@HCornflower

rtc@meta. Still cheering for @jitsinews and @NVIDIAGFN. Opinions are my own and I have plenty of them.

 Bellevue, WA
Joined October 2013
  • Tweets8K
  • Following449
  • Followers2.2K
276Media
I joined ten years ago for @realtimeconf in PDX which was awesome! It's enough, see you on the other side!
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Philipp Hancke retweeted
Gustavo Garcia@anarchycoOct 19
Weekly Voice and Video AI Update 🎉 👇 The speech-to-speech race is heating up. xAI shipped Grok Voice 3.0, which jumped to #1 on Artificial Analysis' speech-to-speech index. OpenAI answered with GPT-Live-1.1, which adds 13 new voices and better accents, and opened prompt-to-voice to every API customer. Amazon also made Nova 2.5 Sonic generally available on Bedrock, with better reasoning, async tool calling and a 256K context window at the same price as before. And again more news on the video avatars space coming from Tavus with Kiosk mode and Telnyx AI Assistants. Also a trial a voice companion for snowbound seniors coming from ElevenLabs and NTT that looks like a great use case for video avatars in the future. The infrastructure is catching up just as fast. LiveKit Inference now runs cascaded, speech-to-speech and full-duplex models side by side. Turn-taking is still where a lot of the work is. ElevenLabs added turn prediction to its real-time STT, Pipecat shipped user and bot backchannels, and a great webrtcHacks piece shows how leaked echo still tricks agents into hearing turns that never happened. FULL UPDATE IN THE NEWSLETTER LINK BELOW 👇 Have a great week!
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Philipp Hancke retweeted
Chad Hart@chadwallacehartOct 7
Chrome quietly downloads a neural echo estimator. @HCornflower reverse engineers the model, tests it against AEC3, and asks "why don’t other browsers get the weights"? See the latest @webrtcHacks post: webrtchacks.com/chrome-neura…
Two baby monkeys face each other: one holds a microphone and the other wears headphones, with a Chrome AEC3 logo and sound waves between them.

ALT Two baby monkeys face each other: one holds a microphone and the other wears headphones, with a Chrome AEC3 logo and sound waves between them.

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Philipp Hancke retweeted
Justin Uberti
@jubertiOct 7
Updated our Live API/Realtime API documentation to show how to use the new WARP extensions for WebRTC to reduce connection latency to a single RTT, typically well under 100 ms. developers.openai.com/api/do…

WebRTC with WARP | OpenAI API

Learn how to enable WARP optimizations for native and browser-based GPT-Live and Realtime API clients.

developers.openai.com
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Philipp Hancke retweeted
Natalie Silvanovich@natashenkaOct 6
All vendors should have a plan for rapid remediation in the case of active exploitation. Here’s some emergency fix strategies we’ve seen over the years: projectzero.google/2026/10/e…

How to fix a bug in a fix

Project Zero often works with software vendors to remediate the vulnerabilities we report and pro...

projectzero.google
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Philipp Hancke retweeted
webrtcHacks@webrtcHacksOct 6
New post: Google Chrome downloads a new neural AEC while you are not looking @HCornflower reverse engineers the model, tests it against AEC3, and asks why other browsers don't get the weights. webrtchacks.com/chrome-neura…
Two baby monkeys face each other: one holds a microphone and the other wears headphones, with a Chrome AEC3 logo and sound waves between them.

ALT Two baby monkeys face each other: one holds a microphone and the other wears headphones, with a Chrome AEC3 logo and sound waves between them.

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Philipp Hancke retweeted
Gustavo Garcia@anarchycoSep 23
Another post about GPTLive. Even if most of the parts and WebRTC integration had been shared before I liked the prefill and handoff sections in this post.
Alex Xu
@alexxubyteSep 22

How OpenAI Built GPT-Live

Article · @alexxubyte
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Philipp Hancke retweeted
Justin Uberti
@jubertiSep 9
Firefox users sometimes failed to connect to ChatGPT Voice due to a 12-year-old WebRTC implementation issue. This prevented one of our team members from using his favorite browser, so he figured out what was going on and resolved this long-standing bug: bugzilla.mozilla.org/show_bu….

1034964 - Use ICE regular nomination when peer is ICE-Lite

RESOLVED (wmcd) in Core - WebRTC: Networking. Last updated 2026-08-31.

bugzilla.mozilla.org
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Philipp Hancke retweeted
Justin Uberti
@jubertiAug 6
Chrome: developer.chrome.com/origint… Edge: developer.microsoft.com/en-u… The usual OT restrictions apply (pre-standard, wire format may change) but for most apps this should be an easy win.
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Justin Uberti
@jubertiAug 4
Talking with @tsahil tomorrow morning about WARP and the other WebRTC improvements that we made for GPT-Live! linkedin.com/events/builtwit…
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Philipp Hancke retweeted
Justin Uberti
@jubertiAug 3
WARP started out as a ramble session at Bellevue Brewing Co with @HCornflower, and became a complete reworking of the WebRTC setup flow, running the DTLS handshake in parallel with ICE, and collapsing the SCTP handshake entirely. datatracker.ietf.org/doc/dra…

WebRTC Abridged Roundtrip Protocol (WARP)

This document outlines a set of improvements to the WebRTC session setup protocols aimed at significantly reducing connection setup latency. This improved setup mechanism is known as the WebRTC...

