i have this
./playsmb.sh smb://server/share/file.mkv` and i want it to play in mpv as
mpv smb://guest:guest@server/share/file.mkv

this is what i have so far

smb=echo $1 | awk '{gsub("server", "guest:guest@server", $0); print}'
echo ""
echo $smb
echo $1
echo ""
echo "mpv playing"
mpv --hwdec=vaapi --fs $smb