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# FAQ
## If nobody watches a video, is it seeded?
Yes, the origin server always seeds videos uploaded on it through [Webseed](http://www.bittorrent.org/beps/bep_0019.html).
## What is WebSeed?
It is a BitTorrent extension that allow a server to seed a file through HTTP. It just need to serve statically a file, and then the clients will request chunks with a Content-Range HTTP header.
## If a client requests each chunk of a video through HTTP, the server be overloaded!
Not really. Reverse proxies like Nginx handle very well requests of static files. In my tests it can send chunks at 10MB/s without consuming more than 5% of CPU on a very small VPS.
## An index of all videos of servers you follow won't be too large for small servers?
No, 1000000 videos will represent around 2GB on PostgreSQL. It is acceptable for a video platform.
## What kind of videos can I upload?
WEBM, MP4 or OGV videos.
## I want to change my host or move to HTTPS, how can I do that?
If you already have followers, you can't.
If you don't: update your configuration and run `NODE_ENV=production npm run update-host` to update the torrent files.
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