Ah. I dont have a PS4. I just updated my vita and noticed it has PS3 streaming though. I'm planning on playing castlevania collection and metal gear solid collection. Hopefully i can stream to my vita upstairs without internet. thanks.Only if you use remote play over the Internet.
There are three options to use remote play. You can connect your Vita wirelessly to the PS4 directly. You can connect through a router and the most practical reason for doing this is probably to get extra range. And you can connect over the Internet.
Now I imagine it uses quite a bit of bandwidth because you are essentially streaming video. If you are in the same house as the PS4, it makes no sense to even use the Internet option.
Remote play is not new for the PS3. There are only a few games that support it and I'm not aware of any plans to go back and make more PS3 games compatible. The PS4 is going to have a lot more games supporting remote play.hopefully they'll have it working in a couple weeks or so. theyre probably getting the ps4 games to work with it first.