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FAQ.md

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+# FAQ
+
+## If nobody watch 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 proxy 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 the network 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?
+
+If you already have friends you need to quit them.
+Then, update your configuration and run `NODE_ENV=production npm run update-host` to update the torrent files.