CCTV Settings

CCTV feed appearance is controlled by a single UI Material assigned in project settings. Each camera renders into a CanvasRenderTarget2D, then a dynamic material instance sets the Texture parameter for UMG Image widgets.

flowchart LR
  Capture["Scene Capture"] --> RT["Render Target"]
  RT --> MID["Material Instance Dynamic"]
  Settings["UOperatingSystemCCTVSettings"] --> Mat["M_UI_CCTV"]
  Mat --> MID
  MID --> UMG["Image widget in WBP_CCTV"]

Project Settings

Open Edit → Project Settings → CCTV Settings (section provided by UOperatingSystemCCTVSettings).

Property	Default asset	Description
UI Material	OperatingSystemContent/CCTV/M_UI_CCTV	Parent material for all camera feeds

The C++ constructor sets this default path:

/OperatingSystemSimulator/OperatingSystemContent/CCTV/M_UI_CCTV.M_UI_CCTV

Swapping the default material

1. Duplicate M_UI_CCTV into your project Content folder.
2. Edit the duplicate — keep a Texture parameter named Texture (case-sensitive).
3. Point Project Settings → CCTV Settings → UI Material at your duplicate.

Screenshot — CCTV Project Settings

Capture Project Settings with the CCTV Settings section expanded, showing UI Material assigned to M_UI_CCTV.

Material requirements

Your UI material must:

1. Expose a Texture parameter (used by GetMainViewMID / GetGridViewMID).
2. Be suitable for UMG — typically User Interface domain or unlit sampling of the render target.
3. Optionally add post-process style effects (scan lines, noise, vignette) in the material graph for a surveillance aesthetic.

flowchart TB
  subgraph material["M_UI_CCTV graph (conceptual)"]
    Tex["Texture param"] --> Sample["Texture Sample"]
    Sample --> FX["Optional: noise · scanlines · tint"]
    FX --> Emissive["Emissive / Final Color"]
  end
  RT["Camera Render Target"] -.->|"SetTextureParameterValue"| Tex

Per-camera override

On any BP_CCTV_Actor instance, expand Advanced and set Override Material UI to a different material. Useful when one camera should show thermal imaging while others use the standard feed.

If left unset, the actor loads the material from CCTV Settings at first MID creation.

Render target resolution vs material

Resolution is set per camera, not in project settings:

Layout	Property	Default
Single view	Main View Size	2048 × 1024
Grid tiles	Grid View Size	512 × 256

Higher resolutions improve clarity but cost GPU memory and capture time. Tune on BP_CCTV_Actor, not in CCTV Settings.

Blueprint example — runtime material swap

On Night Vision Toggled
  → For Each (Get All CCTV Actors)
      → Set Override Material UI (M_UI_CCTV_NightVision)
      → (Next capture recreates MID with new parent)

Note

GetMainViewMID caches the dynamic instance. After changing Override Material UI, trigger a layout refresh or toggle camera state so widgets re-bind materials.

Related

• Camera actor — Override Material UI, render target sizes
• CCTV widget — Set Brush from Material
• API — UOperatingSystemCCTVSettings