CF

Low-level WebRTC Protocols

5h 30m 41s
English
Paid
Updated September 2026

Low-level WebRTC Protocols is a 22-lesson 5 hours 30 minutes self-paced course by Tsahi Levent-Levi. Low-level WebRTC Protocols , from Tsahi Levent-Levi, is for developers who already use WebRTC and need to understand what's actually happening on the wire — not just at the API level.

Course facts

Lessons
22
Duration
5 hours 30 minutes
Level
All levels
Language
English
Updated
2026-09-11
Instructor
Tsahi Levent-Levi
Price
Premium

Low-level WebRTC Protocols, from Tsahi Levent-Levi, is for developers who already use WebRTC and need to understand what's actually happening on the wire — not just at the API level.

Who This Is Really For

If you've used WebRTC at a high level but need to debug a stubborn network issue, or you're planning to build your own WebRTC components from scratch, this fills in the layer most WebRTC tutorials skip.

What You'll Learn

  • The network protocols WebRTC relies on, and how their messages are structured
  • How to read and interpret WebRTC traffic at the packet level
  • The tools available for debugging and troubleshooting these protocols directly

Across 22 lessons, the focus stays practical: enough protocol-level detail to actually debug the hard cases.

Who is this course for?

  • Developers who know WebRTC at a high level and have used it a bit
  • Those who want to deepen their understanding of how WebRTC works at its lowest levels at the highest detail
  • When what you need is to debug tough WebRTC bugs that require looking closely at network traffic
  • If you plan on developing your own WebRTC components from scratch

What you will learn

  • What are the network protocols used by WebRTC
  • How these protocols look like on the network – their message structure
  • What tools do you have to debug and troubleshoot these protocols in WebRTC

Who teaches Low-level WebRTC Protocols? Tsahi Levent-Levi

Tsahi Levent-Levi thumbnail

Tsahi Levent-Levi is an Israeli WebRTC consultant and one of the most authoritative independent voices on the WebRTC stack — the browser API and protocol family underneath every modern real-time video / voice / data application (Zoom, Discord, Google Meet, every browser-native voice and video app). He runs BlogGeek.me and the WebRTC paid course catalog at WebRTCcourse.com.

His CourseFlix listing carries three WebRTC courses: Low-level WebRTC Protocols, Higher-level WebRTC Protocols, and Advanced WebRTC Architecture. Together the courses form the most comprehensive WebRTC syllabus available outside the original protocol RFCs.

Material is paid and aimed at engineers building production real-time communication applications. For broader content, see CourseFlix's WebRTC category page.

What lessons are included in Low-level WebRTC Protocols?

This is a demo lesson (10:00 remaining)

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#1: Intro
All Course Lessons (22)
#Lesson TitleDurationAccess
1
Intro Demo
11:29
2
STUN
22:33
3
DTLS 1
23:40
4
DTLS 2
05:45
5
RTP/RTCP 1
35:30
6
RTP/RTCP 2
08:51
7
RTP header extensions 1
10:51
8
RTP header extensions 2
04:20
9
SRTP 1
19:05
10
SRTP 2
06:52
11
Demuxing RTP, STUN and DTLS 1
24:38
12
Demuxing RTP, STUN and DTLS 2
05:50
13
TURN 1
29:45
14
TURN 2
10:49
15
ICE 1
27:34
16
ICE 2
03:36
17
Datachannels 1
15:47
18
Datachannels 2
04:42
19
Integers in wire level protocols
28:29
20
SDP recap
18:30
21
Interactions between the layers
08:13
22
Full stack recap
03:52
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What courses are similar to Low-level WebRTC Protocols?

More courses by Tsahi Levent-Levi

Frequently asked questions

What prerequisites should I have before taking this course?
Before enrolling in this course, it is beneficial to have a foundational understanding of networking concepts and familiarity with real-time communication technologies. A basic grasp of protocol structures and previous exposure to WebRTC at a higher level will also be helpful. The course delves into low-level protocols such as STUN, DTLS, and RTP/RTCP, so prior experience with these or similar protocols can aid in comprehension.
What specific skills will I gain from completing this course?
By completing this course, you will gain the ability to debug challenging network scenarios and understand the low-level protocols of WebRTC, such as STUN, DTLS, RTP/RTCP, and SRTP. You'll also learn how these protocols interact with each other, which can be critical for implementing them independently. Additionally, you'll understand the mechanics of datachannels and the demultiplexing of RTP, STUN, and DTLS.
Who is the target audience for this course?
This course is designed for developers and engineers who want to deepen their understanding of WebRTC protocols at a low level. It is particularly suitable for those who need to debug complex real-time communication issues or are interested in implementing WebRTC protocols themselves. The course is also valuable for those working in fields where real-time communication is essential, such as video conferencing or live streaming services.
How does this course compare in scope to other WebRTC courses?
This course focuses on the low-level aspects of WebRTC protocols, providing detailed insights into STUN, DTLS, RTP/RTCP, and related technologies. Unlike broader WebRTC courses that may cover application-level use and integration, this course is tailored to those seeking a deep technical understanding, including how to debug and implement protocols from scratch. It is ideal for those who want to go beyond the basics and explore the underlying mechanics of WebRTC.
What platforms or tools are specifically covered in this course?
The course covers several fundamental WebRTC protocols, including STUN, DTLS, RTP/RTCP, and TURN. It does not focus on specific software platforms or third-party tools, but rather on the protocols themselves and their implementation. The lessons include detailed discussions on protocol interactions and the demuxing of RTP, STUN, and DTLS, essential for understanding the technology at a foundational level.
What topics are explicitly not covered in this course?
The course does not cover high-level WebRTC application development or integration with specific communication platforms. It also does not delve into user interface design, application frameworks, or end-user experience optimizations. The focus remains strictly on low-level protocol understanding and implementation, which means it doesn't address higher-level API usage or application deployment.
How much time is needed to complete the course?
The course consists of 22 lessons, each designed to build on the previous one. While the total runtime is not specified, the detailed nature of the material suggests that participants should be prepared to spend additional time outside of the lessons for practice and further study. Depending on your background, dedicating several hours a week to review and practice the concepts will help in thoroughly understanding the course content.