CN103248964B - Based on the Vehicular video transmission system of RTP/RTCP - Google Patents
Based on the Vehicular video transmission system of RTP/RTCP Download PDFInfo
- Publication number
- CN103248964B CN103248964B CN201310117793.0A CN201310117793A CN103248964B CN 103248964 B CN103248964 B CN 103248964B CN 201310117793 A CN201310117793 A CN 201310117793A CN 103248964 B CN103248964 B CN 103248964B
- Authority
- CN
- China
- Prior art keywords
- video
- module
- car
- network
- mounted terminal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Compression Or Coding Systems Of Tv Signals (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
A kind of Vehicular video transmission system based on RTP/RTCP, it is characterized in that, jointly be built into the whole Vehicular video transmission system of the present invention by Internet Transmission control module and some N number of transportable clients, each car-mounted terminal forms VANET network, described client is the car-mounted terminal be placed in car, does is each car-mounted terminal provided with Intel? IPP storehouse, described Vehicular video transmission system is Client/Server.The present invention is by the Vehicular video transmission system of design based on RTP/RTCP, consider that video compression parameter difference has impact to final transmission quality, dynamically according to the packet loss of systems axiol-ogy, regulate video compression quality in real time, present system dynamic adjustment video transmission quality.
Description
Technical field
The present invention relates to a kind of Video transmission system of vehicular wireless network communication technical field.
Background technology
Along with the development of communications and transportation and information industry, the various videos based on vehicle network use and get more and more people's extensive concerning.Vehicle safety DAS (Driver Assistant System), unmanned truck system, the real-time road supervisory control system exceeded outside sighting distance, real-time voice video communications system and multimedia recreation information sharing system etc. ensuring traffic safety, improve traffic efficiency, enrich people's life etc. in have great importance.The structure of these systems all relates to the coding of video on vehicle network and transmission by essential.Video technique, in cable network and wireless network, has achieved the successful commercialization of the application such as video conference, video request program.In vehicular wireless network communication, how to realize smoothness between car and car transmission of video and video are shared, and are focuses of current vehicular wireless network research field.
First, vehicle network communication is extremely unstable.Object, to the complexity etc. of the high-speed mobile characteristic of the reflection of signal, vehicle network, road structure and roadside environments, makes the vehicle self-organizing network characteristic of channel be different from the Adhoc network of general static state or low rate motion.The internodal data transmission quality of vehicle self-organizing network depends on specific transmitting scene.In view of the in-and-out communication characteristic of vehicle self-organizing network, to carry out live video communication, the video quality obtained is inevitable to be changed along with channel.If the video quality that video compressing module exports is better, when channel degenerates, often easily there is channel congestion.Otherwise video compression output video is second-rate, is adapted at the situation that channel is unstable or poor, but the bandwidth resources of channel good time cannot be made full use of.
Secondly, frame of video also has its exclusive characteristic.The compression of video is in units of GOP.Different frame types is contained: I frame, P frame and B frame inside GOP.Lose loss that dissimilar frame brings and different.The loss of I frame, can impact being correctly decoded in whole GOP.In order to cannot decoding of reducing that the I frame lost causes as far as possible, common solution reduces the length of GOP.But GOP length reduces, and I frame increases, the efficiency of compression reduces, and the code check of generation can become large, causes data quantitative change large.Data quantitative change is large, and corresponding UDP transmission package also increases, if run into the situations such as network congestion, increases number of dropped packets potentially again.Thus, the length of packet loss and GOP is " chicken-egg " antinomy.If weigh the parameter of network transmission channel stability using packet loss as one, on one's own initiative the code check of GOP size and video or other compression parameters are regulated, the laser propagation effect of a relative ideal can be obtained.
Below the filling to part term in this specification:
The Adhoc network peer-to-peer multi-hop mobile network of interim fast automatic networking (can)
GOP(GroupOfPicture, picture group, a GOP is exactly one group of continuous print picture)
The abbreviation of UDP(UserDatagramProtocol, do not belong to connecting-type agreement, thus there is resource consumption little, the advantage that processing speed is fast, so audio frequency, video and general data use UDP more when transmitting usually, even if because they lose one or two packet once in a while, also can not have much impact to reception result.The Main Function of udp protocol is form network traffic data being compressed into packet.）
DirectShow(DirectShow is a kind of open development environment, can customize the assembly of oneself as required)
VANET(VehicularAd-hocNETwork, vehicle self-organizing network)
IntelIPP storehouse (" IntelIntegratedPerformancePrimitives " is a set of cross-platform software function storehouse, it provides multimedia function widely, such as audio decoder, image procossing, signal transacting, compress speech and encryption mechanism)
NS2(NS2 is a simulation software, the instrument that can emulate communication network protocol)
Above-mentioned term itself has been content well known in the art, and therefore related content should not regard as insufficient disclosure.
