What I Learned Tracking 5 Realtime Moderator Signals in a Node.js Voice Lobby
Short answer: for realtime moderator disconnects in a gaming voice lobby, correlate observability signals across transport, session ownership, and f…
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Audio works, video is black: debugging a layered WebRTC SFU in Go
Audio connects instantly, the viewer hears everything, and the video tile stays black. The publisher side looks fine. ReplaceTrack returns nil , whi…
Benchmarking Voice AI for Engineering Screening: How We Achieved 94% Correlation with Senior Human Interviewers
When automated hiring platforms claim "expert-level candidate evaluation," engineering leaders remain skeptical. LLM-based evaluators are notoriousl…
EP05: How Simulcast works and what it's for
Episode 5 of 20 in the **PPCDN Low-Latency Live Streaming Course * — building a self-hosted, low-latency live-streaming CDN from protocols to global…
EP04: Transport showdown — RTMP / SRT / WHIP
Episode 4 of 20 in the **PPCDN Low-Latency Live Streaming Course * — building a self-hosted, low-latency live-streaming CDN from protocols to global…
WebRTC vs HLS for live streaming: latency, interaction and when to use each
From the Streaming CDN team. The original, kept up to date, is at streaming-cdn.ewin888.com/guides/webrtc-vs-hls-live-streaming-latency . HLS and DA…
Native incoming calls in React Native: CallKit on iOS, full-screen calls on Android
From the Streaming CDN team. The original, kept up to date, is at streaming-cdn.ewin888.com/guides/react-native-incoming-call-screen . A calling app…
Go live from OBS to the browser in under a second with WHIP
From the Streaming CDN team. The original, kept up to date, is at streaming-cdn.ewin888.com/guides/obs-whip-webrtc-live-streaming . WHIP (WebRTC-HTT…
WebRTC Voice Lobby Telemetry: Setting Replay Boundaries for Disconnected Players
Short answer: replay connection and delivery metadata, not recorded voice, and stop replay at the point where a player could mistake an old event fo…
Как я писал расшифровщик записей, но в итоге получил бота для Яндекс.Телемост, с функциями которые даже не снились
Как расшифровщик созвонов на Go превратился в бота для Яндекс.Телемоста: сам заходит в звонок, пишет, ведёт заметки ИИ и принимает дозвон с телефона…
I built a chat app solo — rooms, voice/video calls, E2EE, and in-room games
I didn't want to build another messenger. There are plenty. What I wanted was a place where you walk into a room built around a shared interest — mo…
Designing a 12-Seat Voice Room: WebRTC/SFU, Server-Authoritative Coins, and Moderation
Social voice rooms look simple: a grid of 10–12 mic seats, a chat strip, some gift animations. Underneath, they combine three hard problems — real-t…
Building a Zero-Middleman Peer-to-Peer Remote Desktop using WebRTC and Native OS APIs
Abstract Most traditional remote desktop solutions operate on a client-server relay paradigm: every desktop video frame and every mouse movement is…
Как мы вдвоем писали кроссплатформенный мессенджер: Compose Multiplatform, SFU на Go и сжатие трафика
Как силами двух разработчиков создать мессенджер под шесть платформ на Compose Multiplatform и Go. Рассказываем об оптимизации бандла до 10 МБ, разр…
What breaks when you self-host a TURN server (coturn — symptom, cause, fix)
The first article in this series was the traps inside the code. The second was the layer underneath — the candidates that lie, the UDP firewall nobo…
WebRTC works on your laptop. Here is what breaks when you put it on a server.
The first article in this series covered the traps inside the code — the Pion v4 API changes, the SSRC rewrites, the renegotiation timing. This one…
What actually breaks when you build a WebRTC SFU in Go
Every Pion example I found stops at "hello world": two peer connections, one track, it works, the blog post ends. That is the easy 20%. The other 80…
The iOS camera lies for about a tenth of a second, and that is why nobody noticed it
Now, two weeks ago I wrote that the iOS camera track reports 1920 by 1080 while the browser draws portrait, and that you should measure the picture…
Your Browser Found an Address. Now Let's Find a Path.
Part 2 of the WebRTC Blog Series — The Lab In Part 1 , we asked a deceptively simple question: What address does my browser have? We discovered that…
Building a random chat where language doesn't matter: WebRTC, relay as a condition, and live translated captions
The original Omegle proved something for fourteen years: two strangers who would never have met can have a good conversation. It shut down in 2023.…
Realtime Audit Signals for Voice Lobby Fan-Out (and Why Delivery Evidence Matters)
For a gaming voice lobby, the least complex design that still gives operators trustworthy evidence is a small audit stream beside the media path: em…
qrdrop: what 'no server' forces you to build
"No server" sounds like a feature you'd put in a bullet list. It isn't one. It's a constraint, and constraints don't hand you good decisions — they…
The Next Person Should Not Inherit Your Beauty Filter: Build a Reset-Safe Tencent RTC Camera Booth
A shared camera experience at a hackathon, community event, or creator booth has an awkward failure mode: the next participant can inherit the previ…
How to Ship AI in Real-Time Communications: A 7-Stage Adoption Framework for Engineering Teams
How to Ship AI in Real-Time Communications: A 7-Stage Adoption Framework for Engineering Teams AI is rapidly changing how real-time communication pl…
How I Built a Zero-Install, Multi-Gigabyte P2P File Transfer Engine in the Browser with WebRTC & File System Access API
Ever tried sending a 15GB 4K video file or a raw dataset to a teammate sitting at the next desk? The options are surprisingly clunky: Hunt for a phy…
A Practical Framework for Testing AI Voice Agents Before They Hit Production
If you've shipped a conversational AI voice agent, you already know the demo always works. Quiet room, good mic, patient tester. The real test start…
Три плагина для Mattermost за день: как мы закрыли боли мессенджера с помощью Cursor
Очередная история про AI и разработку, но с конкретикой. Mattermost на Team Edition, три ежедневные боли: нельзя нормально ответить на сообщение в к…
Заметки о том, как я писал SFU на Rust (2 часть)
Продолжаем изучать, как устроен SFU изнутри: добавляем simulcast, ice restart и мониторинг сети. Дневник разработки на Rust. Читать далее
How We Solved 360 Video Streaming & Real-Time Uploading for iOS Devices
When building real-time media applications—especially in high-stakes environments like remote exam proctoring—supporting mobile devices comes with a…
Playwright + Chromium: 1 Script Replaces 2 Manual Testers for WebRTC Video Call E2E
If you've ever watched a QA engineer press "call" on one laptop, walk across the room, and press "answer" on a phone before the ringing stops, you a…