2013 March Cisco Award dal titolo: Architecture for Robust and Efficient Control of Dynamic Adaptive Video Streaming over HTTP.
Principal Investigator: S. Mascolo
Finanziato dal fondo "Cisco University Research Program" amministrato dalla Silicon Valley Community Foundation
La ricerca riguarda lo studio di nuovi sistemi di controllo per la distribuzione di video su Internet con qualità che si adatta automaticamente alla connessione e al dispositivo dell’utente.

Cisco award entitled: Architecture for Robust and Efficient Control of Dynamic Adaptive Video Streaming over HTTP.
Principal Investigator: S. Mascolo
Funded by "Cisco University Research Program" managed by the Silicon Valley Community Foundation

The research deals with the study of new control systems for the video distribution over the Internet which automatically adapts the video quality to the user's connection and device.

2013 March In this paper,we present a model of the automatic video stream-switching employed by one of these leading video streaming services along with a description of the client-side communication and control protocol. From the control architecture point of view, the automatic adaptation is achieved by means of two interacting control loops having the controllers at the client and the actuators at the server: one loop is the buffer controller, which aims at steering the client playout buffer to a target length by regulating the server sending rate; the other one implements the stream-switching controller and aims at selecting the video level. A detailed validation of the proposed model has been carriedout through experimental measurements in an emulated scenario.

• L. De Cicco and S. Mascolo
  An Adaptive Video Streaming Control System: Modeling, Validation, and Performance Evaluation
  IEEE/ACM Transaction on Networking, in press (PDF)

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