Backgrounds
Volumetric Light
Volumetric Light is an ambient full-canvas background in BeamTracer Audio Visualizers. Shape its response in your browser with settings, audio modulation, presets, and tips.
Volumetric Light is an ambient full-canvas background in the Backgrounds category. Open it from the left visualizer list, start an audio source, and use the settings panel to shape its response.
Open Volumetric Light
Launch the visualizer with its matching left-nav entry selected.
Quick start
- Start the demo track, choose a local audio file, or enable a live input.
- Try a preset or style first, then open the section for the part of the image you want to change.
- On a control with Assign modulation, open the source picker, choose a signal, and watch the slider's live fill.
- Use Reset to Defaults whenever you want to return to the original look.
Audio modulation
On a control with Assign modulation, select the activity icon to open Modulate with. Choose a named source, or choose — None to leave the control unmodulated. After you assign one, its name appears below the slider; select that name to edit the route, or use Clear modulation to remove it. The slider track shows the live signal reaching the control.
| Modulated control | Section | What the route changes |
|---|---|---|
| Path Scale | Main Path | Sets the visual path scale. |
| Group Scale | Main Path | Sets the visual group scale. |
| Group Z | Main Path | Moves the main line artwork toward or away from the camera, and it can be driven by audio. |
| Group Rotation Y | Main Path | Sets the group rotation y of the visible composition. |
| Tube Radius | Main Path | Sets the visible tube radius. |
| Follow Radius | Follow Lines | Sets the visible follow radius. |
| Follow Y Offset | Follow Lines | Sets how far the follow lines wave up and down away from the main path; 0 keeps them on the path. It can be driven by audio. Available when FOLLOW LINES is on. |
| Follow Z Jitter | Follow Lines | Sets how irregular or unpredictable the follow z jitter appears. |
| Dust Size | Dust | Sets the visible dust size. |
| Dust Opacity | Dust | Sets how transparent the dust appears. |
| Dust Speed | Dust | Sets how quickly dust changes or moves. |
| Dust Pulse Speed | Dust | Sets how quickly dust pulse changes or moves. |
| Dust Pulse Amount | Dust | Sets how much the dust size changes during its pulse. |
| Line Metalness | Line Surface | Moves the surface from non-metallic toward metallic. |
| Line Roughness | Line Surface | Moves the surface from polished toward matte. |
| Line Emissive | Line Surface | Sets how brightly the main lines glow on their own; higher values make them look lit from within, and it can be driven by audio. |
| Ambient | Scene Lighting | Controls the scene-wide fill light. |
| Directional | Scene Lighting | Sets the brightness of the directional light that falls across the lines; higher values light them more strongly, and it can be driven by audio. |
| Point Intensity | Point Light | Sets the visible point intensity. |
| Point Distance | Point Light | Sets the spacing between visible elements. |
| Point Decay | Point Light | Sets how long point decay remains visible. |
| Point Sphere Size | Point Light | Sets the visible point sphere size. |
| Bloom Strength | Bloom | Sets the visible bloom strength. |
| Bloom Radius | Bloom | Sets the visible bloom radius. |
| Bloom Threshold | Bloom | Sets the level that must be crossed before bloom appears. |
| Ray Fade | Light Rays | Sets how long ray fade remains visible. |
| Ray Weight | Light Rays | Sets how bright each ray of light looks; higher values make the light shafts stronger and more visible, and it can be driven by audio. |
| Ray Density | Light Rays | Controls how concentrated the visible elements appear. |
| Ray Exposure | Light Rays | Sets the overall rendered brightness. |
