Data frame coding and decoding control method

Abstract

The invention discloses a data frame coding-decoding control method. A coding terminal carries out the sectional coding of the data frame and selects the intermediate frame of each section of data frames as the frame needing to go through the intra-frame coding; when each section of data frames is coded, the invention comprises the steps that: A. the data frame going before the selected frame sequentially is cached; B. the selected frame is coded into the I frame; C. other frames in data frames of the section are coded into the P frames with the I frame serving as a reference frame. The decoding terminal comprises the steps that: a. the received I frame is decoded and cached; b. the received P frames are decoded by referring to the decoded data of the I frame and the data frames after being decoded are displayed in order according to the time sequence information of the data frames. The utilization of the invention can enhance the quality of the data transmission and the fault tolerance against the packet loss.

Description

technical field [0001] The invention relates to data compression encoding and decoding technology, in particular to an encoding control method and a decoding control method of a data frame. Background technique [0002] With the popularity of instant messaging and the improvement of network bandwidth, more and more netizens start to use cameras for video chatting. In order to reduce the bandwidth occupied by video data, video compression coding technology is generally used to compress and code the video data frames at the sending end. At the receiving end, it is decoded according to the corresponding decoding technology to restore the video data. At present, video frames are compressed and encoded according to a time sequence method, which mainly includes the following two existing technologies. [0003] Prior art one: FIG. 1 is a schematic diagram of a video frame sequence for encoding control in prior art one. Referring to FIG. 1 , the prior art adopts segmental coding, ...

AI Technical Summary

Problems solved by technology

[0006] The shortcoming of above-mentioned this coding control method is: when decoding at the video receiving end, the coded frame (I frame or P frame) of any one video frame in a GOP is lost and can cause the coded frame of subsequent frame to be unable to decode correctly, even if subsequent frame Encoded frames are either received correctly or decoded correctly

[0011] Referring to Figure 2, if the No. 2 encoded frame is lost, even if the No. 3 and No. 4 encoded frames are received correctly, it cannot be decoded. The quality of data transmission is still greatly affected by packet loss, and the error tolerance to packet loss is still not high. It is an invisible waste of bandwidth resources

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