Video coding and compressing method

Abstract

The invention discloses a video coding and compressing method, relating to the technical field of video coding. The video coding and compressing method comprises the following steps of: S1. pre-coding source video streaming, reestablishing all groups of pictures (GOP), and obtaining X GOPs and X I frames; S2. calculating the macro-block coincidence degrees of all the I frames, merging the I-frames with the macro-block coincidence degrees reaching a threshold value into a group, and obtaining N groups of I frames, wherein N is less than or equal to X; S3. calculating an optimizing and coding factor K of the source video streaming subjected to the S2, calculating a coding rate Z for coding the source video streaming according to the K; S4. coding the source video streaming according to the coding rate Z, taking sample frames in the predetermined N groups of I-frames as the I frames during coding, and taking the I frames serving as non-sample frames as P frames taking the sample frames in the same group as reference frames. According to the video coding and compressing method, the compression ratio of videos is increased.

Description

technical field [0001] The invention relates to the technical field of video coding, in particular to a video coding compression method. Background technique [0002] With the gradual improvement of the IP network infrastructure, more and more people start to watch video content through the IP network, including watching on a computer monitor connected to the wired Internet through a PC, or connected to a 3G wireless network through a mobile phone. At present, video data traffic has accounted for 70% of the entire Internet traffic, consuming a large amount of bandwidth resources and storage resources. [0003] At present, network video files basically use H.264 for video encoding, and then encapsulate the video stream and audio stream into container formats such as MP4, FLV, F4V or MKV. The standard H.264 encoder can compress 480P resolution video To 800 ~ 1000Kbps, compress 720P resolution video to 2Mbps. As a result, many users with low network access speeds, such as 1Mb...

AI Technical Summary

Problems solved by technology

As a result, many users with low network access speeds, such as 1Mbps ADSL users, cannot watch high-quality 480P and 720P videos at all, especially 720P videos, which can hardly be played smoothly while downloading

[0004] As a result, the picture quality of most of the current online videos is poor, unable to reach the high-definition standard of 720P, and even many of them cannot reach the standard-definition standard of 480P, or although they have reached the resolution of 480P or 720P, due to the high bit rate Make most users unable to watch smoothly

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