Networking Basics for Streaming: TCP, UDP, QUIC, HTTP/3

Unlock the foundations of networking for video streaming! This video is tailor-made for learners, developers, and interviewees who want a clear and practical understanding of how the internet delivers high-quality video, live or on-demand, across the globe.

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What You’ll Learn:

1. The Internet as a Global Delivery System

How the internet moves your streams from server to device, just like a global postal service.

2. TCP vs UDP: Reliable vs Fast Delivery

TCP: Guarantees reliability and order—perfect for VOD and where flawless playback matters.

Three-way handshake, packet ordering, retransmits lost packets, but can cause buffering (head-of-line blocking).

UDP: Prioritizes speed over perfection—ideal for live streaming, gaming, and VoIP.

No formal connection, minor glitches over major pauses.

Quick Reference Table: Reliability, speed, use cases (VOD vs. live streaming, etc.)

3. QUIC: The Future of Streaming

What is QUIC and how it combines UDP’s speed with TCP’s reliability—solving head-of-line blocking and making HTTP/3 possible for robust, modern streaming.

4. HTTP Versions & Streaming

HTTP/1.1: The classic, still widespread but can suffer from bottlenecks.

HTTP/2: Multiplexes requests for faster browsing but is still limited by TCP.

HTTP/3: Uses QUIC for ultra-low latency and resilience—ideal for next-gen streaming, media apps, and real-time communication.

5. HTTPS & Secure Media Delivery

Overview of TLS/SSL handshake, certificate verification, and how HTTPS protects your streams on the internet.

6. Ports, NAT, and Firewalls

How ports connect services, what network address translation means for streaming, and why protocols like WebRTC need extra steps for peer-to-peer connections.

7. Diagnosing and Mitigating Packet Loss

Common streaming problems explained: how to use tools like ping and traceroute to troubleshoot.

How Forward Error Correction (FEC) helps recover lost data—especially in live UDP streams.

8. Real-World Streaming Protocols & Latency

Side-by-side protocol comparison: HLS, DASH, RTMP, SRT, WebRTC—when to use each, and their latency characteristics.

HLS/DASH: HTTP-based, widely supported (5-30s latency)—VOD and live distribution.

RTMP, SRT, WebRTC: Low-latency options for live interaction, high-quality contribution.

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Timestamps:
0:00 – Introduction to Streaming Networking
1:20 – Internet as a Delivery System
2:50 – TCP vs UDP for Streaming
5:00 – QUIC and HTTP/3 (Modern Web Streaming)
7:00 – Secure Media Delivery (TLS/SSL)
8:30 – Ports, NAT, and Firewalls
10:10 – Diagnosing & Fixing Packet Loss
12:30 – Real-World Streaming Protocols Table
14:30 – Tips, Best Practices, and Summary

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Hashtags:
#Streaming #Networking #TCP #UDP #QUIC #HTTP3 #HLS #DASH #RTMP #SRT #WebRTC #PacketLoss #TLS #SSL #OTT #Latency #TechExplained #InterviewPrep #VideoStreaming #DeveloperTips