MediaMosa architecture & features

Frans Ward

Technical Product Manager
SURFnet Advanced Services
Frans.Ward@surfnet.nl

MediaMosa:
Architecture & Features
Expertise seminar, 10 juni 2010
MediaMosa, Weblectures & Open Video
`

Agenda

25 min.

SURFnet Video Services
SURFmedia
MediaMosa Architecture
MediaMosa Features
MediaMosa Open Source
MediaMosa Community
MediaMosa Status & Roadmap
5 min.

Questions

SURFnet Video Services
1998 Audio & Video hosting service (FTP) - 1st generation

2003 SURFnet Video Portal (SVP) - 2nd generation

2005 SURFnet-TV Live Netcasting

2007 Start new generation video services - 3rd generation

Part of the SURFnet/Kennisnet Innovation program
Separate backend - frontend functionality

Expertise seminar: MediaMosa, Weblectures & Open Video, 10 juni 2010
SURFnet. We make innovation work

3rd generation Video Services
Architecture Requirements

Front-end
• Based on a Service Oriented

SURFmedia
Architecture (SOA)

• Separation of frontend and
backend functionality

• Multiple end-user applications on a
centralized video backend
infrastructure

MediaMosa
• Flexibility: combining components

Back-end
• Performance and High availability

• Scalable for future expansions

• Open source and open source
components !


SURFmedia
SURFnet’s online mediaportal

www.surfmedia.nl

SURFmedia Front-end
SURFnet’s online mediaportal

www.surfmedia.nl

SURFmedia Facts and Figures
+
/- 25.000 user accounts

+
/- 85.000 videos

+
/- 250.000 requested streams per month

+
/- 15 TB of video assets

Content Suppliers:


• Common base for MediaMosa
is Drupal:
✓ Open Source
✓ Content Management System
✓ Web Application Framework
✓ Modulair, Hook-oriented and Scaleable

• Service Oriented Architecture (SOA)

• REST on the outside,
REST on the inside

• Scalability,
Redundancy,
High Availability


Back-end
• Common base for MediaMosa
is Drupal:
✓ Open Source
✓ Content Management System
✓ Web Application Framework
✓ Modulair, Hook-oriented and Scaleable

• Service Oriented Architecture (SOA)

• REST on the outside,
REST on the inside

• Scalability,
Redundancy,
High Availability


REST
Representational State Transfer

• All interactions (messages) with the [GET] .../asset?limit=10
MediaMosa platform are done with REST-calls. <?xml version="1.0"?>
<response>

• REST strictly refers to a collection of network
<header>
<item_count>8</item_count>
<item_count_total>8</item_count_total>
architecture principles which outline how <item_offset>0</item_offset>
resources are deﬁned and addressed. <request_process_time>0.0728</request_process_time>
<request_query_count>55</request_query_count>
<request_result>success</request_result>

• REST is a Client-server, Stateless, <request_result_description></
request_result_description>
Cacheable and Layered protocol. <request_result_id>601</request_result_id>
<request_uri>[GET] asset?
limit=10&user_id=admin&is_app_admin=TRUE</
request_uri>
✓ This reduces the complexity <vpx_version>1.7.3</vpx_version>
</header>
✓ improves the effectiveness of performance <items>
tuning <item id="1">
✓ increases the scalability of pure server <asset_id>ZG3SmyybQ61abezpbVHrJkFF</asset_id>
components ..... etc


Webservices http://mediamosa.org/api
Over 150, divided in services for....

• Play Video (PlayProxy HTML wrapper)
• Authentication (DBUS for EUA)
• Authorization
(Domain, REALM, Group or mixed)
• Upload (PUT, POST, FTP)
• Transcoding
• Media Management: mediaﬁles, assets
and collections
• Search: Contextual Query Language
• Jobs
• Metadata and OAI/PMH
• Notiﬁcation
• Logging and Statistics


Flexible Metadata
Element Sets
Metadata Element Sets Provided:
• Standard Dublin Core (DC)
• Qualified Dublin Core (QDC)
• Learning Object Metadata (IEEE LOM)
• ‘Content Zoek Profiel’ (CZP)
Plus support for own (custom) Metadata Element Sets

CRUD REST-calls on all objects possible. i.e.:
• POST /asset/create?user=John
• GET /asset/$asset_id
• POST /mediafile/$mediafile?filename=NewName
• POST /collection/$coll_id/delete?user=John


Metadata Harvesting
using OAI-PMH
Open Archives Initiative - Protocol for Metadata Harvesting

