Encoding method, decoding method, encoding end and decoding end

Abstract

The invention discloses an encoding method, a decoding method, an encoding end and a decoding end, and belongs to the technical field of multimedia. The method comprises the following steps that the encoding end encodes a key frame in a video sequence to obtain the first encoded data; the encoding end encodes a non-key frame in the video sequence to obtain the second encoded data; and redundancy processing is carried out on the key frame used for determining the second coded data according to an FEC algorithm to obtain a redundant data packet, so that the difference value between the bandwidthused by the encoding end for sending the second encoded data added with the redundant data packet to the decoding end and the bandwidth used by the encoding end for sending the first encoded data iswithin the reference difference value, the bandwidth used in the process of transmitting the encoded data can be kept stable for different types of video frames, and meanwhile, when an encoded data loss phenomenon occurs at the decoding end, the key frame can be restored according to the redundant data packet, and accordingly the success rate of decoding the second coded data by the decoding end is improved.

Description

technical field [0001] The present application relates to the field of multimedia technology, in particular to an encoding and decoding method, an encoding end and a decoding end. Background technique [0002] With the development of multimedia technology, in order to facilitate video transmission, the encoding end can divide the video into multiple video sequences according to a fixed duration, and each video sequence includes multiple video frames. For each video sequence, the encoding end separately encodes the multiple video frames included in the video sequence to obtain multiple encoded data corresponding to the multiple video frames included in the video sequence, and then sends the multiple encoded data to the decoder. [0003] In related technologies, each video sequence usually includes a key frame and multiple non-key frames. A key frame refers to a video frame that encodes all pixel information and can independently decode a complete picture. A video frame enco...

AI Technical Summary

Problems solved by technology

[0004] However, in related technologies, if the current time coding end needs to send a key frame, since the current required bandwidth increases rapidly compared with the bandwidth required by the last sent non-key frame, the operator needs to increase the bandwidth at this time, and the operator There may be a delay when reallocating bandwidth, and the bandwidth required to send the key frame cannot be provided in time, resulting in video freezes

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