ADAPTIVE VIDEO STREAMING OVER ICN
DRAFT-VIDEO-STREAMING-OVER-ICN-01.TXT
UPDATES ON:
OPEN-SOURCE TOOLS FOR DASH OVER CCN
Stefan Lederer, Daniel Posch, Christopher Mueller and Christian Timmerer
Alpen-Adria Universität Klagenfurt
bitmovin GmbH
eMail:
List:
office@bitmovin.net
Universitätsstrasse 65-77
9020 Klagenfurt
Austria | Europe
stefan.lederer@itec.aau.at
dash@itec.uni-klu.ac.at
dash.itec.aau.at
Stefan Lederer
Lakeside Science & Technology Park
Building B01
9020 Klagenfurt
Austria | Europe
www.bitmovin.net
Adaptive Video Streaming over ICN
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DASH & CCN = DASC
 Located at different protocol layers
 DASH at the application layer and CCN at the network layer
 Can be combined very efficiently: substitute HTTP by CCN
 Potential benefits
 Segments can be cached efficiently by CCN network nodes
 Data can be requested and transmitted via multiple links,
sources, etc.
 Various Implementations at http://dash.itec.aau.at
 Patches for the DASH VLC plugin
 DASH Dataset, Public CCNx Repository
 DASH over CCN version of libdash
Stefan Lederer
Adaptive Video Streaming over ICN
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https://github.com/bitmovin/libdash
http://www.bitmovin.net/libdash.html
 Open-source access library for MPEG-DASH
 Handles the download and xml parsing of the MPD
 Implements full MPEG-DASH standard according to ISO/IEC 23009-1
 Official reference library (ISO/IEC 23009-2) of ISO/IEC MPEG-DASH
 QT- & FFMPEG-based Sample Player to test and evaluate
 Configurable download interface, OO-based interface to the MPD
 Cross platform build system for Windows, Linux, Mac, etc. Enables the
integration of a variety of adaptation logics and profiles for evaluations
in research and development
 Very flexible structure that could be easily extended
 Used in Future Internet research:
 DASH over CCN: https://github.com/bitmovin/libdash/tree/CCN
 DASH over HTTP2: https://github.com/bitmovin/libdash/tree/http2
Stefan Lederer
Adaptive Video Streaming over ICN
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DASH over CCN-enabled libdash:
https://github.com/bitmovin/libdash/tree/CCN
 DASH over CCN enabled Version




DASH streaming over CCN
Based on CCNx
Testcontent available in form of CCNx repository
Testcontent available on remote server on the Internet (ccn.bitmovin.net)
Stefan Lederer
Adaptive Video Streaming over ICN
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DASH VLC PLUGIN
 DASH over CCN implementation based on the wellknown VLC player
 Enables the integration of a variety of adaptation logics and
profiles for evaluations in research and development
 Very flexible structure that could be easily extended, e.g., for
new adaptation algorithms, mobile (Android), etc.
 Fully integrated in the VLC structure
 DASH over CCN DASH plugin
 Patches public available:
• http://www-itec.uni-klu.ac.at/dash/?page_id=1097
 Set-setups/environments:
• http://www-itec.uni-klu.ac.at/dash/?page_id=1097#testsetup
Stefan Lederer
Adaptive Video Streaming over ICN
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DASH OVER CCN DATASETS
 CCNx Repository with DASH Content




Big Bug Bunny (CC)
Public available host: ccn.bitmovin.net
50 Kbit/s to 8 Mbit/s, 320x240 to 1920x1080
Segment Size: 2 seconds
 Syncing Tools, e.g., for Caching Evaluations:
 https://github.com/danposch/smartsync
 Additional Datasets (various content) at dash.itec.aau.at
 Various segment-length versions (1, 2, 4, 6, 10, 15 seconds)
 DASH datasets for scientific evaluations: player, adaption logics, cache
performance, etc.
