A frame data acquisition method of network streaming media

A technology for acquiring method and frame data, applied in transmission systems, electrical components, etc., which can solve the problems of increased data analysis and difficulty in application programs

Active Publication Date: 2019-08-23
清德智体(北京)科技有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

This makes subsequent data parsing difficult for the application

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  • A frame data acquisition method of network streaming media
  • A frame data acquisition method of network streaming media
  • A frame data acquisition method of network streaming media

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Embodiment Construction

[0026] The technical solutions of the present invention will be further described below in conjunction with the embodiments and the accompanying drawings.

[0027] The basic unit of an AVC video stream is an image frame. In order to be suitable for network transmission, a frame of image is divided into several image units. When the image data stream is passed from the operating system to the application program, the data format type adopted is byte array. The difference between TCP and UDP protocol transmission is that the byte array obtained by the UDP protocol can well maintain the boundary of the image unit, and the operating system can combine the IP packets belonging to the same image unit and pass it to each byte of the application. An array represents an image unit, but there is a risk of packet loss in the UDP protocol. The TCP protocol is a reliable transmission protocol, but when the TCP protocol is used for transmission, in the byte array received by the applicatio...

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Abstract

The invention discloses a frame data acquisition method of network streaming media, which is compatible with the streaming media data received by using two transmission protocols of TCP and UDP at the same time; and also sets the FrameMarker attribute for the image frame, which is used to record the image frame when it is stored in the storage body. Storage location to support the transfer of image data between memory and storage. By adopting the technical scheme of the present invention, the data storage structure of various communication protocols and data contents can be supported, and the streaming media frame data can be obtained and structured storage on the basis thereof.

Description

technical field [0001] The invention belongs to the technical field of network streaming media, and in particular relates to a frame data acquisition method of network streaming media. Background technique [0002] At present, the audio and video signals output by commercially available network cameras are often compressed in the H.264 / AVC format, and the compressed signal content is often converted into streaming media packets suitable for real-time transmission through the network using the RTP protocol. This streaming media transmission method is called H264Over RTP or AVC / RTP. [0003] When performing AVC / RTP transmission, there are two kinds of transmission protocols commonly used, TCP and UDP. The TCP protocol is conducive to maintaining the integrity of the data, while the UDP protocol can support multicast and multicast, each of which has its more suitable application occasions. [0004] The data transmitted through the TCP protocol and the data transmitted through...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06
CPCH04L65/75H04L65/65
Inventor 林嘉李成伟何莉
Owner 清德智体(北京)科技有限公司
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