• is a low-barrier mechanism for repository
interoperability.
• Data Providers are repositories that expose structured
metadata via OAI-PMH.
• Service Providers then make OAI-PMH service
requests to harvest that metadata.
• OAI-PMH is a set of six verbs or services that are
invoked within HTTP.
http://oai.surfmedia.nl/request?verb=Identify
http://oai.surfmedia.nl/request?verb=ListSets
http://oai.surfmedia.nl/request?verb=ListRecords&metadataPrefix=oai_qdc
http://oai.surfmedia.nl/request?verb=ListRecords&metadataPrefix=oai_dc
http://oai.surfmedia.nl/request?verb=ListRecords&metadataPrefix=oai_lom
http://oai.surfmedia.nl/request?verb=ListRecords&metadataPrefix=czp
http://oai.surfmedia.nl/request?verb=ListRecords&metadataPrefix=oai_qdc&set=coll_id:794


Access Management
Default: Media is accessible for everyone.
Option to set access restrictions for playing media on the
following properties:

• Domain, i.e only accessible from surfnet.nl
• Groups of domains, i.e.: Academia group (all universities)
• Realm, i.e. using ASelect, Entree, DigiD, SURFfederation
• Groups of Realms, i.e.: '@teleblik' realm
• User: only give rights to user=john
• Groups of users, i.e.: only give rights to users of group
"class-24".

Combinations of the above are possible! De end-user
application designer decides how and what to use.


Upload Services
• POST upload using End User Application
(limited to 2 GB)

• POST upload directly to MediaMosa Platform
using ticket system (limited to 2 GB)

• HTTP PUT upload using End User Application
(i.e. Java Upload Applet)

• FTP batch upload (“no” limits) including
metadata in XML ﬁle

• Quota per End User Application
MediaMosa
• Support for Master / Slave content sharing
(Provider Application / CLA)


End-user Application.
Web frontend for media distribution.
SURFnet: SURFmedia
Kennisnet: Teleblik


SURFnet: SURFmedia
Kennisnet: Teleblik

Video backend infrastructure,
including streaming- and transcoding servers and
storage.
SURFnet/Kennisnet: VP-Core


SURFnet: SURFmedia
Kennisnet: Teleblik

storage.

Support Applications:
White Label EGA, Provider Application and OAI
Provider / Harvester


SURFnet: SURFmedia
Kennisnet: Teleblik

storage.

Support Applications:
White Label EGA, Provider Application and OAI
Provider / Harvester

Powered by MediaMosa:
open source application
for media management and distribution


VP-Core
• Shared platform SURFnet and Kennisnet
• Application, streaming-, transcoding servers + storage
• Powered by MediaMosa


VP-Core

Intern Seminar, 16 November 2009
SURFnet, Pioneering Network for Higher Education and Research

Intern Seminar, 16 November 2009
SURFnet, Pioneering Network for Higher Education and Research

Open Source
GPLv2
Open as in Open Source,
Open Technology, Open
Formats, Open Content,
Open Exchange.

Partner for development:

Main Entry: 1me·dia-mo-sa
Pronunciation: ˈmē-dē-ә-mō-ˈzā
Function: open source software to build a
media management and distribution platform
Release Date: 8 april 2009


MediaMosa: What is included?
✓ The back-end code


✓ The MediaMosa Admin Application


✓ The White Label Enduser Application (WLE)


MediaMosa Community


MediaMosa Community

http://mediamosa.org


• Code repository Subversion (SVN)
• Community Forum
• Documentation
• Issue Tracker
• Online Reference Guide
• Wiki
• Projects:
MediaMosa Building Block for Blackboard
RichMedia EGA for viewing weblecture recordings

Open access
English language
http://mediamosa.org

Planet MediaMosa
WWW
http://mediamosa.org/

Forum
http://mediamosa.org/forum

Lists
announce@lists.mediamosa.org
devel@lists.mediamosa.org
trac@lists.mediamosa.org

Issue Tracker
http://mediamosa.org/trac

Subversion (SVN)
http://mediamosa.org/trac/browser


MediaMosa Status & Roadmap
Available on
mediamosa.org
Release 2.1

Continued development:
2010: Three major releases based on new Drupal 7 framework
Focus to provide a better and more supported
community version for open source development

Some Topics:
• Rich Media - Weblecture recording support
• Transcripting Technology Scout
• MediaMosa Open API / Cloud
• Enhanced support for other content than audio/video


MediaMosa Highlights
★ MediaMosa is the basis for various successful video services
that SURFnet and Kennisnet provide to the Dutch
educational sector

★ Open as in Open Source, Open Technology, Open Formats,
Open Content, Open Exchange, Open Access

★ Options to set access restrictions for playing media

★ Modular and Highly Flexible

★ Features a Rich Feature set

★ New 2.x version introduces many improvements for open
source developers

Todo:
- MediaMosa Demo and Labs environment
- supply VM images for easier startup


MediaMosa architecture & features

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