 CC-Attribution 2.0 Generic (CC-BY 2.0) License or similar
 Free to Share, Free to Remix
Stefan Lederer
Adaptive Video Streaming over ICN
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NOT CCN, BUT USED FOR
MULTI-SOURCE/LINK:
DISTRIBUTED DASH DATASET
 Can be used for real-world evaluations
 simulation of switching between different CDNs/sources/etc.
 Client may dynamically switch between the mirrors
 e.g., in case the one currently used causes any issues
 Currently mirrored at different sites across Europe:
 Austria, France, and Czech Rep., Grete, Italy, USA, Taiwan
 Open for new mirrors/participants
 RedBull Playstreet sequence:
 Segment lengths of 2, 4, 6, 10, and 15 seconds
 ISOFF-Main and ISOFF-Live profiles
 17 representations, 100kbps to 6 Mbps, 320x240 to 1920x1080
Stefan Lederer
Adaptive Video Streaming over ICN
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ADAPTIVE VIDEO STREAMING OVER ICN
DRAFT-VIDEO-STREAMING-OVER-ICN-01.TXT
UPDATES ON:
OPEN QUESTIONS REGARDING DIGITAL RIGHTS
MANAGEMENT IN INFORMATION-CENTRIC NETWORKING
(AND A POTENTIAL APPROACH)
Daniel Posch, Stefan Lederer, Christopher Mueller and Christian Timmerer
Alpen-Adria Universität Klagenfurt
bitmovin GmbH
eMail:
List:
office@bitmovin.net
Universitätsstrasse 65-77
9020 Klagenfurt
Austria | Europe
stefan.lederer@itec.aau.at
dash@itec.uni-klu.ac.at
dash.itec.aau.at
Stefan Lederer
Lakeside Science & Technology Park
Building B01
9020 Klagenfurt
Austria | Europe
www.bitmovin.net
Adaptive Video Streaming over ICN
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OTIVATION
MULTIMEDIA –M
DOMINANT
TRAFFIC SOURCE
2H 2013
Filesharing
Browsing
Multimedia
> 60%
Biggest traffic sources in
peak times (North America)
Netflix
28.18%
YouTube
16.78%
 Similar for Asia
and Europe
 Similar for Mobile
Access
Source: Sandvine, The Global
Internet Phenomena Report , 2H
2013. Online: http://sandvine.com
Daniel Posch
Open Questions regarding DRM in ICN
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Challenges in ICN for Multimedia Distribution?
 Work in progress within the ICNRG
 Efficient content dissemination
 Adaptive streaming
 Mobility use-cases
 etc…
 No (visible) work in progress yet:
depends on the
business model
• Digital Rights Management (DRM)
 Can we build an Video on Demand service
based on ICN technology without DRM?
Daniel Posch
Open Questions regarding DRM in ICN
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What is DRM and why do we need it?
 Discrepancy between content providers / consumers
• Content providers wish to have their copyright protected
• Consumers want to access, use, copy and share content
 DRM is a tool that should to…
• control the access and the usage of digital media
• prevent the creation of illegal copies
• identify the perpetrator of copyright violations
 DRM is based on cryptographic techniques
Daniel Posch
Open Questions regarding DRM in ICN
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Streaming Media in ICN
 What needs to be done regarding DRM?
• Find a technology that allows to build a subscription-based
streaming services over an ICN infrastructure
• Create a solution to control the access to the content
 What are the difficulties? Well, in ICN …
• data can be fetched by anyone from any node
• data is publicly authenticated
 The obvious solution is Encryption of the data
• But is it really that easy? Unfortunately, its not…
Daniel Posch
Open Questions regarding DRM in ICN
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Is Content Encryption a potential Solution?
 Encrypting the content for all legitimate consumers
with a single key is not a solution, because…
• Malicious clients could publish the key
• There is no way to identify/exclude malicious clients
 So, why not encrypt the content for each
consumer with an unique key?