Summary of the invention
The invention provides a kind of Vehicular video transmission system based on RTP/RTCP, by the packet loss dynamically according to systems axiol-ogy, regulate video compression quality in real time, present system dynamic adjustment video transmission quality.
For achieving the above object, present system technical scheme is characterized by:
A kind of Vehicular video transmission system based on RTP/RTCP, it is characterized in that, jointly be built into the whole Vehicular video transmission system of the present invention by Internet Transmission control module and some N number of transportable clients, each car-mounted terminal forms VANET network, described client is the car-mounted terminal that can be placed in car, each car-mounted terminal is provided with IntelIPP storehouse, and described Vehicular video transmission system is Client/Server.Each car-mounted terminal comprises 5 function sub-modules altogether, they are video acquisition module, coding and decoding video module, message processing module, video playback module, file storage module, these function sub-modules are all structured on described IntelIPP storehouse, wherein: described video acquisition module is used for the collection of video data, video original data is obtained from sensor hardware equipment, or obtain video original data from file video flowing etc., video acquisition module respectively with video playback module, video encoding module connects, for the compression coding before local display video file or transmission,
Described coding and decoding video module is for reducing transmitting video data redundancy;
Described message processing module, for completing preliminary treatment to video acquisition module data and video compression computing;
Described video playback module is connected with video acquisition module and Video decoding module respectively, for playing the local video data data gathered of display or the decoded video data of other mobile car-mounted terminal come from VANET Internet Transmission;
Described file storage module, for storing the local video data gathered and the video data come from the reception of other car-mounted terminals, is used further to send transmitting video files to other receiving terminals.
Internet Transmission control module of the present invention, is structured on VANET, and Internet Transmission control module is used for the video data transmission between movable car mounted terminal and car-mounted terminal.This Internet Transmission control module comprises dynamic regulating video transmission quality algorithm software module, be characterized by: this software module is that packet loss Network Based and video sequence complexity carry out dynamic regulating video transmission quality, the video quality of assessment video after transmitting through simulation vehicle network out, for the video sequence of different complexity on affecting the factor GOP of video transmission quality, compression quantization parameter qp, code check bitrate, packet error rate test, show that optimal parameter combines.
Described dynamic regulating video transmission quality algorithm software module, its method implemented, comprises the following steps,
First, the obtaining step of network packet loss rate, for obtaining current network packet loss;
Then, video sequence complexity determining step, for distinguishing the motion intense degree of video sequence;
Finally, dynamic conditioning quality step, for according to network packet loss rate, network quality is divided into Three Estate: good, poor, very poor, before this frame of coding, if network quality is from a state variation to another state, according to the sequence of video, adjustment coding parameter, to meet the optimal compression parameter under this network condition.
The present invention is by the Vehicular video transmission system of design based on RTP/RTCP, consider that video compression parameter difference has impact to final transmission quality, dynamically according to the packet loss of systems axiol-ogy, regulate video compression quality in real time, reach the object that final transmission quality promotes.Innovative point and beneficial effect:
(1) complete vehicle network Video Transmission Scheme and system is devised.Make full use of the outstanding compression performance of H.264 encoder and the powerful computing capability of dual core processor, achieve the functions such as onboard system video acquisition, coding, decoding, transmission.
(2) according to the packet loss of vehicle network, for different network condition, the compression parameters of optimization is provided to configure, and can dynamic adjustments video transmission quality.Bandwidth cannot be made full use of or data volume is excessive causes the drawbacks such as network congestion when effectively overcoming the lower network dynamic change of single compressed parameter.
Accompanying drawing explanation
Fig. 1 is the theory diagram of the whole Vehicular video transmission system of the present invention.
Fig. 2 is protocol stack hierarchy chart of the present invention.
Fig. 3 video acquisition flow chart.
Fig. 4 coding module flow chart.
Fig. 5 decoder module flow chart.
