aiortc

Abstract

aiortc

Authors

Walter Fan

Category

LearningNote

Status

WIP

Updated

2024-08-21

Overview

aiortc is a library for Web Real-Time Communication (WebRTC) and Object Real-Time Communication (ORTC) in Python. It is built on top of asyncio, Python’s standard asynchronous I/O framework.

The API closely follows its Javascript counterpart while using pythonic constructs:

  • promises are replaced by coroutines

  • events are emitted using pyee.EventEmitter

main features

  • SDP generation / parsing

  • Interactive Connectivity Establishment, with half-trickle and mDNS support

  • DTLS key and certificate generation

  • DTLS handshake, encryption / decryption (for SCTP)

  • SRTP keying, encryption and decryption for RTP and RTCP

  • Pure Python SCTP implementation

  • Data Channels

  • Sending and receiving audio (Opus / PCMU / PCMA)

  • Sending and receiving video (VP8 / H.264)

  • Bundling audio / video / data channels

  • RTCP reports, including NACK / PLI to recover from packet loss

Quick start

  • install aiortc

# pip install aiohttp aiortc opencv-python

  • try example

  1. transfer file via data channel

  2. Establishing audio, video and a data channel with a browser. It also performs some image processing on the video frames using OpenCV.

Reference