[packman] mpv smb and ffmpeg3

[Mark Fairbairn]

since a few months back mpv has required ffmpeg support for smb to
play content over an smb network. This was fixed in ffmpeg4 for
tumbleweed.
https://lists.opensuse.org/opensuse-factory/2020-03/msg00145.html[1]
However, Leap 15.2 uses ffmpeg3 which does not have smb support in
place (at least in the opensuse/packman version)
Any chance of getting the fix that was applied to ffmpeg4 backported to
ffmpeg3 for leap 15.2?

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[1] https://lists.opensuse.org/opensuse-factory/2020-03/msg00145.html