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Data transmission method based on multiple pieces of front-end video equipment and related device

A data transmission method and technology of video equipment, applied in the direction of television, closed-circuit television system, electrical components, etc., can solve problems such as packet loss, video freeze, link congestion, etc., to reduce video frame loss and reduce I-frame collision. Probabilistic, effect of smoothing network data

Active Publication Date: 2021-02-23
ZHEJIANG DAHUA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limited wireless uplink air interface resources, the greater the probability of I frame collision, the greater the probability of wireless uplink congestion, packet loss, and RTT increase, and even cause video freezes

Method used

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  • Data transmission method based on multiple pieces of front-end video equipment and related device
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  • Data transmission method based on multiple pieces of front-end video equipment and related device

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Embodiment Construction

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0032] see figure 2 , figure 2 It is a schematic flow chart of an implementation mode of a data transmission method based on multiple front-end video devices in this application, and the data transmission method includes:

[0033]S101: The backend device judges whether multiple I frames are received within a preset time range.

[0034] Specifically, the back-end device can be a network platform, for example, NVR (i.e. the storage and forwardin...

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Abstract

The invention discloses a data transmission method based on multiple pieces of front-end video equipment and a related device. The data transmission method comprises the steps that back-end equipmentjudges whether multiple key frames are received within a preset time range or not; if so, the key frame generation time of collision front-end video equipment corresponding to at least part of the plurality of key frames is adjusted, so that the back-end equipment uniformly receives the key frames; according to the adjusted key frame generation time, issuing time for issuing a key frame time sequence adjustment command is obtained; and the key frame time sequence adjustment command is issued to the corresponding front-end video equipment according to the issuing time. By means of the mode, theback-end equipment can uniformly receive the I frame within the preset time range, so that the collision probability of the I frame is reduced.

Description

technical field [0001] The present application belongs to the technical field of data transmission, and in particular relates to a data transmission method based on multiple front-end video devices and related devices. Background technique [0002] In the 5G / 4G / wireless environment, the back-end device can pull video streams to multiple front-end video devices (for example, IPC, etc.) at the same time. The more front-end video devices, the greater the probability that multiple key frames (i.e., I frames) will arrive at the back-end device via the network at the same time, resulting in I-frame collisions. I frame collisions appear as instantaneous network bursts on the network, specifically as figure 1 as shown, figure 1 It is a schematic diagram of the effect of an implementation mode of instantaneous network burst caused by I frame collision. Due to limited wireless uplink air interface resources, the greater the probability of I frame collision, the greater the probabil...

Claims

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Application Information

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IPC IPC(8): H04N7/18H04N21/647
CPCH04N7/181H04N21/64792
Inventor 张金玉王飞李翔邓志吉刘明叶奇方勇军
Owner ZHEJIANG DAHUA TECH CO LTD
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