• Lose the advantages of ICN caching,
since data for each client would be different
• High load on the server due to lots of data encryption
• The system would be inefficient / resource demanding
Daniel Posch
Open Questions regarding DRM in ICN
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A possible approach: Broadcast Encryption
(BE) as starting point for DRM in ICN
 Allows server(s) and clients to agree on a common
session key, which is valid for some timeframe
 Enables to identify and exclude malicious users
 Supports dynamics (easy un/subscription of clients)
 Retrains the advantage of ICN Caching
 Reduces the server’s resource consumption, if…
• The updates of the session key are scheduled carefully
• Content is dynamically re-encrypted on first request in a
timeframe (untapped content must not be re-encrypted)
Daniel Posch
Open Questions regarding DRM in ICN
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But there are still a lot of open challenges
 How to adapt the concept of BE so that it fits to an ICN
communication paradigm perfectly?
 Which BE schemes are suitable and can be used
efficiently within an ICN infrastructure?
 What is the optimal interval for a session key to be valid
(tradeoff between security, operationality and cache
efficiency)?
 How to evict data from ICN caches, which are encrypted
with a stale session key (Freshness)?
 And lots more…
Daniel Posch
Open Questions regarding DRM in ICN
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MPEG-DASH incl. ICN, CCN, HTTP2, etc. @
Alpen-Adria-Universität Klagenfurt & bitmovin GmbH
Join this activity, everyone is invited – get involved in
and exited about DASH!
http://dash.itec.aau.at
Questions,
Comments?
Stefan Lederer
Adaptive Video Streaming over ICN
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ADDITIONAL REFERENCES
[1] ISO/IEC DIS 23009-1.2, Information technology — Dynamic adaptive streaming over HTTP (DASH) — Part 1: Media
presentation description and segment formats
[2] Lederer, S., Müller, C., Rainer, B., Timmerer, C., Hellwagner, H., “An Experimental Analysis of Dynamic Adaptive Streaming
over HTTP in Content Centric Networks”, in Proceedings of the IEEE International Conference on Multimedia and Expo 2013,
San Jose, USA, July, 2013
[3] Liu, Y., Geurts, J., Point, J., Lederer, S., Rainer, B., Mueller, C., Timmerer, C., Hellwagner, H., “Dynamic Adaptive Streaming
over CCN: A Caching and Overhead Analysis”, in Proceedings of the IEEE international Conference on Communication (ICC)
2013 – Next-Generation Networking Symposium, Budapest, Hungary, June, 2013
[4] Grandl, R., Su, K., Westphal, C., “On the Interaction of Adaptive Video Streaming with Content-Centric Networks”, eprint
arXiv:1307.0794, July 2013.
[5] S. Lederer, C. Müller, B. Rainer, C. Timmerer, and H. Hellwagner, “Adaptive Streaming over Content Centric Networks in
Mobile Networks using Multiple Links”, in Proceedings of the IEEE International Workshop on Immersive & Interactive
Multimedia Communications over the Future Internet, Budapest, Hungary, June, 2013
[6] D. Posch, H. Hellwagner, P. Scharter “On-Demand Video Streaming based on Dynamic Adaptive Encrypted Content
Chunks” In Proceedings of IEEE International Conference on Network Protocols / NPSec Workshop, October 2013.
[7] V. Jacobson, D. Smetters, J. Thornton, M. Plass, N. Briggs and R. Braynard, “Networking named content”, in Proc. of the 5th
int. Conf. on Emerging Networking Experiments and Technologies (CoNEXT '09). ACM, New York, NY, USA, 2009, pp. 1-12.
[8] A. Detti, M. Pomposini, N. Blefari-Melazzi, S. Salsano and A. Bragagnini, “Offloading cellular networks with InformationCentric Networking: The case of video streaming”, In Proc. of the Int. Symp. on a World of Wireless, Mobile and Multimedia
Networks (WoWMoM ‘12), IEEE, San Francisco, CA, USA, 1-3, 2012.
[9] A.Detti, B. Ricci, N. Blefari-Melazzi, “Supporting mobile applications with Information Centric Networking: the case of P2P
live adaptive video streaming”, ACM SIGCOMM 2013, ICN workshop,Hong Kong, China, 12 August 2013
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