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

A data transmission method and technology of video equipment, applied in television, closed-circuit television system, selective content distribution, etc., can solve problems such as video freeze, link congestion, packet loss, etc., to reduce the probability of I frame collision and smooth Network data, reduce the effect of video frame loss

Active Publication Date: 2022-03-25
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 and related device based on multiple front-end video equipment
  • Data transmission method and related device based on multiple front-end video equipment
  • Data transmission method and related device based on multiple front-end video equipment

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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 diagram 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 forward...

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Abstract

The present application discloses a data transmission method based on multiple front-end video devices and related devices. The data transmission method includes: the back-end device judges whether multiple key frames are received within a preset time range; At least part of the multiple key frames corresponding to the key frame generation time of the collision front-end video device are adjusted so that the back-end device receives the key frames evenly; Sending time: sending the key frame timing adjustment command to the corresponding front-end video device according to the sending time. Through the above method, the present application can enable the backend device to receive I frames evenly within the preset time range, so as to reduce the probability of I frame collision.

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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Patent Type & Authority Patents(China)
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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