Multi-channel video unicode rate control method

A rate-controlled, multi-channel technology used in radio, television and video surveillance

Inactive Publication Date: 2010-10-06
ZHENJIANG TANGQIAO MICROELECTRONICS
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Problems solved by technology

[0009] The present invention mainly aims at how a multi-channel video encoder effectively allocates channel bandwidth to each video frame of each channel according to the difference of multi-channel

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Embodiment Construction

[0041] Such as figure 1 Among them, multiple video sources enter multiple video encoders in parallel, and each encoder is responsible for encoding one video, and the generated bit stream is input to the multiplexer, and the multiplexer encapsulates multiple basic bit streams into a transport stream, and then passes through the channel sent to the receiving end. This application environment is more common in traditional digital TV broadcasting.

[0042] figure 2In this method, multiple video sources are interleaved and then input to a multi-channel video encoder. After the synthesized video is deinterleaved, the encoder encodes frame by frame. The bit stream generated by each channel of the corresponding encoder is input to the multiplexer, and the multiplexer encapsulates multiple basic bit streams into a transport stream, and then sends it to the receiving end through the channel. Due to the introduction of multi-channel encoders, this application environment saves a lot...

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Abstract

The invention relates to a multi-channel video unicode rate control method, which comprises the following steps: collecting code statistics information, allocating multi-channel bit, allocating single-channel variable code rate bit, and calculating quantization parameter. The method not only can allocate bit to each channel according to the complexity of the video source image content, ensure that the final multiplexing bit stream of each channel, satisfy the requirement of the band width, reduce the difference of the video quality of each channel, and can ensure the stability of the mage quality inside the channel since each channel by adopting the variable code rate technology. In addition, the method is completely based on the feedback way, the analysis of the image complexity is basedon the statistics information produced during the coding process, so an additional image complexity analysis module is not required, and the cost can be reduced.

Description

technical field [0001] The invention relates to a joint code rate control method of multi-channel video coding, which is applied to the field of video image coding, and can be applied to multi-channel video coding in the fields of radio and television and video monitoring. Background technique [0002] With the development of network communication technology and large-scale integrated circuit technology, digital video coding technology is widely used in radio and television, network television, video surveillance, video conferencing and other fields. In the above-mentioned applications, the multi-channel video encoder is mainly responsible for the compression, encapsulation and transmission of multiple input videos. How to dynamically and effectively allocate network bandwidth among multiple videos according to video content, and reasonably adjust the encoding bit rate of multiple videos is a key factor affecting the performance of video servers. [0003] When multiple vide...

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Application Information

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IPC IPC(8): H04N7/24H04N7/26H04N7/58H04N19/124H04N19/134H04N19/176
Inventor 高伟孙翼章勇
Owner ZHENJIANG TANGQIAO MICROELECTRONICS
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