Video data coding method and coding device

Abstract

The invention discloses a video data coding method, comprising: obtaining video data required for coding the current frame; according to a preset mode, judging whether the next frame of the current frame needs to be coded to a video key frame; and when the next frame of the current frame needs to be coded to the video key frame, coding the obtained video data into a video prediction frame in a preset code rate lowering mode. Thus, when video communication is carried out, if the coding device in a transmitting end determines that the video data at certain time needs to be coded to the video key frame in a preset mode, the video data transmitted at the previous time is subjected to code rate lowering coding to balance increased data transmission amount when the video key frame is coded at certain time, thus effectively avoiding the phenomenon of code word impact, ensuring the service stability of a video communication system, and improving the quality of video communication service.

Description

Technical field [0001] The present invention relates to the field of video communication, in particular to a video data encoding method and an encoding device thereof. Background technique [0002] In the video communication process, in order to ensure the picture quality, the video encoder will encode the video data to be encoded into video key frames (also called I frames) at a certain frequency, and the data to be encoded at the rest of the time will be encoded into video prediction frames (Also called P frame or B frame). The video key frame stores the complete video data corresponding to a picture, and the video prediction frame is used to adjust the video key frame or the previous video prediction frame to obtain a new picture. [0003] In the prior art, various video encoders used in the field of video communication are all based on a hybrid coding framework, and an inherent problem with this coding framework is: the number of bits generated by encoding the image contained ...

AI Technical Summary

Problems solved by technology

However, this solution belongs to a post-processing method, that is, an emergency treatment measure that is taken after the codeword shock occurs; obviously, this solution cannot avoid the occurrence of the codeword shock phenomenon, but only after the codeword shock phenomenon occurs Finally, try to reduce the impact of codeword impact on the channel, and this solution is at the cost of reducing the frame rate. If the number of consecutively skipped frames is too large, it may cause video screen jumps and affect the service quality of the video communication system.

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