Novel approaches to parallel H.264 decoder on symmetric multicore systems
ICASSP '09 Proceedings of the 2009 IEEE International Conference on Acoustics, Speech and Signal Processing
Mapping scalable video coding decoder on multi-core stream processors
PCS'09 Proceedings of the 27th conference on Picture Coding Symposium
A comparison between SVC and transcoding
IEEE Transactions on Consumer Electronics
Fast and memory-efficient up-sampling methods for H.264/AVC SVC with extended spatial scalability
IEEE Transactions on Consumer Electronics
Complexity of optimized H.26L video decoder implementation
IEEE Transactions on Circuits and Systems for Video Technology
Mobile Video Transmission Using Scalable Video Coding
IEEE Transactions on Circuits and Systems for Video Technology
Overview of the Scalable Video Coding Extension of the H.264/AVC Standard
IEEE Transactions on Circuits and Systems for Video Technology
Journal of Network and Computer Applications
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The inter-layer prediction (ILP) including intra, residual, and motion up-sampling operation in Scalable Video Coding (SVC) significantly increases the compression ratio compared to simulcast. The SVC Codec capable of processing the inter-layer prediction among multiple layers, however, requires much more memory and computational power than single-layer MPEG-4 AVC/H.264 Codec. This paper presents a fast and memory-efficient multithreading architecture for real-time MPEG-4 AVC/H.264 Scalable High profile decoder. Unlike existing approaches where multi-threaded video encoding and decoding have been performed within a frame or among frames, the designed algorithm utilizes inter-layer parallelism based on a group of macroblocks (GOM). Also, improved buffer management can be achieved by the proposed access unit (AU) based decoding architecture for enabling GOM-based inter-layer multithreading architecture. The proposed multithreading architecture has three properties: (1) scalable to the number of SVC layers, (2) no additional coding delay, and (3) no additional memory requirement. Experimental results show that the proposed multithreading architecture speeds up the decoding time of 3-layer extended spatial scalability sequences by about 36% on average, 3-layer coarse grain scalability 50%, and 5-layer medium grain scalability by about 102%, respectively, compared to a single-threaded SVC decoder.