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Method for improving real-time video playing quality

A playback quality, real-time video technology, applied in the field of network video stream transmission, can solve problems such as packet loss, video transmission delay and poor picture quality, so as to improve video playback quality, ensure real-time performance and accuracy, and reduce the number of freezes Effect

Active Publication Date: 2017-07-18
北京金风易通科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method for improving the quality of real-time video playback, which solves the problems of packet loss, video transmission delay and poor picture quality in the existing real-time streaming media technology

Method used

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  • Method for improving real-time video playing quality
  • Method for improving real-time video playing quality
  • Method for improving real-time video playing quality

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0051] First, experiment preparation

[0052] At present, most of the NVR / DVR manufacturers provide SDK, through which the developer can obtain the real-time video data of the camera, and the specific video transmission process and decoding process need to be implemented independently by the developer. The implementation phase of the method of the present invention is from The NVR / DVR obtains the video data, carries out the package transmission, packs, decodes and plays at the playback end, and the algorithm implementation does not need to rely on the modification or update of the NVR / DVR manufacturer.

[0053] The larger the resolution of H.264 video, the larger the NALU in the video stream. In order to reflect the effects of the present invention in real-time video playback of different resolutions, in the verification process, the video stream generated by the Haikang camera in real time is used as the experimental data. The encoding information of this stream is: 15fps, 1920*1...

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Abstract

The invention discloses a method for improving real-time video playing quality. The method comprises the process of setting a sliding window, wherein the sliding window is to map the time range as a number of a RTP packet, the sliding window is to wait a packet which has small serial number and but is delayed to receive within a certain time range, and to map the time range as the span between the packets; the sliding window comprises two ranges: a left boundary Wl and a right boundary Wr; the sliding window divides the whole numerical range into three parts; when the difference between the serial number of the unreceived packet and the serial number of the currently received packet falls in different ranges, the method enters different handling processes. The real-time video playing quality is obviously improved by use of the method disclosed by the invention.

Description

Technical field [0001] The invention belongs to the technical field of network video stream transmission, and relates to a method for improving the quality of real-time video playback. Background technique [0002] With the rapid development of multimedia technology and network technology, the media information transmitted on the network has gradually transitioned from the original text and pictures to multimedia formats such as sound and video, and the transmission method has also changed from downloading and then playing to a stream of downloading and playing. Media methods, streaming media technology has become the mainstream technology for network transmission of multimedia data. The main idea is to divide multimedia files such as video and audio into compressed packages through a special compression method, which are continuously and real-time transmitted from the server to the user's computer; the user does not need to download the entire file, only a short start delay It ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/44H04N21/6437H04L29/06
CPCH04N21/44008H04N21/6437H04L65/75H04L65/65
Inventor 孙钦东姚强张景鹏王艳王倩
Owner 北京金风易通科技有限公司
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