1. Adaptive Video Streaming over ICN
Adaptive Video Streaming over ICN draft-video-streaming-over-icn-01.txt Updates on: Open-Source Tools for DASH over CCN
bitmovin GmbH
Lakeside Science & Technology Park
Building B01
9020 Klagenfurt
Austria | Europe
Stefan Lederer, Daniel Posch, Christopher Mueller and Christian Timmerer
Alpen-Adria Universität Klagenfurt
Universitätsstrasse 65-77
9020 Klagenfurt
Austria | Europe
List:
dash.itec.aau.at
Stefan Lederer
Adaptive Video Streaming over ICN

2. Adaptive Video Streaming over ICN
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
Patches for the DASH VLC plugin
DASH Dataset, Public CCNx Repository
DASH over CCN version of libdash
Stefan Lederer
Adaptive Video Streaming over ICN

3. Adaptive Video Streaming over ICN
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
Official reference library (ISO/IEC ) 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:
DASH over HTTP2:
Stefan Lederer
Adaptive Video Streaming over ICN

4. Adaptive Video Streaming over ICN
DASH over CCN-enabled libdash:
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

5. Adaptive Video Streaming over ICN
DASH VLC Plugin
DASH over CCN implementation based on the well-known 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:
Set-setups/environments:
Stefan Lederer
Adaptive Video Streaming over ICN

6. Adaptive Video Streaming over ICN
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:
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

7. 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

8. Adaptive Video Streaming over ICN
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)
bitmovin GmbH
Lakeside Science & Technology Park
Building B01
9020 Klagenfurt
Austria | Europe
Daniel Posch, Stefan Lederer, Christopher Mueller and Christian Timmerer
Alpen-Adria Universität Klagenfurt
Universitätsstrasse 65-77
9020 Klagenfurt
Austria | Europe
List:
dash.itec.aau.at
Stefan Lederer
Adaptive Video Streaming over ICN

9. Multimedia – Dominant Traffic Source
Motivation
Multimedia – Dominant Traffic Source
2H 2013
Biggest traffic sources in peak times (North America)
Netflix
28.18%
YouTube
16.78%
Filesharing
Browsing
Similar for Asia and Europe
Similar for Mobile Access
Multimedia > 60%
Source: Sandvine, The Global Internet Phenomena Report , 2H Online:
Daniel Posch
Open Questions regarding DRM in ICN

10. 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:
Digital Rights Management (DRM)
Can we build an Video on Demand service based on ICN technology without DRM?
depends on the business model
Daniel Posch
Open Questions regarding DRM in ICN

11. 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

12. Open Questions regarding DRM in ICN
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

13. 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

14. Open Questions regarding DRM in ICN
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

15. 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

16. Adaptive Video Streaming over ICN
MPEG-DASH incl. ICN, CCN, HTTP2,
Alpen-Adria-Universität Klagenfurt & bitmovin GmbH
Join this activity, everyone is invited – get involved in and exited about DASH!
Questions, Comments?
Stefan Lederer
Adaptive Video Streaming over ICN

17. Additional References
[1] ISO/IEC DIS , 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: , July [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 [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 [8] A. Detti, M. Pomposini, N. Blefari-Melazzi, S. Salsano and A. Bragagnini, “Offloading cellular networks with Information-Centric 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, [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
Stefan Lederer
Adaptive Video Streaming over ICN