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Miracast implementation for GNOME
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Benjamin Berg
Benjamin Berg build: Bump version to 0.90.1
This is mostly to introduce some build/installation fixes for downstream
packaging.
Latest commit 731239a Jul 10, 2019

README.md

This is an experimental implementation of Wi-Fi Display (aka Miracast).

The application will stream the selected monitor if the mutter screencast portal is available. If it is unavailable, a fallback to X11 based frame grabbing will happen. As such, it should work fine in almost all setups.

To get audio streaming, you need to change the audio output in pulseaudio to use the created "Network-Displays" sink.

To use it, you will need:

  • openh264 or x264
  • For audio supporting using AAC one of fdkaacenc, faac or avenc_aac
  • NetworkManager version > 1.15.2

Issues

Mutter currently has an issue when streaming from a multi-monitor setup. See https://gitlab.gnome.org/GNOME/mutter/issues/424

Devices

The following devices have been tested:

  • Measy "Miracast Receiver" Model A2W
    • Announces itself as EZMirror/EZCast
    • Only supports uncompressed audio (LPCM) which is not supported yet
  • LG WebOS TV
  • MontoView (Software Revision 2.18.02)
  • MiraScreen

Testing

For testing purposes you can run with NETWORK_DISPLAYS_DUMMY=1 set. In that case, a dummy sink will be provided that allows connecting on localhost using any RTSP capable client to test WFD streaming.

You can connect to rtsp://localhost:7236/wfd1.0 then.

Debugging

Appropriate video/audio encoders will be selected automatically. You can modify the choice by setting the NETWORK_DISPLAYS_H264_ENC and NETWORK_DISPLAYS_AAC_ENC environment variables and specifying the gstreamer element to use (if supported and detected). run with G_MESSAGES_DEBUG=all to see the selection at work during connection establishment.

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