| Bokeh Radius | Bokeh | Sets the visible bokeh radius. |
| Bokeh Amount | Bokeh | Sets the strength of the bokeh highlights. |
| Bokeh Contrast | Bokeh | Sets how strongly the blurred glowing circles stand out against the background; higher values make them crisper and more pronounced, and it can be driven by audio. |
| Bokeh Blur X | Bokeh | Softens edges and spreads nearby light or color. |
| Bokeh Blur Y | Bokeh | Softens edges and spreads nearby light or color. |
| Bokeh Outer | Bokeh | Sets how strong the blur is toward the outer edges of the frame; higher values soften the edges more, and it can be driven by audio. |
| Bokeh Center | Bokeh | Sets how strong the blur is at the center of the frame; higher values soften the middle more, and it can be driven by audio. |
| Line Hue Speed | Colors | Sets how quickly line hue changes or moves. |
| Backdrop Hue Speed | Colors | Sets how quickly backdrop hue changes or moves. |
| Follow Hue Speed | Colors | Sets how quickly follow hue changes or moves. |
| Look At X | Look Target | Sets the left-right position of the point the camera stays aimed at. Available when USE LOOK AT is on. |
| Look At Y | Look Target | Sets the up-down position of the point the camera stays aimed at. Available when USE LOOK AT is on. |
| Look At Z | Look Target | Sets the near-far position of the point the camera stays aimed at. Available when USE LOOK AT is on. |
| Mouse Gain | Mouse Look | Sets how strongly the input signal affects mouse. |
| Mouse Lerp | Mouse Look | Sets how quickly the artwork turns to follow your mouse; low values give a slow, smooth turn and high values respond quickly. Available when MOUSE LOOK is on. |
| Mouse Damping | Mouse Look | Balances immediate audio response against steadier motion. |
Settings reference
Presets
| Setting | Available values | What it changes |
|---|---|---|
| Preset | DEFAULT, DEEP SPACE, CYBERNETIC | Chooses the preset mode or style. |
Main Path
| Setting | Available values | What it changes |
|---|---|---|
| Model Source | ORIGINAL DOG, T-REX SKELETON, CRYSTAL JELLYFISH, ZORAG · ANGLER FISH, STEAMPUNK SPIDER, X-12 MECH, FANTASY BUTTERFLY, CUSTOM MODEL | Chooses the model source mode or style. |
| Custom Path (Json Or Glb) | Text | Sets the text used for custom path (json or glb). |
| Path Scale | 0.1–3 | Sets the visual path scale. Use Assign modulation to choose a source. |
| Group Scale | 0.005–0.2 | Sets the visual group scale. Use Assign modulation to choose a source. |
| Group Z | -5–8 | Moves the main line artwork toward or away from the camera, and it can be driven by audio. Use Assign modulation to choose a source. |
| Group Rotation Y | -3.15–3.15 | Sets the group rotation y of the visible composition. Use Assign modulation to choose a source. |
| Path Count | 1–200 | Sets how many visible elements are drawn. |
| Tube Segments | 100–5000 | Sets how many divisions form the visible shape. |
| Tube Radius | 0.001–0.4 | Sets the visible tube radius. Use Assign modulation to choose a source. |
| Tube Sides | 3–20 | Sets how many divisions form the visible shape. |
| Draw Duration | 1s–90s | Sets how many seconds the main lines take to draw themselves in from start to finish; longer values give a slower reveal. |
| Draw Loop | On / Off | Turns draw loop on or off. |
| Draw Delay Spread | 0–1 | Controls how far elements separate from the center or from one another. |
Backdrop
| Setting | Available values | What it changes |
|---|---|---|
| Backdrop Sphere | On / Off | Turns backdrop sphere on or off. |
| Background Opacity | 0–1 | Fades the backdrop sphere and the dark room behind the light beams so they can float over your own footage, while the light paths, dust, and rays stay visible. |
| Backdrop Radius | 5–100 | Sets the visible backdrop radius. |
Follow Lines
| Setting | Available values | What it changes |
|---|---|---|
