Research Article
Fast H.264/AVC-to-SVC Transcoding in a Mobile Television Environment
@INPROCEEDINGS{10.1007/978-3-642-35155-6_49, author={Glenn Wallendael and Sebastiaan Leuven and Rosario Garrido-Cantos and Jan Cock and Jos\^{e} Mart\^{\i}nez and Peter Lambert and Pedro Cuenca and Rik Walle}, title={Fast H.264/AVC-to-SVC Transcoding in a Mobile Television Environment}, proceedings={Impact of Scalable Video Coding on Multimedia Provisioning}, proceedings_a={SVCVISION}, year={2012}, month={12}, keywords={H.264/AVC-to-SVC transcoding complexity reduction fast mode decision cascaded pixel-domain transcoding}, doi={10.1007/978-3-642-35155-6_49} }- Glenn Wallendael
Sebastiaan Leuven
Rosario Garrido-Cantos
Jan Cock
José Martínez
Peter Lambert
Pedro Cuenca
Rik Walle
Year: 2012
Fast H.264/AVC-to-SVC Transcoding in a Mobile Television Environment
SVCVISION
Springer
DOI: 10.1007/978-3-642-35155-6_49
Abstract
Mobile TV environments demand flexible video compression like Scalable Video Coding (SVC) because of varying bandwidths and devices. Since existing infrastructures highly rely on H.264/AVC video compression, network providers could adapt the current H.264/AVC encoded video to SVC. This adaptation needs to be done efficiently to reduce processing power and operational cost. Since a cascaded decoder-encoder solution is too complex to be practical, we developed a mechanism to encode scalable video streams from existing H.264/AVC encoded video streams. This paper proposes a novel technique to accelerate the encoding of SVC streams by reusing information from the H.264/AVC stream and the base layer. We achieved a complexity reduction of 52%, while only an insignificant bit rate increase is reported (0.2%). According to these results, an H.264/AVC-to-SVC transcoder is usable with a low operational cost without compromising the coding efficiency.