Scaling WebRTC Audio

for Gaming and other Applications

Ross Kukulinski / @rosskukulinski / SpeakIt.io

WebRTC is Peer-to-Peer (usually)

Peer-to-Peer is awesome

Until it isn't

Audio Vocabulary 101

Transcoding
Mixing
Acoustic echo cancelation (AEC)

Fully-Meshed Architecture

Larger Fully-Meshed Architecture

Star Mesh: Endpoint as Mixer

Multi-Star

Multipoint Control Unit (aka 'Media Server')

Larger MCU

Advantages of MCUs

• Offloads processing from endpoints
• Recording / Transcription
• Re-broadcast (podcasts, live gaming events, etc)
• Sound Effects / Text-to-Speech / Music

SpeakIt Architecture

SpeakIt WebSocket Mixing Cluster

SpeakIt PeerConnection Mixing Cluster

External Services

Multicast MCUs

Multi-Datacenter

So, that's cool. Now what?

Analyze your requirements

Roll your own vs Commercial

Open Source vs Off-the-shelf vs Hosted

Thanks!

Ross Kukulinski

ross at SpeakIt.io

@rosskukulinski