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Event Reports
June 2011
Reports from SIGMM Sponsored and Co-sponsored EventsACM Multimedia Systems Conference 2011
The second MMSys conference was held in San Jose, CA, in February on the Cisco campus. The second MMSys conference saw a multiplication of the number of participants compared to the inaugural conference and was considered a great success by organizers and participants. We attribute the growth of the conference to several factors. MMSys becomes better know in the community after replacing MMCN; co-chair Christian Timmerer connected MMSys to the MPEG community by organizing a special session called "Multimedia Transport: DASH"; MMSys offered a dataset track that allows researchers to share the often-ignored work of collecting data and get credit for it; and conference fees were kept extremely low thanks to the sponsorship of our host, Cisco. An great addition was the provision of live feeds from MMSys to remote participants through Cisco's WebEx and Cisco TV. With 15 papers accepted for the main conference, 5 long and 4 short for the special session, 5 for the dataset track, 2 keynotes and demos by Cisco, MMSys was arranged as a 3-day event. The keynotes were held by Alain Fiocco of Cisco and Mark Watson of Netflix. The themes of the conference covered multimedia systems, real-time support for multimedia, modeling of multimedia systems, mobile multimedia systems, multimedia databases, networked games, virtual and augmented worlds, and several more. A special issue journal containing papers relevant for MMT: DASH is currently under preparation. Readers should note that slides from all presentations and the keynotes are available from the MMSys web page, http://www.mmsys.org. For the audience, MMSys started with a keynote from Cisco, where Alain Fiocco presented what Cisco sees as the future of the Internet. Unsurprisingly, this includes coping with the increased amount of traffic generated by video. As more and more multimedia devices get access to the internet, they believe the demand on the core network will increase significantly and smarter solutions than what we have today will be needed. One suggestion was that more logic and advanced devices will be placed in the network. The theme of the first session was wireless and mobile, where the papers combined wireless networks with the capabilities of modern mobile devices (like GPS, cameras and so on). For example, the paper "GPS-aided Recognition-based User Tracking System with Augmented Reality in Extreme Large-scale Areas" was about using GPS to improve augmented reality. The second session was titled "Networking", which contained three papers. Then, three papers on QoS and data transmission were presented, before several datasets were introduced in the last session. These will be hosted at the MMSys website and include traces from virtual worlds and a visual search dataset.
Day two began with a keynote by Mark Watson from Netflix. He spoke about their HTTP-streaming solution and gave details on and insight into how it works, and what challenges they are currently trying to solve. Several of these challenges concern the problem of understanding video quality, but also multipath streaming. MMSys continued with the first set of DASH-papers. It was a bit difficult to follow the presentations without prior knowledge. However, if you have an interest in the future of dynamic adaptive streaming, the papers are worth checking out. We were then shown several impressive Cisco demos, before the final session of the day took place. This session was about system performance, and included a very interesting presentation about using flash memory as video-on-demand storage, documented in the paper "Impact of Flash Memory on Video-on-Demand Storage: Analysis of Tradeoffs". The authors had performed several experiments and evaluated the performance of different combinations of storage, and concluded that while SSD was unsuitable as main storage, it was very efficient when combined with a traditional HDD. When using the SSD as a cache, the performance was better than HDD+DRAM, as well as cheaper. The first session of the third day was about encoding, while the conference finished with a second session on DASH. During the three days the conference lasted, we had several interesting discussions and got many ideas. After the final presentation, everyone agreed that it had been a good conference with interesting presentations and lots of cool people. If you are interested in multimedia systems, MMSys is highly recommended. PapersWireless and mobile
Networking
Data transmission and QoS
Dataset track
Modern media transport 1
System performance
Encoding and repair
Modern media transport 2
TOMCCAP, Volume 7, Issue 1, January 2011
Papers
TOMCCAP, Volume 7, Issue 2, February 2011
Papers
Reports from other ACM EventsMMSJ, Volume 17, Issue 1, February 2010
Papers
MMSJ, Volume 17, Issue 2, March 2010
Papers
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