A Layer-Level Parallel Encoding Framework for SVC

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文件名称：A Layer-Level Parallel Encoding Framework for SVC
文件大小：363KB
文件格式：PDF
更新时间：2019-02-24 12:55:37
SVC In this paper, we we first propose a parallel video coding framework, where three important factors: parallel strategy, computation complexity and scheduling of tasks are considered. Then considering the characteristics of medium-grain quality scalability (MGS)-based Scalable Video Coding (SVC), a new layer-level parallel encoding method is also introduced. Since each encoding task could have different priority under different parallel strategy, the scheduling of layer-level parallel encoding tasks is extremely complex. We use Directed Acyclic Graph (DAG) to model the relationship of encoding tasks and theoretically analyze how to find the optimal solution. Then according to the DAG model, several heuristic scheduling methods are employed to get a high speed-up ratio. Experiments show the speedup of our layer-level parallel method was higher than the prior works. Using the proposed method High Definition (HD) SVC videos can be encoded in real time with SIMD technology.