Description

This set of GStreamer plugins may be needed by some games and multimedia applications to play audio and/or video content. 
See Missing libgstreamer1 library for more details.

Resolution

On CrossOver 17 and greater, the simplest solution to fix this issue is to run:

/path/to/cxoffice/bin/cxfix missinggstreamer1bad missinggstreamer1bad.amd64

Or add --show-all to see how CrossOver would fix it on your platform and others.

Alternatively you may try one of the commands below.

• For 32-bit Windows applications 
  32-bit Arch Linux : pacman -Syu gst-plugins-bad 
  Debian (1) : apt-get install gstreamer1.0-plugins-bad:i386 
  Fedora : yum install gstreamer1-plugins-bad-free.i686 gstreamer1-plugins-bad-free.x86_64 
  openSUSE : zypper install gstreamer-plugins-bad-32bit 
  Ubuntu (1) : apt-get install gstreamer1.0-plugins-bad-faad:i386 gstreamer1.0-plugins-bad-videoparsers:i386
• For 64-bit Windows applications 
  Arch Linux : pacman -Syu gst-plugins-bad 
  Debian (1) : apt-get install gstreamer1.0-plugins-bad:amd64 
  Fedora : yum install gstreamer1-plugins-bad-free.x86_64 
  openSUSE : zypper install gstreamer-plugins-bad

Notes:

• cxfix --show-all may have more up-to-date fixes.
• The commands usually also apply to derived distributions. So for instance a fix for Debian is typically also applicable to Ubuntu, Linux Mint, Deepin and Pop! OS. Similarly a fix for Fedora likely also works on Red Hat Enterprise Linux, CentOS, etc.
• (1) Before Debian 11 the package containing the 32-bit plugins is incompatible with the 64-bit one. This also impacts the derived distributions such as Ubuntu, Pop OS!, etc. On affected distributions you will have to choose between the 32-bit plugins (for 32-bit Windows applications) and the 64-bit plugins (for your Linux applications such as Firefox).