# Source Signal The Source Signal scope displays a live preview of the input video. It doubles as the primary inspection tool — zoom into pixels, read colour values, reveal faint neutral casts with Chroma Boost, overlay zebras and focus peaking, isolate channels, and compare snapshots.

Source Signal scope with color picker pins

## Zoom & Pan Zoom up to **15×** and pan freely across the image — the same controls used in professional image editors. | Input | Action | | --------------------------- | ------------------------------- | | **Mouse wheel** | Zoom in/out (centred on cursor) | | **Space + Left-click drag** | Pan the zoomed view | | **Middle-click** | Reset zoom to 1× and centre | A **mini-preview** thumbnail appears in the top-right corner while zoomed, showing a yellow rectangle for the current viewport. Toggle it with the **Show zoom preview** setting.

Zoomed view with mini-preview thumbnail

Zoom & Pan is also available in the [False Color](/nobe-omniscope/scopes/false-color.md) and [Skintone Scope](/nobe-omniscope/scopes/skintone-scope.md). ## Channel Isolation Solo individual colour channels for quick inspection of noise, spill, or exposure per channel. | Channel | Description | | ---------------------- | ------------------------------------- | | **RGB** | Full colour (default) | | **Red / Green / Blue** | Single channel displayed as grayscale | | **Luma** | Luminosity (Rec. 709 weighted) | When a mask is active, the **Draw masks in RGB** option forces the mask overlay to display in full colour even when a single channel is soloed.

Blue channel isolation

## Color Picker Hold **Alt** to activate the colour picker, or enable **Always show** in settings. Click to place persistent **colour pins** (up to 30) anywhere on the image. | Input | Action | | ------------------------------------------- | -------------------------------------------------------------------------- | | **Alt** (hold) | Show colour picker | | **Click** (with picker) | Place a colour pin | | **Shift + Click** | Copy HEX value to clipboard | | **Ctrl + Click** | Add value as a [global target](/nobe-omniscope/features/global-targets.md) | | **Middle-click** or **Double-click** on pin | Remove pin | ### Picker formats RGB 8-bit · RGB 10-bit · RGBY · RGB float · HEX · CMYK · HSV · Nits ### Picker options | Setting | Description | | ---------------------- | ------------------------------------------------ | | **Source** | Input Source, Rescaled Source, or Working Signal | | **Sampling area** | 1×1, 3×3, 5×5, 7×7, or 9×9 pixels | | **Monochromatic** | Render picker overlay in grayscale | | **Show on hover only** | Hide the readout until the pointer moves | ## Data Analyser A **17×11 pixel grid** that shows individual code values around a chosen position. Drag to reposition the analyser area on the image.

Data Analyser showing 10-bit code values

| Setting | Description | | ------------- | ----------------------------------------------------------- | | **Format** | 8-bit, 10-bit, 12-bit, 32-bit float, Nits, Nits per channel | | **Source** | Input Source, Rescaled Source, or Working Signal | | **Font size** | Small or large | The status bar at the bottom shows the video data type (RGB/YCbCr), format, line number, and sample number. See also: [Data Analyser (QC)](/nobe-omniscope/qc/data-analyser.md) ## Focus Peaking Edge-detail overlay that highlights in-focus areas. Requires **Live Pack**.

Focus Peaking in Regular mode

| Setting | Description | | --------------- | ------------------------------------------------------------------------------------------------------------------------------------------ | | **Mode** | **Regular** — coloured edges over the image · **Edges** — enhanced white edges on black · **Enhanced Edges** — binary white edges on black | | **Threshold** | Edge sensitivity (0–100 %) | | **Peak colour** | Colour used for the Regular mode highlight (default: red) | See also: [Focus Peaking (Live Pack)](/nobe-omniscope/live-pack-add-on/focus-peaking.md) ## Chroma Boost Available in version **1.11.33+**. **Chroma Boost** is a preview-only inspection aid that amplifies subtle colour differences in low-saturation areas. Use it to spot faint green, magenta, or blue contamination in whites, greys, walls, fabrics, skin-adjacent neutrals, and other nearly neutral surfaces. Unlike a global saturation control, Chroma Boost is strongest near neutral colours and tapers off as saturation increases, so already colourful parts of the image stay more stable.

Chroma Boost amplifies subtle colour differences in near-neutral areas

| Setting | Description | | ---------------- | ---------------------------------------------------------------------------------------------------------------------- | | **Chroma Boost** | Enable or disable the inspection mode. Also available from the Source Signal right-click menu. | | **Amount** | Controls how strongly low-saturation colours are amplified. Start low for subtle checks and increase only when needed. | ### What it affects * **Source Signal preview only** * **Does not** modify the source signal * **Does not** affect scopes, QC measurements, outputs, or recordings When enabled, the Source Signal tab shows a **Chroma Boost** status badge so it is easy to see that the viewer is in a temporary inspection mode. ## Zebra Overlays Diagonal stripe patterns warn about overexposure or illegal saturation levels.

