I think this issue was that we missed the gstreamer1.0-packagekit in the base install. I'm fixing that, then let's see.
** Changed in: gnome-software (Ubuntu) Status: Confirmed => Invalid ** Also affects: ubuntu-meta (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-software in Ubuntu. https://bugs.launchpad.net/bugs/1712979 Title: Installation of missing plugins/codecs fails or is gstreamer1.0-packagekit what's needed? Status in GNOME Software: Confirmed Status in gnome-software package in Ubuntu: Invalid Status in totem package in Ubuntu: Invalid Status in ubuntu-meta package in Ubuntu: Confirmed Bug description: Test case: Fresh install Try to play any file requiring one or more gst plugins What happens: pop up informs plugin(s) missing, offers to 'find in software' Clicking on that option fails Ex. totem /home/doug/Videos/bbb_sunflower_1080p_30fps_normal.mp4 ** Message: Missing plugin: gstreamer|1.0|totem|MPEG-1 Layer 3 (MP3) decoder|decoder-audio/mpeg, mpegversion=(int)1, mpegaudioversion=(int)1, layer=(int)3 (MPEG-1 Layer 3 (MP3) decoder) ** Message: Missing plugin: gstreamer|1.0|totem|AC-3 (ATSC A/52) decoder|decoder-audio/x-ac3 (AC-3 (ATSC A/52) decoder) ** Message: Missing plugin: gstreamer|1.0|totem|H.264 (High Profile) decoder|decoder-video/x-h264, level=(string)4.1, profile=(string)high (H.264 (High Profile) decoder) ** Message: Automatic missing codec installation not supported (helper script missing) ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: totem 3.25.90.1-0ubuntu2 ProcVersionSignature: Ubuntu 4.12.0-11.12-generic 4.12.5 Uname: Linux 4.12.0-11-generic x86_64 NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia ApportVersion: 2.20.6-0ubuntu7 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Fri Aug 25 01:51:47 2017 InstallationDate: Installed on 2017-08-20 (4 days ago) InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170818) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: totem UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-software/+bug/1712979/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp