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Course Outline
Managing Media Devices
1. Managing Browser Permissions via navigator.permissions
- Accessing hardware:
- Webcam
- Microphone
- Optional permissions:
- Geolocation
- Notifications
- Clipboard (read/write)
- Querying permissions and checking status
- Understanding limitations and browser compatibility
2. Reading Media Devices with navigator.mediaDevices
- Enumerating devices
- Managing device changes
3. Ensuring Cross-browser Compatibility
- API implementation:
- navigator.permissions.query()
- navigator.mediaDevices.enumerateDevices()
- getUserMedia()
- Strategies for Safari fallback
4. Media Device Handling
- Device initialization: getUserMedia(constraints)
- Configuring media device constraints
- Starting and stopping media streams
- Handling device changes
5. Recording Devices with MediaRecorder
- Starting and stopping streaming and recording
- Downloading .webm files
- Real-time waveform preview
Optional Add-ons:
- Saving audio in .wav format using ScriptProcessorNode
- Visualizing audio FFT spectrum
- Displaying volume levels in decibels
- Implementing voice recognition with webkitSpeechRecognition
Establishing Peer Connections
1. Signaling Servers
- Options for bidirectional channels:
- WebSocket
- Socket.io
- SignalR
- Defining message structures
- Developing a simplified WebRTC client
- Executing a complete signaling flow
2. Video Chat Implementation via WebRTC
- Architecture: Node.js combined with ws
- WebRTC client setup using RTCPeerConnection
- Conducting local end-to-end testing
Optional Features:
- Call termination (closing connections and stopping media)
- Group calling capabilities (multi-user rooms)
- Simple token-based authentication
3. Screen Sharing
- Utilizing getDisplayMedia()
- Architectural design and configuration options
4. Session Description Protocol (SDP)
- Overview and content details
- Reading and interpreting SDP data
- Managing codecs:
- Audio and Video codecs
- Negotiation and control mechanisms
- Implementing fallback strategies
5. Analyzing WebRTC Statistics with getStats()
- Understanding statistics types
- Interpreting statistical data
- Monitoring live bitrate and jitter via charts
- Strategies for quality adaptation
6. Comprehensive Topic Coverage
- Hands-on use-case
Requirements
This course is designed for frontend and full-stack developers, technical architects, and engineers tasked with building browser-based real-time communication features such as video chat, screen sharing, or audio streaming. Participants are expected to have a working knowledge of JavaScript and web technologies, with optional experience in Node.js and WebSocket-based communication being beneficial.
14 Hours
Testimonials (1)
That every technical lesson came with multiple practical exercises to nail down the concepts.
