In order to enable codecs with openSUSE Tumbleweed, we need to use a 3rd party repository for potentially patent encumbered packages. The primary option for VLC with codecs is often Packman, these instructions are for installing VLC using the official VLC repository instead.

Open YaST2 Software Repositories

Click Add

Choose, HTTP, click Next

Choose Edit Parts of the URL

Repository Name: VLC

Server Name: download.videolan.org

Directory on Server: /SuSE/Tumbleweed

Go to this URL to verify the GPG Key: https://www.videolan.org/vlc/download-suse.html

Click Trust

You'll return to the YaST2 Software Repositories screen. For me, it named the repository Tumbleweed. If you want to rename it, select the repository and click Edit. I preferred VLC for the name.

With the repository still highlighted, use the Priority input and change it to 89 or a lesser value than other repositories. This will put it at a higher priority.

Once you are finished, click OK

I then just performed sudo zypper ref && sudo zypper dup. I also had some conflicts already, so if it doesn't pick up the VLC repository for those file, you can probably run sudo zypper dup --allow-vendor-change.

Note: If you aren't using Tumbleweed, the videolan.org link above provides information for other versions. I used it on Tumbleweed, so I can't vouch for it on other versions.