Transmission method of adaptive streaming media in a wireless network environment

An adaptive streaming media, wireless network technology, applied in the multimedia field, can solve the problems of frequent bit rate jitter, the selection of the adjustment function is not too conservative, not too active and so on

Active Publication Date: 2020-10-27
XI AN JIAOTONG UNIV
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult to choose the adjustment function in this type of method to be neither too conservative nor too aggressive
And there are frequent bit rate jitters, and even switching back and forth between the highest bit rate and the lowest bit rate, etc.

Method used

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  • Transmission method of adaptive streaming media in a wireless network environment
  • Transmission method of adaptive streaming media in a wireless network environment

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Embodiment Construction

[0025] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] refer to figure 1 A method for transmitting adaptive streaming media in a wireless network environment comprises the following steps:

[0027] Step 1. Initialization: divide and represent the time slice of the video playback system as t; divide a complete video into smaller video segments with equal playback duration of 10-30 seconds (the specific duration can be given according to the actual situation), and then divide each The video clips are processed into several small video clips satisfying multiple different bit rate levels of the set R (the same video clip corresponds to several small video clips, and the playback content of several small video clips corresponding to the same video clip is the same, but clear degrees), the higher the code rate, the higher the definition, such as figure 1 as shown ( figure 1 Take 4 code rate l...

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Abstract

The invention discloses a transmission method for adaptive streaming media in a wireless network environment, and proposes an adaptive streaming media data transmission method that does not rely on throughput prediction and network prior knowledge, and formally describes the code rate selection problem as random optimization The problem is to add the user's individual needs into the bit rate selection decision, and aim to maximize the user experience quality. This method achieves optimization in many aspects such as video clarity and playback fluency, and reduces the decision-making calculation cost and The complexity further improves the real-time performance of bit rate level switching.

Description

technical field [0001] The invention belongs to the field of multimedia technology, and in particular relates to a transmission method of adaptive streaming media in a wireless network environment. Background technique [0002] The development of wireless communication technology and the popularization of mobile terminal equipment have promoted the rapid expansion of mobile data volume, especially mobile video data has occupied a dominant share in network traffic. Since the traditional streaming media technology cannot adapt to the time-varying network environment, it has been gradually replaced by the dynamic adaptive streaming media technology based on HTTP (Dynamic Adaptive Streaming over HTTP, DASH). figure 1 As the basic principle of DASH, firstly, a long-term video file is divided into several small clips of equal content length on the video server side, and then each small video clip is converted into a variety of different video bit rate levels, the same video conten...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/845H04N21/433H04L29/06
CPCH04L65/80H04N21/4331H04N21/8456H04L65/612
Inventor 赵鹏杨新宇王力权德奎蔺杰
Owner XI AN JIAOTONG UNIV
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