Code stream transmission method and device

A streaming and code stream technology, applied in the field of video encoding and decoding, which can solve the problems of not being able to insert the frame cut immediately, and the user's waiting time being uncontrollable.

Inactive Publication Date: 2016-08-10
HANGZHOU HIKVISION DIGITAL TECH
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Problems solved by technology

[0006] However, the above-mentioned technical solution has the following problems: due to the fixed interval of queue-cutting frames (set as N1), after receiving the information that a new user cuts in, this scheme cannot insert a queue-cutting frame immediately, but waits for a fixed moment, that is, waits for It cannot be played until the next queue-cutting frame arrives
The wa

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  • Code stream transmission method and device
  • Code stream transmission method and device

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Embodiment Construction

[0030] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only, and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.

[0031] figure 1 A schematic diagram of the frame structure of the video image code stream in the prior art is shown.

[0032] In the frame structure of the video image stream in the prior art, an I frame and a plurality of ordinary P frames that have a reference relationship with it form an image set to form a group of pictures, referred to as GOP (Group of Pictures). Such as figure 1 As shown, two adjacent I frames (s...

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Abstract

The invention discloses a code stream transmission method and device. According to the method, when an access command sent by a user is received, a coder generates refreshing frames by coding; the refreshing frames and latter code stream are sent to a decoder with existing connection; I frames as the reference frames of the refreshing frames, the refreshing frames and the latter stream are sent to the decoder with newly built connection; and the reference frame of the refreshing frames obtained through inter-frame prediction is a first I frame in a current image set. According to the method and the device, rapid random access can be realized; the refreshing frames are generated by force; high instantaneous code rate fluctuation will not be caused; and the influence on the existing connection is low.

Description

technical field [0001] The invention belongs to the technical field of video coding and decoding, and in particular relates to a code stream transmission method and device capable of realizing fast random access. Background technique [0002] With the development of society and economy, people's need for safety is more and more urgent, and video surveillance technology is correspondingly applied more and more widely. Video surveillance equipment is required in public places, traffic roads, inside buildings and even inside private houses to provide fast and clear video images in real time or afterwards. [0003] At present, there are still many technical defects in the field of video surveillance technology. For example, in order to achieve a low bit rate, it is usually necessary to set the I frame interval to be very long. However, since decoding needs to find an I frame forward to start decoding, it means that the longer the I frame interval is, the more difficult it is d...

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Application Information

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IPC IPC(8): H04N19/103H04N19/177H04N19/42
Inventor 谢小燕浦世亮师恩义俞海
Owner HANGZHOU HIKVISION DIGITAL TECH
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