GB28181-based high-definition low-code video conversion method, device and application

The invention provides a GB28181-based high-definition low-code video conversion method and device and application, and the method comprises the following steps: obtaining at least one piece of GB28181 stream data, dividing the GB28181 stream data into a stream identifier and a stream feature, and respectively storing the stream identifier and the stream feature in a disk IO; a buffer is arranged on a memory, the buffer sequentially reads corresponding stream features according to stream identifiers stored on a disk IO, data irrelevant to videos in the stream features are filtered out through an audio and video filter to obtain video data, and stream decoding is carried out on the video data to obtain YUV data; the YUV optimizer is used for optimizing the YUV data, data with poor data quality in the YUV data are filtered out, and optimized data are obtained; and defining a compression dictionary, and performing coding compression on the optimized data according to the compression dictionary to obtain an outpu