gramps
71932b9756
The 240Hz monitor delivery + one-in-flight conversions + naive double-per-pixel DownscaleBgra (~150ms/frame under load) froze the desktop layer 90% of take ty-1742 (6.1 fresh content updates/s, freeze runs to 2.8s; decoded raw-frame audit). The render stat (33-36ms) was real but moot — the capture CONVERSION was the wall, and the one torn frame was a ring slot rewritten under the consumer's read. Reference: WGC delivers at DWM/monitor cadence (https://learn.microsoft.com/en-us/windows/apps/develop/media-authoring-processing/screen-capture) and libyuv row-simple/fixed-point scaling (https://chromium.googlesource.com/libyuv/libyuv/) — the repo's own take-4 rule. - DownscaleBgra: integer 8.8 fixed-point, shift-only-at-the-end (same two-stage math as SceneCompositor.Bilinear). ~150ms -> ~5ms per 2.5K->1080p frame. - 10ms MinConvertInterval: the ~4.2ms 240Hz tail stopped queuing ~150ms of serialized conversion/s; capacity sits just above the 60/s the pump can use. - FrameRingBuffer (depth 8, redLine 4): reuse-DISTANCE ring — a buffer is only rewritten >=4 rents after its last hand-out else fresh-allocated, so a frame a consumer still holds (session.LatestFrame survives conversions, dispatcher preview lags) is never read-while-overwritten. Needs no consumer Release API. - 2s startup.log telemetry: frames/s, conv avg/max ms, skip busy/cadence, ring allocs — the device take is judgeable numerically. Good Dog test: Ring_NoLap_ReusesOnlyAfterRedLineRents. 295/295 green, 0 warnings. C4 (composite Epoch-cached downscale) deferred pending the device re-measure. Local only, no push.
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 subscription 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.