title: Which Gstreamer in PyQt5?
body: <p>On Ubuntu 16.04 and 18.04 whenever I'm trying to use <code>QMediaPlayer</code> I'm being prompted with no service. </p>
  
  <pre><code>&gt;&gt;&gt; from PyQt5 import QtMultimedia
  &gt;&gt;&gt; qtm = QtMultimedia.QMediaPlayer()
  defaultServiceProvider::requestService(): no service found for - "org.qt-project.qt.mediaplayer"
  </code></pre>
  
  <p>The Internet suggests installing some Gstreamer packages but it doesn't say which. How can I figure out which package is needed?</p>
  
  <p>It seems that by default Ubuntu comes with <code>Gstreamer1.0</code> and I can run <code>gst-play-1.0 FILEPATH</code>. Any chance that <code>gstreamer-0.10</code> is needed instaed? How can I set reverse the dependency?</p>
  
  <p>Packages which I have installed</p>
  
  <pre><code>notlaptop@laptop$ apt list --installed | grep gstream*    
  gir1.2-gstreamer-1.0/bionic,now 1.14.0-1 amd64 [installed]
  gstreamer1.0-alsa/bionic,now 1.14.0-2ubuntu1 amd64 [installed]
  gstreamer1.0-clutter-3.0/bionic,now 3.0.26-1 amd64 [installed]
  gstreamer1.0-gl/bionic,now 1.14.0-2ubuntu1 amd64 [installed]
  gstreamer1.0-packagekit/bionic,now 1.1.9-1ubuntu2 amd64 [installed]
  gstreamer1.0-plugins-bad/bionic,now 1.14.0-1ubuntu1 amd64 [installed]
  gstreamer1.0-plugins-base/bionic,now 1.14.0-2ubuntu1 amd64 [installed]
  gstreamer1.0-plugins-base-apps/bionic,now 1.14.0-2ubuntu1 amd64 [installed]
  gstreamer1.0-plugins-good/bionic,now 1.14.0-1ubuntu1 amd64 [installed]
  gstreamer1.0-pulseaudio/bionic,now 1.14.0-1ubuntu1 amd64 [installed]
  gstreamer1.0-qt5/bionic,now 1.14.0-1ubuntu1 amd64 [installed]
  gstreamer1.0-tools/bionic,now 1.14.0-1 amd64 [installed]
  gstreamer1.0-x/bionic,now 1.14.0-2ubuntu1 amd64 [installed]
  libgstreamer-gl1.0-0/bionic,now 1.14.0-2ubuntu1 amd64 [installed]
  libgstreamer-opencv1.0-0/bionic,now 1.14.0-1ubuntu1 amd64 [installed,automatic]
  libgstreamer-plugins-bad1.0-0/bionic,now 1.14.0-1ubuntu1 amd64 [installed,automatic]
  libgstreamer-plugins-bad1.0-dev/bionic,now 1.14.0-1ubuntu1 amd64 [installed]
  libgstreamer-plugins-base1.0-0/bionic,now 1.14.0-2ubuntu1 amd64 [installed]
  libgstreamer-plugins-base1.0-dev/bionic,now 1.14.0-2ubuntu1 amd64 [installed]
  libgstreamer-plugins-good1.0-0/bionic,now 1.14.0-1ubuntu1 amd64 [installed]
  libgstreamer-plugins-good1.0-dev/bionic,now 1.14.0-1ubuntu1 amd64 [installed]
  libgstreamer1.0-0/bionic,now 1.14.0-1 amd64 [installed]
  libgstreamer1.0-dev/bionic,now 1.14.0-1 amd64 [installed]
  libreoffice-avmedia-backend-gstreamer/bionic,now 1:6.0.3-0ubuntu1 amd64 [installed]
  </code></pre>