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Adaptive video coding control system and method

A technology of video coding and control system, which is applied in the field of video transmission and video coding, and can solve problems such as playback interruption

Active Publication Date: 2017-05-31
CHONGQING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0034] In view of this, the object of the present invention is to provide an adaptive video coding control system and a kind of adaptive video coding control method, which solves the problem of playback interruption during the playback of the adaptive streaming media system, and ensures the best video quality at the same time. quality

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  • Adaptive video coding control system and method

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Embodiment Construction

[0071] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0072] An adaptive video coding control system provided by the present invention, such as figure 1 As shown, the client 110 (the video receiver) is connected to the video server 109 (the video sender) through the packet switching network 108 .

[0073] The video server can be any computer equipped with a packet switching network (such as the Internet), and the operating system used can be Windows 7, Windows 8, Windows NT, Windows XP, Linux, Mac OSX.

[0074] The client can be any device that is equipped with a packet switching network interface and can use both wired and wireless access to the network, and can also be a smart phone. The device can use any operating system such as Linux, Android, Windows, iOS, etc.

[0075] The video feed is encoded or compressed by using an encoder on the server. The encoder encodes or compresses the vid...

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Abstract

The invention provides an adaptive video coding control system and method, and belongs to the technical fields of video transmission and video coding. According to the adaptive video coding control system and method, the real-time coding rate of a video is calculated through the arrangement of a controller according to the length of a playing buffer zone and the estimated value of available bandwidth of network, and then, a fragmentation request is transmitted to a video server through a fragment dispatching and handling unit according to the real-time coding rate and the length of playing buffer zone to request next fragment to be transmitted and the video grade of the fragment to further control the coding rate of the next video fragment transmitted by the video server, so that end-to-end bandwidth given from the video server to a client end provides the maximum video quality for a user, and under the situation that a TCP flow exists, bandwidth can be fairly distributed to a plurality of video flows, and the phenomenon that the video flows can share one same bottleneck channel can be guaranteed.

Description

technical field [0001] The invention relates to the technical field of video transmission and video encoding, in particular to an adaptive video encoding control system and an adaptive video encoding control method. Background technique [0002] In the streaming media system, the video server sends the video to the client, and the client temporarily stores the video content in a playback buffer queue defined by the client. [0003] When the playback buffer is empty, for example, the bandwidth suddenly drops, the client will pause the video playback to allow enough video content to be stored in the playback buffer. In this case, the client can resume video playback. This phenomenon Known as the rebuffering mechanism. The time and frequency of video rebuffering are the main factors affecting the quality of viewing for users. [0004] The goal of the adaptive streaming media system is to change the encoding bit rate of the video source in real time to adapt to the available b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/174H04N19/146H04N19/149
CPCH04N19/146H04N19/149H04N19/174
Inventor 李勇王彬
Owner CHONGQING UNIV OF POSTS & TELECOMM
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