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1 | # FAQ | |
2 | ||
3 | ## If nobody watches a video, is it seeded? | |
4 | ||
5 | Yes, the origin server always seeds videos uploaded on it thanks to | |
6 | [Webseed](http://www.bittorrent.org/beps/bep_0019.html). | |
7 | ||
8 | ||
9 | ## What is WebSeed? | |
10 | ||
11 | It is a BitTorrent extension that allows a server to seed a file through HTTP. | |
12 | It just needs to statically serve a file, then the clients will request chunks | |
13 | with a `Content-Range` HTTP header. | |
14 | ||
15 | ||
16 | ## If a client requests each chunk of a video through HTTP, will the server be overloaded? | |
17 | ||
18 | Not really. Reverse proxies like Nginx handle very well requests of static | |
19 | files. In my tests, it can send chunks at 10MB/s without consuming more than 5% | |
20 | of CPU on a very small VPS. | |
21 | ||
22 | ||
23 | ## Will an index of all the videos of servers you follow be too large for small servers? | |
24 | ||
25 | In our benchmarks, 1,000,000 videos takes around 2GB of storage on PostgreSQL. | |
26 | We think it is acceptable for a video platform. | |
27 | ||
28 | ||
29 | ## What codecs can I use for the videos I want to upload? | |
30 | ||
31 | WEBM, MP4 or OGV videos. | |
32 | ||
33 | ||
34 | ## I want to change my host, how can I do that? | |
35 | ||
36 | If you already have followers, you can't. | |
37 | ||
38 | If you don't have any followers, update your configuration and run | |
39 | `NODE_ENV=production npm run update-host` to update the torrent files (they contain your domain name). | |
40 | ||
41 | ||
42 | ## Should I have a big server to run PeerTube? | |
43 | ||
44 | Not really. For instance, the demonstration server [https://peertube.cpy.re](https://peertube.cpy.re) has 2 vCore and 2GB of RAM and consumes on average: | |
45 | * **CPU** -> nginx ~ 20%, peertube ~ 10%, postgres ~ 1%, redis ~ 3% | |
46 | * **RAM** -> nginx ~ 6MB, peertube ~ 120MB, postgres ~ 10MB, redis ~ 5MB | |
47 | ||
48 | So you would need: | |
49 | * **CPU** 1 core if you don't enable transcoding, 2 at least if you enable it | |
50 | * **RAM** 1GB | |
51 | * **Storage** Completely depends on how many videos your users will upload | |
52 |