On the definition of adapted audio/video profiles for high-quality video calling services over LTE/4G

Abstract : During the last decade, the important advances and widespread availability of mobile technology (operating systems, GPUs, terminal resolution and so on) have encouraged a fast development of voice and video services like video-calling. While multimedia services have largely grown on mobile devices, the generated increase of data consumption is leading to the saturation of mobile networks. In order to provide data with high bit-rates and maintain performance as close as possible to traditional networks, the 3GPP (The 3rd Generation Partnership Project) worked on a high performance standard for mobile called Long Term Evolution (LTE). In this paper, we aim at expressing recommendations related to audio and video media profiles (selection of audio and video codecs, bit-rates, frame-rates, audio and video formats) for a typical video-calling services held over LTE/4G mobile networks. These profiles are defined according to targeted devices (smartphones, tablets), so as to ensure the best possible quality of experience (QoE). Obtained results indicate that for a CIF format (352 x 288 pixels) which is usually used for smartphones, the VP8 codec provides a better image quality than the H.264 codec for low bitrates (from 128 to 384 kbps). However sequences with high motion, H.264 in slow mode is preferred. Regarding audio, better results are globally achieved using wideband codecs offering good quality except for opus codec (at 12.2 kbps).
Type de document :
Communication dans un congrès
Proc. SPIE 9016, Image Quality and System Performance XI, Feb 2014, San Francisco, CA, United States. 2014
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https://hal.archives-ouvertes.fr/hal-01159204
Contributeur : Mohamed-Chaker Larabi <>
Soumis le : mardi 2 juin 2015 - 17:36:00
Dernière modification le : mardi 19 janvier 2016 - 17:51:04

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  • HAL Id : hal-01159204, version 1

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Maty Ndiaye, Catherine Quinquis, Mohamed-Chaker Larabi, Gwenaël Le Lay, Abdelhakim Saadane, et al.. On the definition of adapted audio/video profiles for high-quality video calling services over LTE/4G. Proc. SPIE 9016, Image Quality and System Performance XI, Feb 2014, San Francisco, CA, United States. 2014. 〈hal-01159204〉

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