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GPAC is a multimedia framework for research and academic purposes in different aspects of multimedia, with a focus on presentation technologies (graphics, animation and interactivity). The project started in 2003 with the initial goal to develop from scratch, in ANSI C, clean software compliant to the MPEG-4 Systems standard, a small and flexible(More)
In recent years, audio-visual distribution over Internet has witnessed the growing usage of HTTP based delivery systems. While these systems have their drawbacks for some use-cases, they also have many advantages, the most important one being reusing the existing delivery infrastructure such as HTTP servers, proxies and caches. The MPEG group has started(More)
The delivery of multimedia content over HTTP and on top of existing Internet infrastructures is becoming the preferred method within heterogeneous environment. The basic design principle is having an intelligent client which selects given and applicable media representations by issuing HTTP requests for individual segments based on the users' context and(More)
— HTTP Streaming is a recent topic in multimedia communications with ongoing standardization activities, especially with the MPEG DASH standard which covers on demand and live services. One of the main issues in live services deployment is the reduction of the overall latency. Low or very low latency streaming is still a challenge. In this paper, we push(More)
—Our work focuses on the encoding of two–dimen-sional (2-D) graphics animated cartoons with MPEG-4. This stems from a need to stop encoding cartoons as videos and to start using methods more adapted to animated 2-D vector graphics sequences. We expected this could be an efficient coding with good versatility for various types of terminals. First, we present(More)
— The seamless access to rich multimedia content on any device and over any network, usually known as Universal Multimedia Access, requires interoperable description tools and adaptation techniques to be developed. To address this, MPEG-21 introduces an adaptation framework, which provides several mechanisms for making adaptation decisions according to(More)
As the newly created standard for interactive television, HbbTV (for Hybrid broadband broadcast TV), is getting traction, the problem of recording TV services takes on new dimensions with interactive and hybrid services. This paper explores the different issues raised by the recording and on-demand playback of broadcast HbbTV services containing interactive(More)
Multimedia applications are challenging software and require collaboration of very different components such as networking, rendering, or scripting to provide a nice user experience. GPAC is an open source multimedia framework that implements a vast number of components and helps experimenting with different types of multimedia applications. It provides a(More)
The Huawei/3DLife Grand Challenge Dataset provides multimodal recordings of Salsa dancing, consisting of audiovisual streams along with depth maps and inertial measurements. In this paper, we propose a system for augmented reality-based evaluations of Salsa dancer performances. An essential step for such a system is the automatic temporal synchronisation of(More)