| Follow Lines | On / Off | Turns follow lines on or off. |
| Follow Count | 1–24 | Sets how many visible elements are drawn. |
| Follow Segments | 50–2500 | Sets how many divisions form the visible shape. |
| Follow Radius | 0.0005–0.08 | Sets the visible follow radius. Use Assign modulation to choose a source. |
| Follow Sides | 3–16 | Sets how many divisions form the visible shape. |
| Follow Y Offset | 0–1 | Sets how far the follow lines wave up and down away from the main path; 0 keeps them on the path. It can be driven by audio. Available when FOLLOW LINES is on. Use Assign modulation to choose a source. |
| Follow Z Jitter | 0–1 | Sets how irregular or unpredictable the follow z jitter appears. Use Assign modulation to choose a source. |
| Follow Draw Duration | 1s–60s | Sets how many seconds the follow lines take to draw themselves in from start to finish; longer values give a slower reveal. Available when FOLLOW LINES is on. |
| Follow Draw Loop | On / Off | Turns follow draw loop on or off. |
| Follow Trim Count | 0–12000 | Sets how many visible elements are drawn. |
Dust
| Setting | Available values | What it changes |
|---|---|---|
| Dust | On / Off | Turns dust on or off. |
| Dust Count | 8–500 | Sets how many visible elements are drawn. |
| Dust Size | 0.01–1 | Sets the visible dust size. Use Assign modulation to choose a source. |
| Dust Size Range | 0–1 | Sets the visible dust size range. |
| Dust Opacity | 0–1 | Sets how transparent the dust appears. Use Assign modulation to choose a source. |
| Dust Speed | 0–0.5 | Sets how quickly dust changes or moves. Use Assign modulation to choose a source. |
| Dust Drift X | 0–0.1 | Sets how fast dust specks drift sideways; 0 stops sideways drift. Available when DUST is on. |
| Dust Drift Y | 0–0.1 | Sets how fast dust specks drift up and down; 0 stops vertical drift. Available when DUST is on. |
| Dust Drift Z | 0–0.2 | Sets how fast dust specks drift toward and away from the camera; 0 stops depth drift. Available when DUST is on. |
| Dust Bound X | 1–20 | Sets how far left and right the dust cloud extends; specks that leave this area reappear on the opposite side. Available when DUST is on. |
| Dust Bound Y Min | -20–20 | Sets the lowest point of the dust cloud; specks that fall below it reappear at the top. Available when DUST is on. |
| Dust Bound Y Max | -20–20 | Sets the highest point of the dust cloud; specks that rise above it reappear at the bottom. Available when DUST is on. |
| Dust Bound Z | 1–20 | Sets how far toward and away from the camera the dust cloud extends; specks that leave this area reappear on the opposite side. Available when DUST is on. |
| Dust Rotation Speed | 0–0.02 | Sets how quickly dust rotation changes or moves. |
| Dust Pulse Speed | 0–8 | Sets how quickly dust pulse changes or moves. Use Assign modulation to choose a source. |
| Dust Pulse Amount | 0–0.05 | Sets how much the dust size changes during its pulse. Use Assign modulation to choose a source. |
Line Surface
| Setting | Available values | What it changes |
|---|---|---|
| Line Metalness | 0–1 | Moves the surface from non-metallic toward metallic. Use Assign modulation to choose a source. |
| Line Roughness | 0–1 | Moves the surface from polished toward matte. Use Assign modulation to choose a source. |
| Line Emissive | 0–2 | Sets how brightly the main lines glow on their own; higher values make them look lit from within, and it can be driven by audio. Use Assign modulation to choose a source. |
| Follow Emissive | 0–2 | Sets how brightly the follow lines glow on their own; higher values make them look lit from within. Available when FOLLOW LINES is on. |
Scene Lighting
| Setting | Available values | What it changes |
|---|---|---|
| Ambient | 0–2 | Controls the scene-wide fill light. Use Assign modulation to choose a source. |
