Video from UV4L-server WebRTC to Mediasoup possible?

marklieberman · March 30, 2020, 8:25pm

Hello,

I have a Raspberry Pi 3 with a raspicam/mic/speakers running uv4l-server. UV4L has an integrated WebRTC server with a simple WebSocket signalling protocol that does SDP offer/answer. (I do want 2-way real-time communication with the raspi, before anyone suggests gstreamer or something.)

I would like to somehow get the stream from UV4L into mediasoup. Unfortunately, UV4L is closed source so I cannot integrate mediasoup libraries directly. I was wondering if it would be possible to use parts of mediasoup-client to basically proxy the SDP/ORTP communication and setup a WebRTCTransport connection anyway.

I’m new to mediasoup, so any guidance on whether this is possible or how to begin would be appreciated.

Thank you

ibc · March 30, 2020, 8:38pm

You can use mediasoup-client internal utils in your server to make a SDP<->ORTC “gateway”. This is complex stuff and requires good knowledge of mediasoup, mediasoup-client internals, RTP and SDP. You can look at this project as reference:

github.com

Kurento/mediasoup-demos/blob/master/mediasoup-kurento-filter/server.js

"use strict";

const CONFIG = require("./config");
const Express = require("express");
const Fs = require("fs");
const Https = require("https");
const KurentoClient = require("kurento-client");
const Mediasoup = require("mediasoup");
const MediasoupOrtc = require("mediasoup-client/lib/ortc");
const MediasoupRtpUtils = require("mediasoup-client/lib/handlers/sdp/plainRtpUtils");
const MediasoupSdpUtils = require("mediasoup-client/lib/handlers/sdp/commonUtils");
const SdpTransform = require("sdp-transform");
const SocketServer = require("socket.io");
const Util = require("util");

// ----------------------------------------------------------------------------

// Application state
// =================

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Video from UV4L-server WebRTC to Mediasoup possible?

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