Here's my situation. I am going up north for a week with a bunch of kids and staying at a house that does not have internet access. I have all my streaming content/movies on a laptop (about 250GB) for them to watch when they want. Plex is installed on the laptop. My plan is to bring a wireless router with me so that the laptop and the Chromecast can talk to each other through it and stream content to a TV with the Chromecast. The fact that Chromecast requires an internet connection throws a monkey wrench into it.
Glimmer of hope: My phone has the mobile hotspot feature enabled so I can get internet access through it.
However, how do I get the laptop and the Chromecast to talk to each other while the Chromecast is also connected to the internet via the mobile hotspot? As far as I know, the phone cannot act as a wireless router. If it could do that I think the problem would be solved.
Would allowing the laptop to connect to the mobile hotspot and then somehow sharing that connection (essentially turning the laptop into a router) with the Chromecast work? In that situation would the Laptop be able to stream to the Chromecast?