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Under the hood

How Stagefront Works

A browser-native 3D venue. Screenshare as your stage. Spatial audio that responds to where fans stand. Here's the full picture.

The Core Technology

The venue is a browser room

Stagefront shows happen inside Portals — a spatial 3D engine that runs entirely in Chrome with no download, no install, no account. Every Stagefront artist gets a custom Portals room as their permanent stage.

These rooms are real 3D spaces — not video chat grids, not flat stream embeds. Fans enter as avatars and move through the space. The room has a stage, a floor, walls, interactive objects, and a crowd that's physically present.

Venues are auto-generated via the Portals Rooms API when an artist is approved. Every detail — stage layout, lighting, billboard content, spatial audio zones — is configured to the artist's spec.
STAGE SCREEN
Stagefront venue
🎛️ Artist's DAW / Camera / Video
↓ screenshare
Chrome tab (with audio)
↓ feeds into
✦ Stage screen (in-venue)
↓ spatial audio
👥 Fans (louder up close)

Screenshare is the stage

Artists don't stream to a platform. They screenshare into their venue. Whatever is on their Chrome tab — a DAW producing live, a camera, a full visual set — appears on the stage screen inside the 3D room.

The key difference: the audio from the screenshare feeds into the venue's spatial audio system. It's not piped to all fans equally. It behaves like sound in a room — louder near the stage, quieter further back.

Fan experiences it like standing in a venue — walk to the front and the mix hits you. Step to the back and you hear the crowd more than the stage.

Spatial audio that
responds to position

Every sound source in a Portals room has a falloff distance — a start radius (full volume) and an end radius (silence). Between those two points, volume fades linearly.

For a Stagefront show, the stage screen is the primary sound source. Artists can configure the acoustic feel of their venue — a tight club will have a short falloff (you need to be close). A festival stage radiates across the whole field.

Fan communication is layered — artists choose their Show Mode (Broadcast, Community, or Silent) and Stagefront's chat layer sits alongside Portals. Fans can always private-message each other without interrupting the performance. Fan-to-artist DMs go straight to the artist's dashboard inbox.

Loud
Medium
Quiet
Ambient
🎵 Stage

How artists run a show

End-to-end — from sign-up to curtain call.

01
🚀

Sign up and access your dashboard

Create your account and land directly in your full artist dashboard. No applications. No waitlist. No approval gate. Everything is ready from day one.

Your dashboard includes: Venue Builder, 3D Prop Studio, Avatar Studio, AI Presence, Playlist Manager, Show Scheduler, and Analytics.

02
🏗️

Build your venue and creative presence

Use the Venue Builder to configure your Portals 3D room — particle effects, lighting, stage layout. Generate custom 3D props with AI. Set up your avatar. Create AI NPCs that represent you 24/7.

Your venue is a permanent URL. Build it once, use it forever. The 3D Prop Studio generates GLB files ready to drop straight into Portals.

03
🎵

Set up your music and schedule

Build playlists from uploaded tracks or URLs — audio, video, or mixed. Set time-based schedules with day-of-week rules and timezone support. Your venue stays active between shows.

The Playlist Scheduler keeps your venue alive even when you're not performing. Fans who drop in hear the right music at the right time.

04
🔗

Schedule your show and invite fans

Create a show listing — date, time, genre, description, capacity. It auto-generates a public listing page. Share your venue link. Fans RSVP, get a confirmation email, and a reminder 1 hour before showtime.

Your show link is permanent — run it for a one-off set or recurring shows. Fans need zero accounts or downloads to enter.

05
🎤

Screenshare your stage. Perform.

Start screensharing your DAW, your camera, or your visuals directly into the stage screen. Spatial audio does the rest — fans closer to the stage hear you louder.

The screenshare audio feeds into the spatial audio system. It responds exactly like sound in a physical venue. That's not streaming. That's presence.

06
👥

Read the room. React to the crowd.

Watch your fans move through the space in real time. You control the room — choose Broadcast mode (you speak, fans listen), Community mode (open conversation), or Silent mode (private DMs between fans, no voice interruptions). Fans can message each other privately without breaking the performance.

The room is alive. It's not a comment feed. It's a crowd that can actually talk to each other.

Technical specs
Venue engine
Portals (prtls.gitbook.io)
Browser-native 3D spatial rooms. No download, no plugin.
Audio model
Spatial falloff audio
Start/end distance controls per sound source. Configurable per venue.
Performance layer
Chrome screenshare → stage screen
Any Chrome tab: DAW, camera, video player. Full audio + video.
Venue creation
Portals Rooms API
Auto-provisioned from artist profile. JSON room description, custom GLB assets.
Fan entry
Room URL (portals.to/?room=ID)
One click, no account required for basic entry.
Capacity
60–300 per show
Configurable per venue type. More intimate or festival-scale.
3D prop generation
Hunyuan3D-3.1 via Replicate
Image or text → GLB with PBR materials, up to 200K polygons. ~$0.12–0.20/generation.
Avatar spec
Custom GLB — Portals validated
≤15K triangles, 1–3MB, 512px textures, T-pose, ≤1.6m height. URL auto-hosted.
AI NPC engine
Portals AI NPC + AI Space Options
GPT-powered characters. 6 types: Digital Twin, Merch Rep, Stage Manager, Venue Guide, Hype Character, Lore Keeper.
Playlist scheduler
Multi-source + time-based rules
Audio, video, or mixed. Shuffle/loop. Time slots, day-of-week, timezone. Now Playing indicator.
Venue builder
Particle effects + room config
Visual particle system, lighting controls, stage layout — no code.
Interactivity
Portals Interactive Studio
Tasks, triggers, effects. VIP zones, clickable stage objects, leaderboards.
Communication
Broadcast · Community · Silent
Artist sets Show Mode before each show. Fans always get private DMs.
Analytics
RSVP trends + follower history
Per-show RSVP counts, follower growth over time, full show archive.

Ready to get started?

Artist or fan — your stage (or seat) is waiting. No downloads. No gatekeeping.