Vivoh WebTransport

Overview

Vivoh WebTransport is a high-performance system for broadcasting MPEG-TS video with low latency and no buffering. It is a relay for other Vivoh WebTransport servers, enabling massively scalable broadcasts through multi-tier pub/sub distribution.

Quick Start

For users with an existing server and SSL certificates:

1. Start the server:

   # Linux
   ./wtmpeg --cert fullchain.pem --key privkey.pem --udp-source 8888
   
   # Windows
   wtmpeg.exe --cert fullchain.pem --key privkey.pem --udp-source 8888

2. Send an H.264/AAC MPEG-TS stream:

   ffmpeg -i input.mp4 -c:v libx264 -c:a aac -f mpegts udp://localhost:8888

   Optional low latency settings: -preset ultrafast -tune zerolatency -g 15 -bf 0

3. Open the WTmpeg player in your browser:

   https://subdomain.yourdomain.com

Installation

1. Platform Requirements
   • Ubuntu Linux VM recommended
   • Windows versions available upon request
2. Download Vivoh WebTransport:
   • Linux: wtmpeg
   • Windows: wtmpeg.exe
3. Domain Setup
   • Create a subdomain for your streaming server
   • Configure DNS A record pointing to your server IP
4. SSL Certificate

   # Install Certbot
   sudo apt install -y certbot
   
   # Get certificates
   sudo certbot certonly --standalone -d subdomain.yourdomain.com
   
   # Copy to working directory
   sudo cp /etc/letsencrypt/live/subdomain.yourdomain.com/fullchain.pem ~/.
   sudo cp /etc/letsencrypt/live/subdomain.yourdomain.com/privkey.pem ~/.
   sudo chown $USER:$USER ~/*.pem

5. Configure Firewall

   # For Ubuntu/Debian (using ufw)
   sudo ufw allow 443/tcp  # HTTP/2 protocol 
   sudo ufw allow 443/udp  # WebTransport protocol
           

Default Ports

• 8888 UDP: Local MPEG-TS input (one per channel)
• 443 TCP: Browser-based player and admin tools
• 443 UDP: WebTransport streaming protocol

Channel Architecture

Each Vivoh WebTransport instance delivers one dedicated streaming channel to 5,000+ viewers

Vivoh WebTransport relay instances replicate channels to scale distribution with low latency delivery

Command Line Options

Usage: wtmpeg [OPTIONS]
Options:
  --cert <FILE>              SSL certificate file path (required)
  --key <FILE>               SSL private key file path (required)
  --addr <ADDR>              Listen address [default: [::]:443]
  --udp-source <PORT>        MPEG-TS input port (origin mode)
  --wt-source <NAME:PORT>    Origin server hostname and port (relay mode)

Advanced Deployment

Remote Contribution Technology Integration

For remote contribution via SRT or RIST:

Learn More

Technology Overview