datatracker.ietf.org
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Philipp Hancke retweeted
Justin Uberti
@jubertiAug 3
Just posted our technical deep dive on the GPT-Live system, by @zahanm and yours truly.
OpenAI
@OpenAIAug 3
GPT-Live can listen while it speaks. To make that feel natural at ChatGPT scale, we rebuilt the voice stack from client to model. This new architecture keeps audio flowing continuously, so deeper reasoning and tool use don't interrupt the conversation.
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Philipp Hancke retweeted
Nick Sullivan
@grittygrease23 Sep 2018
The more I talk to people about my work at the IETF the more I realize just how poorly understood its processes are outside a niche community. It’s surprising because of how critical the IETF’s work is: they define the standards that make the Internet go (HTTP, TCP, TLS, DNS, …)
Noelle Acheson
@NoelleInMadrid23 Sep 2018
I absolutely have to share this mind-blowing consensus method with you, used by the Internet Engineering Task Force (IETF) (from “The Darkening Web” by Alexander Klimburg). 1/5
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Philipp Hancke retweeted
webrtcHacks@webrtcHacksJul 2
New post: Vector Vibing to speed up Opus encode by 20% - @hcornflower describes how he wired up the AVX2 Opus implementation for speed gains webrtchacks.com/vector-vibin…
🤖 Made with AI
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Philipp Hancke retweeted
webrtcHacks@webrtcHacksJun 2
New post: Vibe-coding #WebRTC by @HCornflower - using AI to tackle long-standing WebRTC issues and ship fixes across libWebRTC, @ChromiumDev , @_pion , and @firefox without handing taste over to the minions webrtchacks.com/webrtc-vibes…

Vibe-coding WebRTC - webrtcHacks

Well, that title is clickbait for Hacker News. The honest title would have been “using AI to tackle long-standing WebRTC issues.” Posts on webrtcHacks are rare these days, and in German we would say...

webrtchacks.com
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Philipp Hancke retweeted
Justin Uberti
@jubertiMay 6
The ICE protocol (RFC 5245) was designed for peer to peer flows, but it’s turned out to be remarkably versatile even in client-server scenarios, allowing for easy authentication, stateless routing, and realtime path selection. Details in our post below: openai.com/index/delivering-…

How OpenAI delivers low-latency voice AI at scale

How OpenAI rebuilt its WebRTC stack to power real-time Voice AI with low latency, global scale, and seamless conversational turn-taking.

openai.com
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Philipp Hancke retweeted
Gustavo Garcia@anarchycoMay 5
Interesting review of the WebRTC infrastructure at OpenAI: ❤️ kudos for avoiding the SFU model, doesn't make any sense for Voice AI IMO 🤷‍♂️ not loving the relay approach even if I get the benefit 💡 ice ufrag routing is not new but smart anyway
OpenAI Developers
@OpenAIDevsMay 5
🎙️ Voice AI only feels natural when conversation keeps pace with speech. Here’s how we rebuilt our WebRTC stack with a thin relay and stateful transceiver to keep real-time media fast for ChatGPT voice, the Realtime API, and more. openai.com/index/delivering-…

How OpenAI delivers low-latency voice AI at scale

How OpenAI rebuilt its WebRTC stack to power real-time Voice AI with low latency, global scale, and seamless conversational turn-taking.

openai.com
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2017.09.03にサービス開始した旧SkyWayですが、昨日を以てサービス終了となりました。2013.12にpeer.jsをベースに最初のSkyWayを立ち上げて、旧SkyWayでもそれを踏襲して13年間やってきましたが、感慨深いものがあります。 new Peer()は無くなりましたが、新SkyWayを引き続きよろしくお願いします！
SkyWay@SkyWayOfficialMay 1
旧SkyWayから、新「SkyWay」へ🚀 昨日、旧バージョンのSkyWayが13年の歴史に幕を閉じました。 多くの開発者のみなさまに支えていただき、 本当にありがとうございました🙏 新SkyWayはこれからも進化を続けます！ skyway.ntt.com/ja #WebRTCSkyWay

SkyWay（スカイウェイ） - NTTドコモビジネスが提供するWebRTCアプリ開発者向けマルチプラットフォームSDK&API

SkyWayはビデオ・音声通話が簡単に実装できる、マルチプラットフォームなSDKです。

skyway.ntt.com
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Blink: Intent to Extend Experiment: Playout Statistics API for WebAudio bit.ly/4hUxLzj
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Philipp Hancke retweeted
webrtcHacks@webrtcHacks7 Oct 2025
New post: Is everyone switching to #MoQ? @HCornflower responds to some FUD about #WebRTC in a recent MoQ launch post with some historical perspective & Chrome Status data webrtchacks.com/is-everyone-…
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Philipp Hancke retweeted
Gustavo Garcia@anarchyco16 Sep 2025
RtcStats is a product now! 🚀 Part of the code started as an internal project at TokBox ~2016, then it was used by Houseparty ~2018 and by StreamYard at ~2022. Even if you don't know millions of users had an RtcStats client at some point🤯 Awesome job @tsahil @HCornflower & co
Tsahi Levent-Levi@tsahil16 Sep 2025
🚀 Exciting news for #WebRTC users! 🤩 If you've ever used webrtc-internals, get ready for rtcStats! 🎉 We just launched rtcStats - an open-source suite and SaaS offering to help you master webrtc-internals files ✨ Free tier available. Check it out at rtcstats.com

rtcStats

Troubleshoot your WebRTC application with ease.

rtcstats.com
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