these pkgs are installed
ii gstreamer1.0-clutter-3.0:arm64 3.0.27-2 arm64 Clutter PLugin for GStreamer 1.0
ii gstreamer1.0-gl:arm64 1.18.4-2+deb11u1 arm64 GStreamer plugins for GL
ii gstreamer1.0-gtk3:arm64 1.18.4-2+deb11u2 arm64 GStreamer plugin for GTK+3
ii gstreamer1.0-libav:arm64 1.18.4-3 arm64 ffmpeg plugin for GStreamer
ii gstreamer1.0-nice:arm64 0.1.16-1 arm64 ICE library (GStreamer plugin)
ii gstreamer1.0-packagekit 1.2.5-1~pureos2 arm64 GStreamer plugin to install codecs using PackageKit
ii gstreamer1.0-plugins-bad:arm64 1.18.4-3pureos1 arm64 GStreamer plugins from the "bad" set
ii gstreamer1.0-plugins-base:arm64 1.18.4-2+deb11u1 arm64 GStreamer plugins from the "base" set
ii gstreamer1.0-plugins-good:arm64 1.18.4-2+deb11u2 arm64 GStreamer plugins from the "good" set
ii gstreamer1.0-plugins-ugly:arm64 1.18.4-2 arm64 GStreamer plugins from the "ugly" set
ii gstreamer1.0-x:arm64 1.18.4-2+deb11u1 arm64 GStreamer plugins for X11 and Pango
ii libgstreamer1.0-0:arm64 1.18.4-2.1 arm64 Core GStreamer libraries and elements