| Directional | 0–3 | Sets the brightness of the directional light that falls across the lines; higher values light them more strongly, and it can be driven by audio. Use Assign modulation to choose a source. |
| Directional X | -20–20 | Moves the directional light left or right. |
| Directional Y | -20–20 | Moves the directional light up or down. |
| Directional Z | -20–20 | Moves the directional light toward or away from the camera. |
Point Light
| Setting | Available values | What it changes |
|---|---|---|
| Point Intensity | 0–8 | Sets the visible point intensity. Use Assign modulation to choose a source. |
| Point Distance | 0–20 | Sets the spacing between visible elements. Use Assign modulation to choose a source. |
| Point Decay | 0–4 | Sets how long point decay remains visible. Use Assign modulation to choose a source. |
| Point Sphere Size | 0.005–0.3 | Sets the visible point sphere size. Use Assign modulation to choose a source. |
Bloom
| Setting | Available values | What it changes |
|---|---|---|
| Bloom Strength | 0–4 | Sets the visible bloom strength. Use Assign modulation to choose a source. |
| Bloom Radius | 0–2 | Sets the visible bloom radius. Use Assign modulation to choose a source. |
| Bloom Threshold | 0–2 | Sets the level that must be crossed before bloom appears. Use Assign modulation to choose a source. |
Light Rays
| Setting | Available values | What it changes |
|---|---|---|
| Ray Fade | 0–2.5 | Sets how long ray fade remains visible. Use Assign modulation to choose a source. |
| Ray Samples | 1–80 | Trades visual detail against performance. |
| Ray Weight | 0–0.05 | Sets how bright each ray of light looks; higher values make the light shafts stronger and more visible, and it can be driven by audio. Use Assign modulation to choose a source. |
| Ray Decay | 0.5–1 | Sets how long ray decay remains visible. |
| Ray Density | 0–2 | Controls how concentrated the visible elements appear. Use Assign modulation to choose a source. |
| Ray Exposure | 0–6 | Sets the overall rendered brightness. Use Assign modulation to choose a source. |
Bokeh
| Setting | Available values | What it changes |
|---|---|---|
| Bokeh Radius | 0–4 | Sets the visible bokeh radius. Use Assign modulation to choose a source. |
| Bokeh Amount | 0–4 | Sets the strength of the bokeh highlights. Use Assign modulation to choose a source. |
| Bokeh Contrast | 0–2 | Sets how strongly the blurred glowing circles stand out against the background; higher values make them crisper and more pronounced, and it can be driven by audio. Use Assign modulation to choose a source. |
| Bokeh Blur X | 0–3 | Softens edges and spreads nearby light or color. Use Assign modulation to choose a source. |
| Bokeh Blur Y | 0–3 | Softens edges and spreads nearby light or color. Use Assign modulation to choose a source. |
| Bokeh Outer | 0–2 | Sets how strong the blur is toward the outer edges of the frame; higher values soften the edges more, and it can be driven by audio. Use Assign modulation to choose a source. |
| Bokeh Center | 0–2 | Sets how strong the blur is at the center of the frame; higher values soften the middle more, and it can be driven by audio. Use Assign modulation to choose a source. |
| Bokeh Samples | 1–120 | Trades visual detail against performance. |
Automatic Focus
| Setting | Available values | What it changes |
|---|---|---|
| Auto Bokeh By Path | On / Off | Turns auto bokeh by path on or off. |
| Auto Min Radius | 0–4 | Sets the visible auto min radius. |
| Auto Base Radius | 0–6 | Sets the visible auto base radius. |
| Auto Radius Slope | 0–30 | Sets the visible auto radius slope. |
| Auto Center Scale | 0–2 | Sets the visual auto center scale. |
| Auto Outer Scale | 0–2 | Sets the visual auto outer scale. |
| Pulse1 Start | 0–1 | Sets the point in the camera path, from 0 at the start to 1 at the end, where the first extra burst of blur begins. Available when AUTO BOKEH BY PATH is on. |
