Membrane RTMP Plugin

This package provides RTMP server which receives an RTMP stream from a client and an element for streaming to an RTMP server. It is a part of Membrane Multimedia Framework.

Installation

The package can be installed by adding membrane_rtmp_plugin to your list of dependencies in mix.exs:

def deps do
  [
	  {:membrane_rtmp_plugin, "~> 0.22.1"}
  ]
end

The precompiled builds of the ffmpeg will be pulled and linked automatically. However, should there be any problems, consider installing it manually.

Manual instalation of dependencies

macOS

brew install ffmpeg

Ubuntu

sudo apt-get install ffmpeg

Arch / Manjaro

pacman -S ffmpeg

SourceBin

Requires a socket, which has been connected to the client. It receives RTMP stream, demuxes it and outputs H264 video and AAC audio.

Client

After establishing connection with server it waits to receive video and audio streams. Once both streams are received they are streamed to the server. Currently only the following codecs are supported:

• H264 for video
• AAC for audio

TCP Server

It's a simple implementation of tcp server. It opens a tcp port and listens for incoming connections. For each new connection, a user-provided function is executed.

Prerequisites

In order to successfully build and install the plugin, you need to have ffmpeg == 4.4 installed on your system

Usage

RTMP receiver

Server-side example, in which Membrane will act as an RTMP server and receive the stream, can be found under examples/source.exs. Run it with:

elixir examples/source.exs

When the server is ready you can connect to it with RTMP. If you just want to test it, you can use FFmpeg:

ffmpeg -re -i test/fixtures/testsrc.flv -f flv -c:v copy -c:a copy rtmp://localhost:5000

Streaming with RTMP

Streaming implementation example is provided with the following examples/sink.exs. Run it with:

elixir examples/sink.exs

If you are interested in streaming only a single track. e.g. video, use examples/sink_video.exs instead:

elixir examples/sink_video.exs

It will connect to RTMP server provided via URL and stream H264 video and AAC audio. RTMP server that will receive this stream can be launched with ffmpeg by running the following commands:

ffmpeg -y -listen 1 -f flv -i rtmp://localhost:1935 -c copy dest.flv

It will receive stream and once streaming is completed dump it to .flv file. If you are using the command above, please remember to run it before the streaming script.

Copyright and License

Copyright 2021, Software Mansion

Licensed under the Apache License, Version 2.0