Allow vendor change?

Hi, I had this warning message prompting since I installed OpenSuse Leap 15.4 a few days ago, when I try to update by running zypper up:

The following 10 package updates will NOT be installed:
  ffmpeg-4 libavcodec58_134 libavdevice58_13 libavfilter7_110 libavformat58_76 libavresample4_0 libavutil56_70 libpostproc55_9 libswresample3_9 libswscale5_9
Nothing to do.

Following this other thread I run zypper update --allow-vendor-change --dry-run with this result:

Loading repository data...
Reading installed packages...

The following 10 packages are going to be upgraded:
  ffmpeg-4 libavcodec58_134 libavdevice58_13 libavfilter7_110 libavformat58_76 libavresample4_0 libavutil56_70 libpostproc55_9 libswresample3_9 libswscale5_9

The following 10 packages are going to change vendor:
  ffmpeg-4          http://packman.links2linux.de -> SUSE LLC <https://www.suse.com/>
  libavcodec58_134  http://packman.links2linux.de -> SUSE LLC <https://www.suse.com/>
  libavdevice58_13  http://packman.links2linux.de -> SUSE LLC <https://www.suse.com/>
  libavfilter7_110  http://packman.links2linux.de -> SUSE LLC <https://www.suse.com/>
  libavformat58_76  http://packman.links2linux.de -> SUSE LLC <https://www.suse.com/>
  libavresample4_0  http://packman.links2linux.de -> SUSE LLC <https://www.suse.com/>
  libavutil56_70    http://packman.links2linux.de -> SUSE LLC <https://www.suse.com/>
  libpostproc55_9   http://packman.links2linux.de -> SUSE LLC <https://www.suse.com/>
  libswresample3_9  http://packman.links2linux.de -> SUSE LLC <https://www.suse.com/>
  libswscale5_9     http://packman.links2linux.de -> SUSE LLC <https://www.suse.com/>

10 packages to upgrade, 10  to change vendor.
Overall download size: 6.5 MiB. Already cached: 0 B. After the operation, 6.5 MiB will be freed.

I assume this is a safe operation but could anyone please confirm what is the point of “changing vendors” in this context?

Thank you,

If you want to play Video/Audio which has some different licence, stay on the Version of Packman…

As said, that would undo your action to use Packman packages instead of openSUSE OSS packages. I assume that is not what you want.

Thank you, yes I definitely want to play audio/video so I’ll leave this be. Is there a way to make this decision permanent so that I don’t see this message everytime I update?

No chance…

It means only:
There are packages with higher Version/Release in another Repo, that must not mean Updated packages…
ffmpeg from Packman is build with the sources from openSUSE, so same Version, but different Release…

That’s interesting. Well, not a problem since I don’t have to do anything special when updating anyway so I’ll just ignore it. Thanks again for helping out!