Well, movie streaming services are maybe the most expencive to run as they require CDN infrastructure. CDN is server network where films are hosted and from where films are streamed by end users. CDN consist of servers with a lot of webspace and with fast connection, also those servers are spread across the globe: for example, if three different users from Melbourne, London and New York stream same movie in same quality from some top pirate streaming website, they might be connected to three different servers (each of this servers would have fastest speed for corresponding end user). Needless to say, running a full scale CDN for popular movie streaming website is not possible for random enthusiast. So such websites are owned by pirate enterpises which convert seo traffic to money through advertising of services which are impossible to promote using legal channels (primarly illegal gambling operators, but also forex, hyip and another types of scams). You can try to rent CDN api access (or even whitelabel with some codebase), as CDN owners sometimes offer that on blackhat boards. But you should keep in mind that renting CDN/whitelabel is illegal deal paid in cryptocurrency: you have a chance to get a proper service to built your own website and you have a chance to be scammed. What i’ve said above is only related to all-genres libraries. If you have some very limited project (like South Park fansite and only want to stream this show episodes and nothing more) then everything is by far easier.