Smoothing Method of Network Sending Rate of Video Image Data
A technology of sending rate and video image, applied in the field of video image transmission, can solve the problems of lack of real-time sending rate, lack of dynamic real-time adjustment, need, etc., to achieve smooth transmission, ensure reliability, and avoid instantaneous overshoot.
Active Publication Date: 2018-11-13
HANGZHOU HIKVISION DIGITAL TECH
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
This method can buffer data to a certain extent, and then achieve network smoothness, but this method also has obvious deficiencies, for example, it needs two memory buffers, lacks dynamic real-time adjustment, smooths only according to a preset threshold, etc., and lacks real-time send rate strain
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0063] In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings and examples.
[0064] Such as figure 2 As shown, the method for smoothing the network transmission rate of video image data in the present invention mainly includes the following steps.
[0065] Step 1. In the current video recording sampling period, write the video code stream into the buffer.
[0066] Among them, you can refer to figure 1 As shown, it is the process that the video coder realizes writing the video code stream into the buffer by writing the pointer, and the process that the video coder writes the video code stream into the buffer by writing the pointer is existing in the art, and is no longer here repeat.
[0067] The video recording sampling period is the period used to adjust the network sending rate of video image data. Its fineness has an ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a smoothing method of a network transmission speed of a video image data. The method comprises the following steps: writing a video code stream into a buffer area; calculating code stream change of a video encoder; according to a relation between the size of video data in a current buffer area and a time delay allowed by a video transmission network, obtaining a speed to be transmitted, and comparing the speed to be transmitted with video transmission network bandwidth and a maximum fluctuation value of the video code stream in the video transmission network so as to determine an actual transmission speed; and if duration for transmitting the video data in the buffer area by use of the actual transmission speed exceeds a sampling period, according to the size of the data of the current buffer area and the time delay allowed by the network, adjusting a transmission speed of a next period. According to the invention, the network transmission speed of the video image data can be smoothed continuously according to a desired direction, finally realizes smooth transmission of the video image data in the video transmission network, and accordingly, avoids the possibility of instant overshoot of network data, data loss, network congestion and even network paralysis.
Description
technical field [0001] The invention relates to the field of video image transmission, in particular to a video image smoothing method in the video image transmission process. Background technique [0002] In applications such as video surveillance and network video conferencing, video images need to go through acquisition, buffering, and network transmission from real-time acquisition to video image playback. [0003] Such as figure 1 As shown, after the video data collected by the video capture front end is encoded by the video encoder 1, the video encoder 1 stores the video data in the buffer 2 through the write pointer 11, and the network transmitter 3 transfers the video data to the buffer through the read pointer 31. The stored video data is read out and sent through the video transmission network 4 . Video encoder 1 maintains write pointer 11, and when write pointer 11 stores video data in buffer 2, the position of write pointer 11 in buffer 2 can be updated along w...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/647H04N19/146
Inventor 徐炳炎凌在龙
Owner HANGZHOU HIKVISION DIGITAL TECH