing and third-party encoder use; TikTok LIVE Studio and Twitch each describe their own dual-format workflows.
  2. Arrange the horizontal scene. Place the main content and overlay elements for landscape viewing. Keep essential information within the composition instead of assuming a later crop will preserve it.
  3. Create or edit the portrait scene. Preview the 9:16 view and reposition or stack key elements for a phone screen. In YouTube’s documented vertical editor, the choices include center crop, fit-to-phone-width, and stacked; the editing canvas lets creators adjust zoom and position.
  4. Route the right output. For YouTube third-party encoder setup, select the vertical stream key and check that the intended content and formats go to their corresponding keys.
  5. Preview both orientations. Check that titles, alerts, faces, and essential visual information remain visible in each. Twitch recommends checking the stream on a phone in portrait and landscape; its guidance also describes using the primary horizontal scene menu to transition linked scenes.
  6. Confirm what cannot be changed mid-stream. YouTube says vertical format cannot be added after the stream starts. Restream Studio says an active channel’s orientation cannot be changed during a stream. Set up the formats before you begin.

How to decide between cropping and separate layouts

  • Use a crop when the important action stays within the cropped area and your platform offers a crop option that frames it adequately.
  • Use a fit-to-phone-width or stacked option when YouTube’s vertical choices better preserve the content than a center crop.
  • Build a separate portrait composition when the vertical view needs different placement, scale, or stacking to keep the subject and overlay legible.
  • Check the full signal path when using an encoder: platform support, software compatibility, output preview, stream-key routing, and whether orientation can still be changed after going live all matter.
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