我在 Ubuntu 20.04 LTS 上安装了 GNOME-sushi。最初，当我选择一个视频并按下spacebar时，出现以下错误。
安装gstreamer1.0-plugins-bad和gstreamer1.0-plugins-ugly包后，只播放音频，不播放视频。
以下已安装（使用dpkg -l | grep gstreamer）
ii gir1.2-gstreamer-1.0:amd64 1.16.2-2 amd64 GObject introspection data for the GStreamer library
ii gstreamer1.0-alsa:amd64 1.16.2-4 amd64 GStreamer plugin for ALSA
ii gstreamer1.0-clutter-3.0:amd64 3.0.27-1 amd64 Clutter PLugin for GStreamer 1.0
ii gstreamer1.0-gl:amd64 1.16.2-4 amd64 GStreamer plugins for GL
ii gstreamer1.0-gtk3:amd64 1.16.2-1ubuntu2 amd64 GStreamer plugin for GTK+3
ii gstreamer1.0-packagekit 1.1.13-2ubuntu1 amd64 GStreamer plugin to install codecs using PackageKit
ii gstreamer1.0-plugins-bad:amd64 1.16.2-2.1ubuntu1 amd64 GStreamer plugins from the "bad" set
ii gstreamer1.0-plugins-base:amd64 1.16.2-4 amd64 GStreamer plugins from the "base" set
ii gstreamer1.0-plugins-base-apps 1.16.2-4 amd64 GStreamer helper programs from the "base" set
ii gstreamer1.0-plugins-good:amd64 1.16.2-1ubuntu2 amd64 GStreamer plugins from the "good" set
ii gstreamer1.0-plugins-ugly:amd64 1.16.2-2build1 amd64 GStreamer plugins from the "ugly" set
ii gstreamer1.0-pulseaudio:amd64 1.16.2-1ubuntu2 amd64 GStreamer plugin for PulseAudio
ii gstreamer1.0-tools 1.16.2-2 amd64 Tools for use with GStreamer
ii gstreamer1.0-x:amd64 1.16.2-4 amd64 GStreamer plugins for X11 and Pango
ii libgstreamer-gl1.0-0:amd64 1.16.2-4 amd64 GStreamer GL libraries
ii libgstreamer-plugins-bad1.0-0:amd64 1.16.2-2.1ubuntu1 amd64 GStreamer libraries from the "bad" set
ii libgstreamer-plugins-base1.0-0:amd64 1.16.2-4 amd64 GStreamer libraries from the "base" set
ii libgstreamer-plugins-good1.0-0:amd64 1.16.2-1ubuntu2 amd64 GStreamer development files for libraries from the "good" set
ii libgstreamer1.0-0:amd64 1.16.2-2 amd64 Core GStreamer libraries and elements
如何安装缺少的插件？
