This bug was fixed in the package gst-plugins-bad1.0 - 1.12.2-1ubuntu2
--------------- gst-plugins-bad1.0 (1.12.2-1ubuntu2) artful; urgency=medium
* Prefer native Wayland over X11/Xwayland if both are available. This fixes VA-API initialization failure in Gnome Shell Wayland sessions (LP: #1698287).
-- Daniel van Vugt <email address hidden> Tue, 08 Aug 2017 17:08:09 +0800
This bug was fixed in the package gst-plugins-bad1.0 - 1.12.2-1ubuntu2
---------------
gst-plugins-bad1.0 (1.12.2-1ubuntu2) artful; urgency=medium
* Prefer native Wayland over X11/Xwayland if both are available. This
fixes VA-API initialization failure in Gnome Shell Wayland sessions
(LP: #1698287).
-- Daniel van Vugt <email address hidden> Tue, 08 Aug 2017 17:08:09 +0800