Luma zebra overlay

### Luma zebra | Setting | Description | | ----------------- | ----------------------------------------------------------------------------------------------------------------------- | | **IRE threshold** | 0 %–110 % (default 100 %). Regions above the threshold show **black stripes**; sub-black regions show **blue stripes**. | ### Saturation zebra Enable alongside luma zebra for additional saturation warnings: * Saturation above **70 %** → yellow stripes * Saturation above **99 %** → orange stripes ## Safe Area Guides Built-in overlay guides accessible from the scope settings or right-click menu. | Guide | Description | | ---------------------------- | ------------------------------------------------------------------------------------------------- | | **Title Safe / Action Safe** | Two concentric rectangles. Default: Title 90 %, Action 95 %. Configurable colour and percentages. | | **Thirds** | Rule-of-thirds grid with configurable colour | | **Crosshair** | Centre crosshair with configurable colour | ## Custom Overlays Load **PNG images with alpha transparency** on top of the Source Signal — safe-area guides, framing references, branding, or composition grids. Select the active overlay in the scope settings or from the [Overlays](/nobe-omniscope/features/overlays.md) window. See [Overlays](/nobe-omniscope/features/overlays.md) for full details on managing overlays. ## HSL Range Mask Isolate a hue/saturation/luminance range on the preview. Pixels outside the range are rendered as black. | Setting | Description | | -------------- | ------------------- | | **Hue** | Start/end (0–360°) | | **Saturation** | Start/end (0–100 %) | | **Luminance** | Start/end (0–100 %) | Use **Load from mask** / **Save as mask** to sync with the global mask. ## Mask Drawing Click and drag to draw a mask shape directly on the preview. | Shape | Description | | ------------- | ------------------------- | | **Ellipse** | Draw an elliptical region | | **Rectangle** | Draw a rectangular region | Draw modes: **Draw**, **Paint In**, **Paint Out**. A **single line** mode isolates a single scan line. ## Snapshot Compare When a [snapshot](/nobe-omniscope/features/snapshots.md) is loaded, compare it against the live signal: | Mode | Description | | ------------------- | ---------------------------------------------------- | | **Horizontal wipe** | Vertical divider — **W + drag** to adjust position | | **Vertical wipe** | Horizontal divider — **W + drag** to adjust position | | **Opacity blend** | **W + drag** to adjust blend amount | ## Blanking Alarm When [Blanking Detection](/nobe-omniscope/qc/blanking-detection.md) is enabled globally, the Source Signal draws coloured bars over detected blanking regions on all four edges, with optional **blinking alert** (1-second cycle). ## Display & Color Management | Setting | Description | | ----------------------- | ---------------------------------------------------------------------------- | | **Brightness** | Override global brightness per scope (10–100 %) | | **Monitor ICC profile** | Apply system or custom ICC profile | | **OCIO colour space** | Select input and display colour spaces (requires OCIO config in Preferences) | | **Rotate** | Rotate the frame 90° CW or CCW | | **Flip / Mirror** | Flip or mirror the preview | ### macOS Quick Presets | Preset | Configuration | | ------------------------ | ---------------------------------- | | **Match Resolve Viewer** | Rec. 709 preview with tone-mapping | | **Match NDI Monitor** | Unmanaged, no ICC, no tone-mapping | ### HDR / EDR (macOS) Enable **Display HDR** to use Apple EDR output. EDR and HDR badges appear in the top-right corner. Includes PQ (ST.2084) decode with Reinhard extended tone-mapping, luminance white point, and luminance scale controls. ## Keyboard Shortcuts | macOS | Windows | Action | | ------------- | ------------- | --------------------- | | Mouse wheel | Mouse wheel | Zoom in/out | | Space + drag | Space + drag | Pan | | Middle-click | Middle-click | Reset zoom | | Alt (hold) | Alt (hold) | Show colour picker | | Shift + Click | Shift + Click | Copy HEX to clipboard | | Ctrl + Click | Ctrl + Click | Add as global target | ## StreamDeck / Action Editor | Action | Description | | --------------------------- | ------------------------------------- | | **SourceTogglePeaking** | Toggle Focus Peaking | | **SourceTogglePeakingLuma** | Toggle Focus Peaking + switch to Luma | | **ClearAllPins** | Remove all colour pins | | **ToggleLoupe** | Toggle loupe magnifier | ## Related * [Focus Peaking (Live Pack)](/nobe-omniscope/live-pack-add-on/focus-peaking.md) * [Overlays](/nobe-omniscope/features/overlays.md) * [Snapshots](/nobe-omniscope/features/snapshots.md) * [Global Targets](/nobe-omniscope/features/global-targets.md) * [Crop](/nobe-omniscope/features/crop.md) * [Data Analyser (QC)](/nobe-omniscope/qc/data-analyser.md) * [Blanking Detection](/nobe-omniscope/qc/blanking-detection.md) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.timeinpixels.com/nobe-omniscope/scopes/source-signal.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.