| Pulse1 End | 0–1 | Sets the point in the camera path, from 0 at the start to 1 at the end, where the first extra burst of blur ends. Available when AUTO BOKEH BY PATH is on. |
| Pulse2 Start | 0–1 | Sets the point in the camera path, from 0 at the start to 1 at the end, where the second extra burst of blur begins. Available when AUTO BOKEH BY PATH is on. |
| Pulse2 End | 0–1 | Sets the point in the camera path, from 0 at the start to 1 at the end, where the second extra burst of blur ends. Available when AUTO BOKEH BY PATH is on. |
| Pulse Amplitude | 0–4 | Controls the distance of the motion from its resting position. |
Colors
| Setting | Available values | What it changes |
|---|---|---|
| Line Color | Color | Sets the line color. |
| Line Auto Hue | On / Off | Turns line auto hue on or off. |
| Line Hue Speed | 0–2 | Sets how quickly line hue changes or moves. Use Assign modulation to choose a source. |
| Backdrop Color | Color | Sets the backdrop color. |
| Backdrop Auto Hue | On / Off | Turns backdrop auto hue on or off. |
| Backdrop Hue Speed | 0–2 | Sets how quickly backdrop hue changes or moves. Use Assign modulation to choose a source. |
| Follow Color | Color | Sets the follow color. |
| Follow Auto Hue | On / Off | Turns follow auto hue on or off. |
| Follow Hue Speed | 0–2 | Sets how quickly follow hue changes or moves. Use Assign modulation to choose a source. |
Audio
| Setting | Available values | What it changes |
|---|---|---|
| Master Gain | 0–3 | Sets how strongly the input signal affects master. |
| Bass Intensity | 0–3 | Sets the visible bass intensity. |
| Mid Intensity | 0–3 | Sets the visible mid intensity. |
| High Intensity | 0–3 | Sets the visible high intensity. |
| Smoothing | 0.01–1 | Balances immediate audio response against steadier motion. |
Animation
| Setting | Available values | What it changes |
|---|---|---|
| Light Path Duration | 1s–60s | Sets how many seconds the moving light takes to travel along its path; longer values give a slower, calmer sweep. |
| Light Path Loop | On / Off | Turns light path loop on or off. |
| Light Kf1 X | -15–15 | Sets the left-right position of stop 1 of 4 on the path the moving light travels along. |
| Light Kf1 Y | -15–15 | Sets the up-down position of stop 1 of 4 on the path the moving light travels along. |
| Light Kf1 Z | -15–15 | Sets the near-far position of stop 1 of 4 on the path the moving light travels along. |
| Light Kf2 X | -15–15 | Sets the left-right position of stop 2 of 4 on the path the moving light travels along. |
| Light Kf2 Y | -15–15 | Sets the up-down position of stop 2 of 4 on the path the moving light travels along. |
| Light Kf2 Z | -15–15 | Sets the near-far position of stop 2 of 4 on the path the moving light travels along. |
| Light Kf3 X | -15–15 | Sets the left-right position of stop 3 of 4 on the path the moving light travels along. |
| Light Kf3 Y | -15–15 | Sets the up-down position of stop 3 of 4 on the path the moving light travels along. |
| Light Kf3 Z | -15–15 | Sets the near-far position of stop 3 of 4 on the path the moving light travels along. |
| Light Kf4 X | -15–15 | Sets the left-right position of stop 4 of 4 on the path the moving light travels along. |
| Light Kf4 Y | -15–15 | Sets the up-down position of stop 4 of 4 on the path the moving light travels along. |
| Light Kf4 Z | -15–15 | Sets the near-far position of stop 4 of 4 on the path the moving light travels along. |
Camera
| Setting | Available values | What it changes |
|---|---|---|
| Auto Path | On / Off | Turns auto path on or off. |
| Path Duration | 1s–60s | Sets how many seconds the camera takes to travel along its path when AUTO PATH is on; longer values give a slower, calmer move. |
| Path Loop | On / Off | Turns path loop on or off. |
