Replace the external StreamElements feed with NATIVE YouTube events per the creator's 2026-09-23 question. Chat parity half: - YouTubeChatService decodes ALL SIX liveChat/messages event types into ChatMessage.Kind (superChat/superSticker/newSponsor/membershipGifting/ giftMembershipReceived/memberMilestoneChat) — the four formerly-empty overlay rows are real now — and re-arms its one-shot poll on the server's pollingIntervalMillis (streamList connection semantics; clamp 1000-6000ms, maxResults=2000). ParsePage internal static seam + ChatPage record for deterministic tests; optional HttpClient ctor seam kept; InjectSimulatedMessage (TASK 41) preserved. Alerts half (creator rulings: one celebration zone, six UNIQUE animations, no menus/polls, sub mention = chat row only, NO viewer count): - New SourceType.AlertBox 'Stream Alerts' (one per layout, CanAddAlerts gate mirroring chat; idle = transparent). - AlertRenderer: six distinct branded animations (SuperChat slide-up/shine/ count-up, SuperSticker scale-pop, NewMember drop-in/flash, MemberGift slide-left/ chip-fan, GiftReceived confetti, MemberMilestone rise/growth-bar), every card drawing the 'made with LlamaCasty!' brand line. - AlertOverlayLayer: true component (Commit-G pattern) — queue (cap 10, drop tail never stall), 33ms UI ticker, cache-first RenderFrame + UpdatePreview, Advance(double) as the deterministic test clock; ChatEventKind.None rows never enqueue. - Wired: resolver RenderAlertBox, _alertLayer ctor + dispose, LoadLayout previews, Add menu item (Controls/LeftPanel.xaml), TestSessionViewModel sims tagged (member->NewMember, superchat->SuperChat). Good Dog ONE integration test: AlertLayerTests (RealApp STA, real WPF raster) — ParsePage classifies all six kinds + cadence fields; None rows enqueue nothing; six events play pairwise-distinct moving frames then drain to null. Gate: clean build 0 warnings; full suite 316/317, the one failure (LayerReorderPersistenceTests.RealMouseDrag) repros on the clean tree — the known environmental class (real-mouse-drag no-ops with a game/fullscreen window focused). References (OBS/overlay ecosystem): - streamList semantics: https://developers.google.com/youtube/v3/live/docs/liveChatMessages/streamList - OBS alert-box pattern (designated celebration zone, idle transparent): creator-chosen model
ytLlive
A creator-proof live-streaming and recording app for YouTube — native Windows (C# / WPF / .NET 8).
Screenshot
Design Principle
This software is so intuitive that even the most right-brained person can easily intuit and use it.
Every feature is measured against this. One-click go-live, sane YouTube defaults, visual scene building, and no dead ends — every action has a visible outcome.
Why ytLlive
OBS treats YouTube as an afterthought; SLOBS is Twitch-first with YouTube bolted on. ytLlive is designed and dedicated to YouTube livestreaming and recording, and to YouTube's specific quirks.
Account Assumption
ytLlive assumes you already have a YouTube creator account — connecting uses "Sign in with Google" to link that existing account. ytLlive does not create accounts. If you don't have a YouTube channel yet, set one up on YouTube first, then connect it here.
Audio Assumption
ytLlive uses your default microphone and desktop/game output — it never hunts for a device or contends for one. It assumes your audio is already configured and working (default input and output set, not hijacked by another app). Audio issues are a Windows/device matter outside ytLlive's scope: we don't debug, detect, or try to fix them. If it doesn't sound right, fix the system's audio settings first — it's on the OS, not on us.
Run
dotnet build # Windows only — WPF
dotnet run
Version Roadmap
v1 is the finished product (creator ruling, 2026-09-01 — there are no v1.x releases).
Everything still queueing lands in v1; anything not on the feature list is on the closed
"Out of product — permanently" list in TASKS.md — read that page before asking for a feature.
What v1 ships: the five-scene director's control surface, webcam + screen capture, media + web + text sources, chat on-stream, the social bar, mic/desktop audio with auto-duck and TRAX, local recording, variable quality tiers with auto step-down, one-click go-live + scheduling, stream resilience (auto-reconnect inside YouTube's grace, one-click back on air), built-in monetization awareness (reward capture, session reports, YPP journey tracker), Alerts — all free and ungated; the one-time license only removes the branding flash.
Structure
| Path | Role |
|---|---|
Models/ |
Scene, Source, WebcamSceneConfig, SceneElement, SceneCatalog, QualityOption, StreamConfig/Health, chat, Socials, BroadcastMetadata, Music, MicStatus |
ViewModels/ |
MainViewModel (partial classes per area) + dialogs: GoLive, CameraPicker, MicPicker, HotkeyConfig, Socials, LiveBroadcastForm |
Services/ |
YouTube (OAuth, streams/broadcasts, chat polling), LayoutStore (SQLite), capture (camera/screen-capture/media-file via FFmpeg), SceneCompositor + FramePump, FFmpeg encoder + RTMP, audio pipeline (WASAPI loopback + mic, mixer, filters, ducker, limiter, TRAX), SocialValidator, notifications, hotkeys, SceneGraph, ChatOverlayLayer |
Helpers/ |
ViewModelBase, RelayCommand, ImageCache, AppLog, TokenStore (DPAPI), OAuthCredentials, converters |
Themes/ |
Controls.xaml — the dark-theme control styles, merged once in App.xaml |
MainWindow.xaml |
Dark-theme control surface: thumbnails + central preview, two-state left panel (layers/properties ↔ live chat), top bar, footer |
Distribution.md |
GA-time plan: signing, installer, EULA, hardening — executed as TASK 36 |
Docs (memory map)
schema.md defines the conventions; ai.md is the AI/session guide;
TASKS.md is the task queue. Each code directory carries an index.md.

