Membrane Camera Capture Plugin

This plugin can be used to capture video stream from an input device.

It is part of Membrane Multimedia Framework.

Installation

Add the following line to your deps in mix.exs. Run mix deps.get.

	{:membrane_camera_capture_plugin, "~> 0.7.2"}

This package depends on the ffmpeg libraries. The precompiled builds will be pulled and linked automatically. However, should there be any problems, consider installing it manually.

Manual installation of dependencies

Ubuntu

sudo apt-get install ffmpeg

Arch/Manjaro

pacman -S ffmpeg

MacOS

brew install ffmpeg

Sample Usage

This example displays the stream from your camera on the screen:

Logger.configure(level: :info)

Mix.install([
  {:membrane_camera_capture_plugin, "~> 0.7.1"},
  :membrane_h264_ffmpeg_plugin,
  :membrane_ffmpeg_swscale_plugin,
  :membrane_sdl_plugin
])

defmodule Example do
  use Membrane.Pipeline

  @impl true
  def handle_init(_ctx, _options) do
    spec =
      child(Membrane.CameraCapture)
      |> child(%Membrane.FFmpeg.SWScale.PixelFormatConverter{format: :I420})
      |> child(Membrane.SDL.Player)

    {[spec: spec], %{}}
  end
end

Membrane.Pipeline.start_link(Example)

Process.sleep(:infinity)

Testing

To run manual tests, you need to install dependencies:

$ mix deps.get

And run manual (you observe the result and decide whether it works) tests:

$ mix test --include manual

If it runs successfully, you should be able to see video from your camera.

You might be asked to grant access to your camera, as some operating systems require that

In case of the absence of a physical camera, it is necessary to use a virtual camera (e.g. OBS, see how to set up the virtual camera in OBS)

Copyright and License

Copyright 2022, Software Mansion

Licensed under the Apache License, Version 2.0