Video encoding method and device based on long-term reference frame

Abstract

The invention provides a video encoding method and device based on a long-term reference frame. The method comprises a step of obtaining a short term reference macroblock data and long term reference macroblock data corresponding to a current encoding macroblock, a step of using a first interframe prediction mode to obtain the interframe prediction information of a short term reference macroblock, and using a second interframe prediction mode to obtain the interframe prediction information of a long term reference macroblock, a step of carrying out fusion processing on all encoding sub macroblocks of the current encoding marcoblock according to the interframe prediction information of the short term reference macroblock and the interframe prediction information of the long term reference macroblock, and obtaining the interframe prediction information of the current encoding macroblock, and a step of carrying out motion compensation processing on all encoding sub macroblocks of the current encoding macroblock and obtaining the interframe prediction encoding data of the current encoding macroblock. The device provides an execution module for the method. By applying the video encoding method and device, the video compression rate and encoding quality can be improved effectively.

Description

technical field [0001] The present invention relates to the technical field of video encoders, in particular to a video encoding method based on long-term reference frames and a device for applying the method. Background technique [0002] In recent years, as high-definition and ultra-high-definition video applications have gradually entered people's field of vision, video compression technology has been greatly challenged. In addition, various video applications are emerging with the development of network and storage technologies. Today, digital video broadcasting, mobile wireless video, remote monitoring, medical imaging and portable photography have all entered people's lives. The diversification and high-definition trend of video applications put forward higher requirements for video compression performance. Therefore, improving the encoding quality and compression rate of surveillance video puts forward higher requirements for existing video compression technologies....

AI Technical Summary

Problems solved by technology

On the other hand, since the AVC / H.264 standard, multi-frame reference coding has become an effective means to improve the quality of video coding. Multi-frame reference can improve the coding prediction accuracy, but multi-frame reference processing will greatly increase the coding computational complexity and Hardware data transmission bandwidth increases the cost of hardware implementation. Compared with the improvement of coding quality, the traditional multi-frame reference efficiency is too low, so it is not suitable for the requirements of the new generation of surveillance video coding technology

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