pcslookout
Lifer
Is there any difference when coming to streaming video ? Is one better than the other?
First, are you talking about streaming over the internet, or streaming over your LAN from a NAS or media server device?
Second, UPnP is a protocol for opening ports on internet-facing routers, and is not generally used for streaming. (Stream travels from internet to device, after device opens connect to internet.) SMB/CIFS is used for Windows' file-sharing on a NAS.
Most streaming apps use DLNA, I believe, and neither one of the above, although you can stream using windows file-sharing from a NAS, if you just double-click on a media file after mapping a drive letter, and playing the media locally, while pulling it over your LAN from the NAS. In that case, your media player has to handle the buffering.
You can't compare them since they have different primary functions. uPNP deals with ports. DLNA is a media sharing standard. SMB is a folder sharing standard. SMB is primarily for all types of files.
What issue are you having or hope to improve?