Comment 4 for bug 1704807

Oh, maybe GStreamer does provide interfaces for enumerating devices abstractly. In that case an app like Totem might still have a say in device selection.

$ gst-inspect-1.0 pulseaudio
Plugin Details:
  Name pulseaudio
  Description PulseAudio plugin library
  Filename /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstpulseaudio.so
  Version 1.12.1
  License LGPL
  Source module gst-plugins-good
  Source release date 2017-06-20
  Binary package GStreamer Good Plugins (Ubuntu)
  Origin URL https://launchpad.net/distros/ubuntu/+source/gst-plugins-good1.0

  pulsesink: PulseAudio Audio Sink
  pulsesrc: PulseAudio Audio Source
  pulsedeviceprovider: PulseAudio Device Provider

  3 features:
  +-- 2 elements
  +-- 1 device providers