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Transmission method for quickly previewing H.264 coded picture

A transmission method and coded frame technology, which is applied in the field of rapid preview of H.264 coded frame transmission, can solve problems such as the inability to establish a high-speed 3G network, achieve good video viewing effects, ensure real-time performance, and ensure video quality effects

Inactive Publication Date: 2012-07-04
上海讯垒网络科技有限公司
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  • Abstract
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Problems solved by technology

[0004] In this regard, because my country's 3G network construction does not have a solid foundation like developed countries, furthermore, my country's vast territory also determines that my country cannot build high-speed 3G networks like Japan, South Korea and other countries, that is to say, only Improvements in the method of transmission

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  • Transmission method for quickly previewing H.264 coded picture
  • Transmission method for quickly previewing H.264 coded picture
  • Transmission method for quickly previewing H.264 coded picture

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Embodiment Construction

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. The specific embodiments described here are only used to explain the present invention, and are not used to limit the protection scope of the present invention.

[0021] figure 2 A flow chart showing a method for rapidly realizing previewing transmission of H.264 coded frames according to the present invention. Specifically, it includes step S201: encoding video stream samples, and step S202: sending I frames at fixed intervals. In the prior art, encoding in the H.264 format will produce several I-frames and several P-frames, wherein one I-frame and several P-frames together form a group of pictures (abbreviated as GOP), because in order to enable the client terminal Accept I frames as soon as possible. Those skilled in the art understand that the video acquisition device of the server first encodes the video stream samples, and gene...

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Abstract

The invention discloses a transmission method for quickly previewing an H.264 coded picture. A video stream is sampled and coded to generate the coded picture. The coded picture comprises a plurality of I pictures and a plurality of P pictures corresponding to the I pictures, wherein the I pictures are preferably generated and transmitted, and the data of each I picture is transmitted at a fixed time interval T until the data of all the I pictures of the video stream is transmitted; the P pictures are transmitted in a time bucket with an idle network bandwidth between the transmission of every two I pictures; and a large coded picture is divided into a plurality of data packets for transmission. The hysteresis phenomenon of the transmission of the I pictures is avoided, the real-time performance of the transmission of the I pictures is ensured, and a client can most quickly generate a preview picture.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a video frame transmission system, and in particular to a transmission method for quickly realizing the preview of H.264 coded frames. Background technique [0002] People in the information age today can use their mobile phones and other client terminals to obtain video viewing through the 3G network every day. In the current technology, when transmitting video data in the 3G network, in order to reduce the amount of data, encoding technology is required to provide compression processing. , the processed video stream consists of a series of coded frames, mainly: I frame, which is an image generated without reference image coding as a reference, called ICP (Intra Coded Pictures, internal coded frame); P frame, The image generated by motion compensation prediction based on the latest I picture or P picture is called PCP (Predictive Coded Pictures, predictive coded fr...

Claims

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Application Information

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IPC IPC(8): H04N21/234H04N21/2381H04N21/643
Inventor 王洪波沈方凯王伟君
Owner 上海讯垒网络科技有限公司
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