Web Page (Chromium, Windows, WebGL)

Renders a web page with WebGL/3D content into Composer using an embedded Chromium browser, on Windows. Useful for live data overlays, animated lower-thirds and tickers, three-dimensional graphics or motion graphics templates, scoreboard widgets backed by an HTTP API, or any HTML/JS scene that needs hardware-accelerated rendering. Supports plain HTTP/HTTPS URLs and local HTML files (resolved against the project's media search paths). The page can post messages back via a JavaScript callback, optionally wait for a load-finalized signal before going live, and reload itself automatically on errors.

Web Page (Chromium, Windows, WebGL) - Settings

Property	Description
`Show advanced options`	Reveal seldom-used properties in the editor. [default=false]. Turn on to expose advanced/optional fields hidden from the default view.
`AutoStart`	Start rendering the page automatically when the project is loaded. [default=true]. Turn off if you want to start the renderer manually with `StartCommand` or from a script.
`Url`	URL of the page to render. Accepts `http://` and `https://` URLs as well as local HTML files (absolute, `file://`, or relative paths resolved against the project's media search paths). Setting this while the renderer is running triggers a load of the new URL; setting it to an empty string clears the page to about:blank.
`Reload page url`	Reload the current `WebPageRendererUrl` from scratch. Useful when the page content has changed on the server, or to recover from a stuck state.
`Cef renderer load state`	Current load state of the embedded browser (read-only). Idle, Loading, WaitingForLoadFinalizer, Loaded or ErrorLoading. Read this from a script to wait until the page is fully ready before triggering downstream actions.

Configuration

Configuration — output dimensions and error/diagnostics behaviour for the renderer.

Property	Description
`Renderer width`	Width of the rendered page output, in pixels. [min=32, max=4096, default=1024]. Match the size your page is designed for to avoid scaling. Locked while the renderer is running.
`Renderer height`	Height of the rendered page output, in pixels. [min=32, max=4096, default=360]. Match the size your page is designed for to avoid scaling. Locked while the renderer is running.
`Auto reload page on error`	(advanced) Reload the page automatically if it fails to load or hits an error. [default=false]. Useful for unattended scenes where transient network issues should not leave a blank graphic on screen.
`Enable web page console logging`	(advanced) Forward `console.log` messages from the page to the Composer log. [default=false]. Turn on while developing or debugging a page; turn off in production to keep logs quiet.

Commands

Commands — start and stop the embedded page renderer.

Property	Description
`Start page rendering`	Start the embedded browser and begin rendering the page at `WebPageRendererUrl`. `Width` and `Height` become locked while the renderer is running.
`Stop page rendering`	Stop the embedded browser and release its resources. `Width` and `Height` become editable again.

Performance and properties

Performance and properties — runtime statistics about the page renderer.

Property	Description
`Video queue size`	Number of rendered frames waiting in the output queue (read-only). Steady low values indicate a healthy renderer; growing values mean the page produces frames faster than they are consumed.
`Page render performance`	Average time taken to render one frame from the page, formatted as text in milliseconds (read-only). Useful for spotting heavy pages — values that approach the frame interval indicate the page is too slow to render in real time.

Inherits from: AbstractInput, AbstractAudioProcessing, AbstractAudioMetering.

Shared input properties

Every input — regardless of source type — exposes the following property groups. They are surfaced in the property panel only when Show advanced options is enabled on the input.

Icon

Icon text — short text shown on the input's icon in the Inputs list. Useful as a quick visual label (channel number, mic name, camera position) to tell otherwise-similar inputs apart at a glance. Empty by default; has no effect on rendering or routing.

Audio mixer

Hide in audio mixer — when on, hides the input from the audio mixer view without disabling its audio. Useful for de-cluttering the mixer while keeping the audio routed (e.g. fixed background music, ambient beds, pre-aligned playout). [default=false]

Render Options

Invisible (Do not render in scene) — when on, the input is skipped during rendering and produces no picture on any layer or scene. Audio routing is unaffected. Toggle from a script for cued-in / cued-out behaviour during a show. [default=false]
Do not render input — disables the input's internal render entirely (no decode or capture work is done). Stronger than Invisible: that one renders but doesn't display; this one stops the input from doing any work at all. Useful for reducing CPU / network load on heavy sources (e.g. high-bitrate RTMP / SRT streams, large media files) when the input is temporarily not needed. Audio meters are cleared while disabled. [default=false]
Do not render input controller — chooses what drives the Do not render input flag. Let Composer decide (the default) hands control to the project-level Render Tuning optimiser, which automatically pauses inputs that aren't used by any active scene. Manual Configuration ignores Render Tuning and lets the Do not render input toggle control the flag directly — use this to keep a network source warm even when it's currently off-air, or to take a heavy input down by hand regardless of scene activity. [default=Let Composer decide]

Optional TAGS

TAGS — one or more free-form tag words used to classify this input (typically space- or comma-separated). Picked up by Composer's Smart Search to filter or find inputs by category — e.g. camera, music, interview, sponsor. Has no effect on rendering.

Audio configuration and processing options

For inputs capable of processing audio, additional audio configuration and processing options are available through the audio mixer and the Channel Strip Inspector.

Audio mixer — monitor levels, adjust gain and pan, mute / solo inputs, and configure auxiliary sends to Audio Channel Strip submix buses, all from a centralised mixer-style interface.
Channel Strip Inspector — advanced per-strip audio processing for the selected input:
- Input trim, stereo remapping, and audio delay
- Channel mapping (8-channel mode unlocks the full MAPPING tab)
- Gate
- Low-cut filter
- Equaliser (5-band parametric)
- Compressor
- Sidechain ducking (a second compressor whose gain reduction is driven by another input's level — e.g. dipping music under a voice-over)
- Limiter

For the full audio signal flow, see Audio processing workflow.