⚡ RelayCDN Engine v2.4 | HTTP/3 & gRPC Stream Multiplexing Live

Ultra-Low Latency Video Delivery Network for Developers

Deliver smooth 4K/60fps live video, WebRTC data channels, and low-latency HLS/DASH streams at massive scale. Built for platforms handling gigabytes of real-time ingest per second.

120+ Tbps
Global Edge Capacity
<15ms
p99 Ingest Latency
99.999%
SLA Availability
45+
Tier-1 Edge PoPs (EU/RU)
# 1. Initialize high-throughput live stream session
curl -X POST https://video.relaycdn.me/v1/ingest/stream/live \
  -H "Authorization: Bearer rcdn_live_9a87f2e1c3" \
  -H "Content-Type: application/json" \
  -d '{
    "channel_id": "live_ch_nordic_01",
    "protocol": "ll_hls_grpc",
    "transcode_profile": "1080p60_abr",
    "preferred_region": "eu-north-helsinki"
  }'

# Response: Stream ready on Anycast Edge Ingest
{ "stream_id": "str_89ef410", "ingest_endpoint": "https://video.relaycdn.me/v1/stream/ingest/str_89ef410", "edge_playback": "https://video.relaycdn.me/v1/edge/playback/str_89ef410.m3u8" }
package main

import (
    "context"
    "log"
    "github.com/relaycdn/relay-sdk-go/v2"
)

func main() {
    client := relaycdn.NewClient(&relaycdn.Config{
        APIKey:       "rcdn_live_9a87f2e1c3",
        IngestDomain: "video.relaycdn.me",
        Transport:    relaycdn.TransportGRPCStream,
    })

    pipe, err := client.CreateStreamPipe(context.Background(), &relaycdn.PipeOptions{
        Channel:   "live_ch_paris_main",
        LowLatency: true,
    })
    if err != nil { log.Fatal(err) }
    
    log.Printf("Ingest pipeline established via %s", pipe.PoPLocation)
}
import { RelayStreamClient } from '@relaycdn/stream-sdk';

const relay = new RelayStreamClient({
  apiKey: 'rcdn_live_9a87f2e1c3',
  edgeHost: 'video.relaycdn.me',
  multiplexWebSockets: true
});

const session = await relay.connectRealtimeTunnel({
  channel: 'gaming-tournament-eu',
  maxBitrateKbps: 12000
});

session.on('segment-ack', (ack) => {
  console.log(`[RelayCDN Edge] Ingested 1080p frame segment: ${ack.seq} (${ack.latencyMs}ms)`);
});
syntax = "proto3";
package relaycdn.v1.streaming;

service RelayIngestService {
  // High-bandwidth bi-directional binary stream ingestion
  rpc StreamChunkPipe (stream VideoFrameChunk) returns (stream IngestAck);
  rpc GetEdgeHealth (PoPQuery) returns (PoPStatusResponse);
}

message VideoFrameChunk {
  string stream_token = 1;
  uint64 sequence_id  = 2;
  bytes  payload_data = 3;
  int64  pts_timestamp = 4;
}
Architecture Highlights

Engineered for High Throughput & Resilient Ingestion

Whether handling 100 concurrent 4K live broadcasts or petabytes of on-demand chunk delivery, RelayCDN edge nodes optimize every packet.

Sub-Second LL-HLS & DASH

Chunked Transfer Encoding combined with low-latency manifest updates delivers live video to end viewers in under 800ms globally.

RFC 8216bis & CMAF Standard

gRPC & WebSocket Multiplexing

Custom binary streaming protocols bypass traditional TCP head-of-line blocking, allowing sustained gigabit-speed uploads without dropped frames.

HTTP/2 & HTTP/3 Full Support

Anycast Geo-Routing

Clients are automatically directed to the physically closest edge point-of-presence (PoP) across Northern, Western, and Eastern Europe.

BGP Anycast + BBR Congestion Control

Real-Time Edge Transcoding

Hardware-accelerated NVENC & QuickSync edge workers transcode incoming video feeds on the fly into multi-bitrate ladder (1080p, 720p, 480p).

H.264, H.265 (HEVC), AV1

Token Authentication & Geo-Fencing

Cryptographically signed HMAC tokens and geo-restriction policies ensure only authorized players and ingest endpoints can stream data.

Zero Trust Stream Policy

Granular Telemetry & Prometheus Metrics

Monitor bitrate stability, buffer ratios, cache hit rates, and client playback QoS with sub-second resolution.

OpenTelemetry & Grafana Export
Operational Status

Active European & Regional Edge Nodes

Our Tier-3 enterprise datacenter locations provide direct peering with regional ISPs and minimal transit hops.

🇫🇮 Helsinki Edge (FI-01)
Nordic Core Ingest & Transit
7.2 ms
🇫🇷 Paris Edge (FR-02)
Western EU Relay Hub
11.4 ms
🇸🇪 Stockholm Edge (SE-01)
Baltic & Scandinavian Mesh
8.9 ms
🇷🇺 Moscow Edge (RU-01)
EE Direct BGP Peering
4.8 ms
🇩🇪 Frankfurt Edge (DE-01)
DE-CIX Backbone Ingest
14.1 ms
🌐 Global Anycast Gateway
Auto Geo-DNS Failover
3.2 ms

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