Title :
Ultra Fast H.264/AVC to HEVC Transcoder
Author :
Tong Shen ; Yao Lu ; Ziyu Wen ; Linxi Zou ; Yucong Chen ; Jiangtao Wen
Author_Institution :
Tsinghua Univ., Beijing, China
Abstract :
The emerging High Efficiency Video Coding (HEVC) standard achieves significant performance improvement over H.264/AVC standard at a cost of much higher complexity. In this paper, we propose a ultra fast H.264/AVC to HEVC transcoder for multi-core processors implementing Wave front Parallel Processing (WPP) and SIMD acceleration, along with expedited motion estimation (ME) and mode decision (MD) by utilizing information extracted from the input H.264/AVC stream. Experiments using standard HEVC test bit streams show that the proposed transcoder achieves 70x speed up over the HEVC HM 8.1 reference software (including H.264 encoding) at very small rate distortion (RD) performance loss.
Keywords :
computational complexity; motion estimation; multiprocessing systems; parallel processing; transcoding; video coding; HEVC HM 8.1 reference software; HEVC test bitstreams; HEVC transcoder; MD; ME; RD performance loss; SIMD acceleration; WPP; high efficiency video coding standard; mode decision; motion estimation; multicore processors; rate distortion performance loss; ultra fast H.264-AVC; wavefront parallel processing; Acceleration; Encoding; Parallel processing; Software; Standards; Transform coding; Video coding;
Conference_Titel :
Data Compression Conference (DCC), 2013
Conference_Location :
Snowbird, UT
Print_ISBN :
978-1-4673-6037-1
DOI :
10.1109/DCC.2013.32
