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. © 2012 ICST Institute for Computer Science, Social Informatics and Telecommunications Engineering.
CITATION STYLE
Van Wallendael, G., Van Leuven, S., Garrido-Cantos, R., De Cock, J., Martínez, J. L., Lambert, P., … Van De Walle, R. (2012). Fast H.264/AVC-to-SVC transcoding in a mobile television environment. In Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering (Vol. 77 LNICST, pp. 607–618). https://doi.org/10.1007/978-3-642-35155-6_49
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