[github/Chocobozzz/PeerTube.git] / FAQ.md

# FAQ

## If nobody watches a video, is it seeded?

Yes, the origin server always seeds videos uploaded on it thanks to
[Webseed](http://www.bittorrent.org/beps/bep_0019.html).


## What is WebSeed?

It is a BitTorrent extension that allows a server to seed a file through HTTP.
It just needs to statically serve a file, then the clients will request chunks
with a `Content-Range` HTTP header.


## If a client requests each chunk of a video through HTTP, will 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.


## Will an index of all the videos of servers you follow be too large for small servers?

In our benchmarks, 1,000,000 videos takes around 2GB of storage on PostgreSQL.
We think it is acceptable for a video platform.


## What codecs can I use for the videos I want to upload?

WEBM, MP4 or OGV videos.


## I want to change my host, how can I do that?

If you already have followers, you can't.

If you don't have any followers, update your configuration and run
`NODE_ENV=production npm run update-host` to update the torrent files (they contain your domain name).


## Should I have a big server to run PeerTube?

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:
 * **CPU** -> nginx ~ 20%, peertube ~ 10%,   postgres ~ 1%, redis ~ 3%
 * **RAM** -> nginx ~ 6MB, peertube ~ 120MB, postgres ~ 10MB, redis ~ 5MB
 
So you would need:
 * **CPU** 1 core if you don't enable transcoding, 2 at least if you enable it
 * **RAM** 1GB
 * **Storage** Completely depends on how many videos your users will upload
Commit	Line	Data
3266ad7c C	1	# FAQ
3266ad7c C	2
343ad675	3	## If nobody watches a video, is it seeded?
3266ad7c	4
e755a63a BB	5	Yes, the origin server always seeds videos uploaded on it thanks to
e755a63a BB	6	[Webseed](http://www.bittorrent.org/beps/bep_0019.html).
3266ad7c C	7
	8
	9	## What is WebSeed?
	10
e755a63a BB	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.
3266ad7c C	14
3266ad7c C	15
e755a63a	16	## If a client requests each chunk of a video through HTTP, will the server be overloaded?
3266ad7c	17
e755a63a BB	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.
3266ad7c C	21
3266ad7c C	22
e755a63a	23	## Will an index of all the videos of servers you follow be too large for small servers?
3266ad7c	24
e755a63a BB	25	In our benchmarks, 1,000,000 videos takes around 2GB of storage on PostgreSQL.
e755a63a BB	26	We think it is acceptable for a video platform.
3266ad7c C	27
3266ad7c C	28
e755a63a	29	## What codecs can I use for the videos I want to upload?
3266ad7c C	30
	31	WEBM, MP4 or OGV videos.
	32
	33
63bfad7e	34	## I want to change my host, how can I do that?
3266ad7c	35
fcaf1e0a C	36	If you already have followers, you can't.
fcaf1e0a C	37
e755a63a	38	If you don't have any followers, update your configuration and run
63bfad7e	39	`NODE_ENV=production npm run update-host` to update the torrent files (they contain your domain name).
588d837c C	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