Varsha Sewlal- Cyber Attacks on Critical Critical Infrastructure
Dynamic Adaptive Streaming over HTTP Dataset
1. AC M M u l t i m e d i a
Syste m s 2 0 1 2
Dynamic Adaptive Streaming over HTTP (DASH)
Dataset
Stefan Lederer, Christopher Müller and Christian
Feb. 22-24
2012 Timmerer
Chapel Hill Alpen-Adria-Universität Klagenfurt (AAU)
2. Motivation
• HTTP Streaming has become very popular on the
Internet
– Various different bitrates of the video are available on the
server --> choose the best version to load
– Easy to use existing CDN structure
– No NAT/Firewall issues due to HTTP
– Various technologies
• BUT: no standard in use!
ACM MMSys 2012, Feb. 22-24, Chapel Hill/NC/USA Slide 2
3. DASH
• Dynamic Adaptive Streaming over HTTP
(DASH)
– Will be Part 6 of MPEG-B
– Existing DASH Plugin for VLC
ACM MMSys 2012, Feb. 22-24, Chapel Hill/NC/USA Slide 3
4. Dataset
• Dataset with DASH Content
– Long sequences in high quality
– Various segment-length versions
– Free available for DASH experiments
– PSNR values per frame
• Problem: Content Rights
– CC-Attribution 2.0 Generic (CC-BY 2.0) License or similar
– Free to Share, Free to Remix
– Note: YouTube introduces CC-BY in June 2011!
• Negotiation with content owner
ACM MMSys 2012, Feb. 22-24, Chapel Hill/NC/USA Slide 4
5. Dataset Sequences
Name Source Quality Length Genre
Big Buck Bunny 1080p YUV 09:46 Animation
Elephants Dream 1080p YUV 10:54 Animation
Red Bull Playstreets 1080p, 6 Mbit H.264 01:37:28 Sport
The Swiss Account 1080p, 6 Mbit H.264 57:34 Sport
Valkaama 1080p, 6 Mbit H.264 01:33:05 Movie
Of Forest and Men SD 10:53 Movie
ACM MMSys 2012, Feb. 22-24, Chapel Hill/NC/USA Slide 5
15. Conclusion
• Public available and free DASH dataset
• Common basis for evaluations
– DASH Implementations, Stream Switching Algorithms,
Network and Cache Configurations, ...
– Enables objective comparison of research results
• Basic content generation tool: DASHEncoder
• Fully compatible to DASH VLC Plugin of ITEC/AAU
• Evaluation showing influence of segment length
ACM MMSys 2012, Feb. 22-24, Chapel Hill/NC/USA Slide 15
16. Future Work
• Dataset
– Further profiles and MPDs
– Further media segment formats
• Evaluation of mobile scenarios
– Under vehicular & pedestrian mobility
• Peer-assisted DASH
– Reduce server bandwidth requirements
– Inter-peer synchronisation & communication
ACM MMSys 2012, Feb. 22-24, Chapel Hill/NC/USA Slide 16
17. Stefan Lederer
Christopher Müller
Christian Timmerer
Thank You!
http://dash.itec.aau.at