A long-term reference code stream encoding method and encoding device

Abstract

The invention discloses an encoding method and an encoding device for a long-term reference code stream, which are used to solve the problem that the original code stream generating equipment does not support the long-term reference encoding mode and has high cost. The method is as follows: the code stream generation device selects an IDR frame as the current long-term reference frame, performs P-frame encoding on the original YUV data corresponding to each IDR frame except the current long-term reference frame, and obtains the corresponding target P-frame code For stream data, replace the short-term reference code stream data corresponding to each IDR frame except the current long-term reference frame with the corresponding target P frame code stream data. In this way, the synthesis of long-term reference code streams can be realized by using the original code stream generation equipment. The realization process is simple and efficient, which ensures the image quality, reduces the coding rate, and saves storage space.

Description

technical field [0001] The invention relates to the field of video coding, in particular to a coding method and a coding device for a long-term reference code stream. Background technique [0002] At present, after the encoder in the code stream generation device encodes the collected YUV data, the format of the generated code stream is shown in Figure 1(a), which is IDRpp...ppIDRpp...pp, where The code stream size of the instant decoding refresh frame (Instantaneous Decoding Refresh, IDR) is usually several times or even ten times the code stream size of the forward predictive coding frame P frame, and it will occupy a large amount of storage when storing the reconstructed YUV data resource. [0003] In the prior art, the encoded code stream format (IDRpp...ppppp...pp) of a single IDR frame and all P frames as shown in Figure 1(b) is usually used to reduce the code stream size and save storage resources. However, In the encoding stream format of the above-mentioned single...

AI Technical Summary

Problems solved by technology

[0008] Embodiments of the present invention provide a long-term reference code stream encoding method and encoding device to solve the problem that most code stream generation devices do not support the long-term reference encoding method in the prior art, and the long-term reference encoding method in the prior art high cost problem

Images