Uplink Transfer of Live Video Synchronized with Multiple Contextual Data

Ahmed Bouabdallah (1) , Houssein Wehbe (1) , Bruno Stévant (1)

1 RSM - Département Réseaux, Sécurité et Multimédia

A promising feature brought along the progressive deployment of LTE concerns the increase of the uplink bandwidth. We focus in this paper on an innovative usage associated with this new capability and defined by the simultaneous transmission toward websites or distant spectators of live video caught through end user devices like smartphones, together with contextual data generated by the device. The contextual information may indeed be precious to the spectator for several reasons. On one side, this information cannot be deduced from the video images currently displayed. On the other side, being closely related to the live event currently displayed, context can be fruitfully exploited by the spectator to complete her understanding of what she is presently watching and to possibly interact with the filming person to influence the rest of the capture. The main property of this new feature can be expressed as a synchronization constraint between the video and the contextual data. Ensuring this property is challenging due to the presence of variable delays in the end-to-end path. We proposed in a previous work solution handling desynchronization between video and contextual data using restricted assumptions. In this paper, we tackle the general case relaxing all the restricted assumptions.

Mots clés: Live video; Context; Real-time transmission; Synchronization

Domaines: Informatique mobile; Informatique ubiquitaire; Multimédia [cs.MM]; Réseaux et télécommunications [cs.NI]

Ahmed Bouabdallah, Houssein Wehbe, Bruno Stévant. Uplink Transfer of Live Video Synchronized with Multiple Contextual Data. Media Synchronization Workshop 2012, Oct 2012, Berlin, Germany. ⟨hal-00782228⟩