Works for me on Bazzite Gnome on Clapper. The only gstreamer packages different between the two are i686 packages, gstreamer1-plugins-good-qt6, and pipewire-gstreamer

I don't have smb shares handy to test with, can someone nail down what we need to install? Or if it should be both? Sounds like it should be both.

can someone nail down what we need to install?

This is handled by gio GStreamer plugin (giosrc element specifically). Should be in gstreamer1-plugins-base. Also GIO needs gvfs and its modules to expand its functionalities. In this case additional required package would be gvfs-smb.

Currently supported URI schemes from giosrc on system can be checked with:

gst-inspect-1.0 -u | grep giosrc

Example output:

giosrc (read, rank 128): file, trash, smb, sftp, ssh, recent, network, mtp, localtest, gphoto2, google-drive, ftps, ftpis, ftp, dns-sd, davs, dav, davs sd, dav sd, computer, burn, archive, afp, afc, admin, resource

If list contains smb you are good to go 😄

Thanks for the help! On a bluefin system I get this:

$ gst-inspect-1.0 -u | grep giosrc
    16:	giosrc (read, rank 128): file, wsdd, trash, smb, sftp, ssh, recent, onedrive, nfs, network, mtp, localtest, gphoto2, google-drive, ftps, ftpis, ftp, dns-sd, davs, dav, davs sd, dav sd, computer, archive, afp, afc, admin, resource

And gvfs-smb is installed so this should be working?

so this should be working?

Yes. The error of OP seems to indicate that he does not have smb on his giosrc URI schemes list.

so this should be working?

Yes. The error of OP seems to indicate that he does not have smb on his giosrc URI schemes list.

I have the same issue but smb is in the list.

giosrc (read, rank 128): file, wsdd, trash, smb, sftp, ssh, recent, onedrive, nfs, network, mtp, localtest, gphoto2, google-drive, ftps, ftpis, ftp, dns-sd, davs, dav, davs sd, dav sd, computer, archive, afp, afc, admin, resource

@Redbox3070

Does removing GStreamer cache file at $HOME/.cache/gstreamer-1.0/registry.x86_64.bin have any effect on this? On either playability or amount of protocols listed by giosrc?

@Redbox3070

Does removing GStreamer cache file at $HOME/.cache/gstreamer-1.0/registry.x86_64.bin have any effect on this? On either playability or amount of protocols listed by giosrc?

Just tried it but it did not work. No changes to the listed protocols

I would say to report this to GStreamer then. The error GStreamer gives is that protocol is missing in the list, but when checked it IS in the list. Clearing cache does not help. Seems like upstream issue to solve.