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Multi-level Inter-frame Parallelization in an Open Optimized VVC Encoder
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DOI：10.1145/3742869.png)
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Abstract
En 中文
This work investigates video encoding parallelization techniques based on the Versatile Video Coding (VVC) standard, using the open and optimized encoder software implementation VVenC. Modern multi-processor systems offer significant opportunities for accelerating video encoding. By employing a proposed combination of parallelization methods, the VVenC encoder achieves an acceleration factor of up to 22 compared to single-threaded mode on a 32-core system, with potential increases to 27 & times; at higher bitrates. Building upon prior work on Inter-frame Parallelization (IFP), the study introduces frame region-based synchronization, enabling further acceleration of up to 10%. Beyond that, the study demonstrates extending frame parallelization beyond Group of Pictures (GOP) boundaries, which improves IFP speed up by 37% and 11% at high-definition (HD) and ultra-high-definition (UHD) resolutions, respectively. Additional combinations with other VVC parallelization tools, such as tiles and VVC Wavefront Parallel Processing (WPP), are also explored. The article provides a comprehensive analysis of parallelization challenges and highlights areas for further improvement.
Keywords:
Video Encoder
Parallelization
VVenC
VVC
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