| Use Look At | On / Off | Turns use look at on or off. |
Look Target
| Setting | Available values | What it changes |
|---|---|---|
| Look At X | -10–10 | Sets the left-right position of the point the camera stays aimed at. Available when USE LOOK AT is on. Use Assign modulation to choose a source. |
| Look At Y | -10–10 | Sets the up-down position of the point the camera stays aimed at. Available when USE LOOK AT is on. Use Assign modulation to choose a source. |
| Look At Z | -10–10 | Sets the near-far position of the point the camera stays aimed at. Available when USE LOOK AT is on. Use Assign modulation to choose a source. |
Mouse Look
| Setting | Available values | What it changes |
|---|---|---|
| Mouse Look | On / Off | Turns mouse look on or off. |
| Mouse Gain | 0–0.02 | Sets how strongly the input signal affects mouse. Use Assign modulation to choose a source. |
| Mouse Lerp | 0–0.05 | Sets how quickly the artwork turns to follow your mouse; low values give a slow, smooth turn and high values respond quickly. Available when MOUSE LOOK is on. Use Assign modulation to choose a source. |
| Mouse Damping | 0.01–1.5 | Balances immediate audio response against steadier motion. Use Assign modulation to choose a source. |
Path Keyframes
| Setting | Available values | What it changes |
|---|---|---|
| Kf1 X | -20–20 | Sets the left-right position of stop 1 of 4 on the path the camera travels along when AUTO PATH is on. |
| Kf1 Y | -20–20 | Sets the up-down position of stop 1 of 4 on the path the camera travels along when AUTO PATH is on. |
| Kf1 Z | -20–20 | Sets the near-far position of stop 1 of 4 on the path the camera travels along when AUTO PATH is on. |
| Kf2 X | -20–20 | Sets the left-right position of stop 2 of 4 on the path the camera travels along when AUTO PATH is on. |
| Kf2 Y | -20–20 | Sets the up-down position of stop 2 of 4 on the path the camera travels along when AUTO PATH is on. |
| Kf2 Z | -20–20 | Sets the near-far position of stop 2 of 4 on the path the camera travels along when AUTO PATH is on. |
| Kf3 X | -20–20 | Sets the left-right position of stop 3 of 4 on the path the camera travels along when AUTO PATH is on. |
| Kf3 Y | -20–20 | Sets the up-down position of stop 3 of 4 on the path the camera travels along when AUTO PATH is on. |
| Kf3 Z | -20–20 | Sets the near-far position of stop 3 of 4 on the path the camera travels along when AUTO PATH is on. |
| Kf4 X | -20–20 | Sets the left-right position of stop 4 of 4 on the path the camera travels along when AUTO PATH is on. |
| Kf4 Y | -20–20 | Sets the up-down position of stop 4 of 4 on the path the camera travels along when AUTO PATH is on. |
| Kf4 Z | -20–20 | Sets the near-far position of stop 4 of 4 on the path the camera travels along when AUTO PATH is on. |
Path Rotation
| Setting | Available values | What it changes |
|---|---|---|
| Rot Y1 | -3.15–3.15 | Sets how far the camera is turned left or right, in radians, at stop 1 of 4 on its path when AUTO PATH is on. |
| Rot Y2 | -3.15–3.15 | Sets how far the camera is turned left or right, in radians, at stop 2 of 4 on its path when AUTO PATH is on. |
| Rot Y3 | -3.15–3.15 | Sets how far the camera is turned left or right, in radians, at stop 3 of 4 on its path when AUTO PATH is on. |
| Rot Y4 | -3.15–3.15 | Sets how far the camera is turned left or right, in radians, at stop 4 of 4 on its path when AUTO PATH is on. |
Some controls appear only after you enable a related mode or style. The settings panel always reflects the options available for the current selection.
Tips for a better audio visualization
- Use lower modulation amounts than you would for a foreground effect so the background supports the mix instead of competing with it.
- Try assigning Bass to Path Scale, then compare Mid, High, and Volume while the demo track plays. The slider's live fill shows the signal reaching that control.