H.264/AVC (Any Video Converter) video scheduling method based on double decoding simulation

Abstract

The invention discloses an H.264/AVC (Any Video Converter) video scheduling method based on double decoding simulation. The method comprises the following steps of (1) calculating the packet quality contribution index (PQCI) of each H.264/AVC video packet to be transmitted, wherein PQCI is obtained by calculating two kinds of distortion, and each kind of distortion comprises two parts: the quality contribution of the video packet to a current frame and the quality contribution of the video packet to a subsequent frame; (2) during the calculation of the own quality contribution of each video packet, bringing two decoders into a transmitting end for performing distortion estimation by adopting a method based on double decoding simulation, and solving quality contribution; (3) during the calculation of the quality contribution of each video packet to the subsequent frame, solving by adopting a diffusion factor weighting method; and (4) sequencing and scheduling video packets to be transmitted according to the magnitudes of PQCIs, and transmitting the video packets. Due to the adoption of the H.264/AVC video scheduling method, the quality of videos decoded at a receiving end is improved, the performance of video transmission in a wireless network is improved, and user experience of the receiving end is improved finally.

Description

technical field [0001] The invention belongs to an H.264 / AVC video scheduling scheme in a wireless network, and relates to a priority scheduling method for H.264 / AVC video transmission in a wireless network, in particular to an H.264 / AVC video based on double decoding simulation priority scheduling method. Background technique [0002] With the popularization and development of wireless transmission technology, the use of wireless network for data transmission to realize information interaction has become a hot research topic at present. Among them, using mobile phones and other wireless terminals as multimedia experience devices such as video and audio has become a growing application trend and has a good application prospect. However, due to many reasons, video transmission in wireless networks has always faced many challenges. The reasons are as follows: (1) The instability and time-varying characteristics of the wireless network itself, such as time-varying transmission...

AI Technical Summary

Problems solved by technology

However, due to many reasons, video transmission in wireless networks has always faced many challenges. The reasons are as follows: (1) The instability and time-varying characteristics of the wireless network itself, such as time-varying transmission rates, there are more delays and jitters and delay etc.

(2) Real-time video data requires high transmission rate and is sensitive to delay

[0004] Although the above solutions have analyzed and solved the above problems from different angles and achieved the goal of improving the video quality to a certain extent, but due to the neglect of the importance of the content of the video package, it is impossible to accurately estimate or Simulation makes it difficult to accurately estimate the priority of each video packet, which leads to an unreasonable scheduling sequence, which in turn affects the substantial improvement of video quality

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