It can be difficult to use command line, it will be amzing if SMPlayer integrate natively this amazing software to stream videos : https://github.com/streamlink/streamlink
quick look it supports named pipes, local http server or directly passing stream source url? at least one of those will work with smplayer out of the box
It can be difficult to use command line, it will be amzing if SMPlayer integrate natively this amazing software to stream videos : https://github.com/streamlink/streamlink