dmb video push method based on multiple description coding

Abstract

The present invention relates to a DMB video push method based on multiple description coding, belonging to the field of DMB video push, comprising the following steps: S1: decomposing a source video into a description of a low-quality video and a description of a high-quality video, and compressing and packaging them; S2: Push the video file processed in step S1 to the receiving end by alternately pushing high and low quality videos; S3: The receiving end checks and decodes the two sub-signals pushed by the transmitting end, and then reconstructs the corresponding video for playback . The present invention decomposes the source video into two descriptions, one with high resolution and one with low resolution, and pushes the two videos in sections through the DMB system, so that the receiving end can play a rough but acceptable video in a short time, waiting After the high-quality video segment is received, it is synthesized and replaced with the corresponding low-quality segment to shorten a long blank period at the receiving end due to waiting to receive high-definition video with a large memory.

Description

technical field [0001] The invention belongs to the field of DMB video push, and relates to a DMB video push method based on multiple description coding. Background technique [0002] DAB (Digital Audio Broadcast, Digital Audio Broadcasting) and its upgraded DAB+ and DMB standards are a new generation of digital broadcasting systems that replace traditional analog broadcasting such as FM and AM, and are currently the most competitive digital broadcasting standards in the world with the most potential users . At present, 36 countries and regions in the world have adopted the DAB series standards, including most countries in Europe such as the United Kingdom, France, Germany, Italy, Norway, and Sweden, South Korea, Indonesia, Singapore, Malaysia, etc. in Asia, as well as South Africa and Australia. China has also introduced DAB technology and officially promulgated national standards in 2006. At present, there are nearly 2,000 commercial DAB stations worldwide, covering a po...

AI Technical Summary

Problems solved by technology

[0007] In view of this, the object of the present invention is to provide a DMB video push method based on multiple description coding, which uses multiple description coding technology to improve the instability and long delay of the low bit rate channel push video of the DMB system, The purpose is to make the receiving end play a lower-quality but acceptable video in a short period of time, so as to reduce the video buffering time of the receiving end and improve user experience

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