Gabriel Cebrián-Márquez
ABSTRACT
The rapid emergence and rise of a wide range of electronic devices has led to the need for providing very different levels of video transmission services. The capabilities and performance of these devices determine the type of video streams that they are able to decode. As a way to fulfil their requirements, this paper presents a heterogeneous simultaneous encoding framework of H.264/Advanced Video Coding (AVC) and High Efficiency Video Coding (HEVC) that shares information between encoders in order to reduce the overall encoding time. In this regard, the proposed approach utilizes the H.264/AVC motion vectors of the 16x16 pixels macroblocks as predictors for the HEVC prediction units. As a consequence, the size of the motion estimation search area can be significantly reduced. Results show that an encoding time reduction of 8.95% can be achieved with negligible losses in terms of rate-distortion.
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