OpenTok is an API from TokBox that enables websites to weave live group video communication into their online experience. Check out http://www.tokbox.com/ for more information.
This is the official OpenTok Ruby Server SDK for generating Sessions, Tokens, and retriving Archives. Please visit our getting started page if you are unfamiliar with these concepts.

To install using bundler, add Opentok to your gemfile and run bundle install:

gem 'opentok'

To install as a regular gem just type gem install opentok

You need an api-key and secret. Request them at http://www.tokbox.com/opentok/tools/js/apikey.

In order to use any of the server side functions, you must first create an OpenTokSDK object with your developer credentials.
OpenTokSDK takes 2-3 parameters:

key (string) - Given to you when you register
secret (string) - Given to you when you register

# Creating an OpenTok Object
API_KEY = ''                # should be a string
API_SECRET = ''            # should be a string
OTSDK = OpenTok::OpenTokSDK.new API_KEY, API_SECRET

Use your OpenTokSDK object to create session_id
createSession takes 1-2 parameters:

location (string) - give Opentok a hint on where you are running your application
properties (object) - OPTIONAL. Set peer to peer as enabled or disabled. Disabled by default

# Creating Session object, passing request IP address to determine closest production server
session_id = OTSDK.createSession( request.ip )

# Creating Session object with p2p enabled
sessionProperties = {OpenTok::SessionPropertyConstants::P2P_PREFERENCE => "enabled"}    # or disabled
sessionId = OTSDK.createSession( @location, sessionProperties )

With the generated sessionId, you can start generating tokens for each user. generate_token takes in hash with 1-4 properties:

session_id (string) - REQUIRED
role (string) - OPTIONAL. subscriber, publisher, or moderator
expire_time (int) - OPTIONAL. Time when token will expire in unix timestamp
connection_data (string) - OPTIONAL. Metadata to store data (names, user id, etc)

# Generating a token
token = OTSDK.generateToken :session_id => session, :role => OpenTok::RoleConstants::PUBLISHER, :connection_data => "username=Bob,level=4"

To Download or delete archived video, you must have an Archive ID which you get from the javascript library. If you are unfamiliar with archiving concepts, please visit our archiving tutorial

OpenTok SDK has a function deleteArchive that lets you delete videos in a recorded archive. Use your OpenTokSDK object to call deleteArchive deleteArchive takes in 2 parameters and returns a true or false boolean representing the success of the delete request

archive_id (string) - REQUIRED
token (string) - REQUIRED. This token MUST have a moderator role, and it should be generated with the same session_id used to create the archive
returns
true: Success, the archive is deleted
false: Archive does not exist (perhaps it was already deleted or never created), invalid token (perhaps it does not have the moderator role or it's generated with the wrong session_id)

Example:

successful = OTSDK.deleteArchive( archive_id, token )

OpenTok SDK allows you to stich up to 4 videos together in an archive.
Use your OpenTokSDK object to call stitchArchive
stitchArchive takes in 1 parameter and returns a hash object with code, message, and location if stitch is successful.

archive_id (string) - REQUIRED
returns:
{:code=>201, :message=>"Successfully Created", :location=>response["location"]}
{:code=>202, :message=>"Processing"}
{:code=>403, :message=>"Invalid Credentials"}
{:code=>404, :message=>"Archive Does Not Exist"}
{:code=>500, :message=>"Server Error"}

Example:

result = OTSDK.stitchArchive archive_id
if result[:code] == 201
  return result[:location]
end

With your moderator token and OpentokSDK Object, you can generate OpenTokArchive Object, which contains information for all videos in the Archive
getArchiveManifest() takes in 2 parameters: archiveId and moderator token

archive_id (string) - REQUIRED. token (string) - REQUIRED. returns an OpenTokArchive object.
The resources property of this object is array of OpenTokArchiveVideoResource objects, and each OpenTokArchiveVideoResource object represents a video in the archive.

Example:(Make sure you have the OpentokSDK Object)

@token = '...'  # token generated with corresponding session
@archiveId = '5f74aee5-ab3f-421b-b124-ed2a698ee939' #Obtained from Javascript Library
otArchive = OTSDK.getArchiveManifest(@archiveId, @token)

OpenTokArchive.resources is an array of OpenTokArchiveVideoResource objects. OpenTokArchiveVideoResource has getId() method that returns the video_id
getId() will return the video ID (a String)

Example:

otArchive = OTSDK.getArchiveManifest(@archiveId, @token)
otVideoResource = otArchive.resources[0]
videoId = otVideoResource.getId()

OpenTokArchive has downloadArchiveURL that will return an url string for downloading the video in the archive. You must call this function every time you want the file, because this url expires after 24 hours

video_id (string) - REQUIRED
token (string) - REQUIRED
returns url string

Example:

url = otArchive.downloadArchiveURL(video_id, token)