The structural representation of Fig. 6 car-mounted terminal hardware components EC5-1719CLDNA development board and external interface.
Fig. 7 is software section car-mounted terminal data flow schematic diagram of the present invention.
Fig. 8 is transmission of video link.
Fig. 9 is adaptive video quality algorithm flow process.
Embodiment
below in conjunction with accompanying drawing, technical solution of the present invention is described further.
As shown in Figure 1, Internet Transmission control module and some N number of transportable clients have been built into the whole Vehicular video transmission system of the present invention jointly, each car-mounted terminal forms VANET network, described client is the car-mounted terminal be placed in car, described each car-mounted terminal is provided with IntelIPP storehouse, and described Vehicular video transmission system is Client/Server.Each car-mounted terminal comprises 5 function sub-modules altogether, they are video acquisition module, coding and decoding video module, message processing module, video playback module, file storage module, these function sub-modules are all structured on described IntelIPP storehouse, wherein: described video acquisition module is used for the collection of video data, video original data is obtained from sensor hardware equipment, or obtain video original data from file video flowing etc., video acquisition module respectively with video playback module, video encoding module connects, for the compression coding before local display video file or transmission.Collecting flowchart, as shown in Figure 3, is developed by DirectShow, and the realization of video acquisition is not the contribution part of technical solution of the present invention to prior art.
Described coding and decoding video module is for reducing transmitting video data redundancy, excessive to solve the video data volume, the problem that the VANET network bandwidth cannot meet.Coding and decoding video module construction, on IntelIPP storehouse, comprises coding module and decoder module two parts.
The basic procedure of coding module work as indicated at 4.Developing instrument IPP and UMC that video encoding module provides based on Intel Company.Data cached in the data queue collected by SampleGrabber carries out H.264 compression coding, to be applicable to the VANET network bandwidth limited at present.
Decoder module flow process as shown in Figure 5.After user receives frame data from VANET network, extract the information such as the size of image, color format, encoder type, initialization decoding environment, calls decoding functions, just can obtain decoded frame, image is play for video playback module by the VideoRenderer provided finally by UMC.
More than coding, decode procedure are all belong to prior art, and encoding and decoding technique itself is not the contribution part of technical solution of the present invention to prior art.
Described message processing module, for completing preliminary treatment to video acquisition module data and video compression computing.
Described video playback module is connected with video acquisition module and Video decoding module respectively, for playing the local video data data gathered of display or the decoded video data of the other side's (other) mobile car-mounted terminal come from VANET Internet Transmission.
Described file storage module, for storing the local video data gathered and the video data come from the reception of the other side's (other) car-mounted terminal, is used further to send transmitting video files to other receiving terminals.
Described Internet Transmission control module, is structured on VANET, and Internet Transmission control module is used for the video data transmission between movable car mounted terminal and car-mounted terminal, supports clean culture, multicast pattern.The transport layer of Internet Transmission control module have employed RTP/RTCP real-time Transmission and control protocol and realizes data feedback in VANET network two kinds of transmission modes and control.The transmission of video function of this module adopts RTPMulticasting multicast to have root model realization.All clients add identical multicast address, bind identical local UDP port number A for receiving multicast data.Server end (i.e. some car-mounted terminals) binds another one port numbers B, for carrying out exchanges data with all clients.Like this when customer end A sends data to server end slogan B, server sends to multicast address and port A after receiving, and clients all like this can receive the video data that customer end A transmits.
In addition, described Internet Transmission control module comprises dynamic regulating video transmission quality algorithm software module, be characterized by: this software module is that packet loss Network Based and video sequence complexity carry out dynamic regulating video transmission quality, the video quality of assessment video after transmitting through simulation vehicle network out, for the video sequence of different complexity on affecting the factor GOP of video transmission quality, compression quantization parameter qp, code check bitrate, packet error rate test, show that optimal parameter combines.
The method that this software module is implemented, is characterized in that, comprise the following steps,
First, the obtaining step of network packet loss rate, for obtaining current network packet loss;
Then, video sequence complexity determining step, for distinguishing the motion intense degree of video sequence;
Finally, dynamic conditioning quality step, for according to network packet loss rate, network quality is divided into Three Estate: good, poor, very poor, before this frame of coding, if network quality is from a state variation to another state, according to the sequence of video, adjustment coding parameter, to meet the optimal compression parameter under this network condition.
below provide specific embodiment and introduce technical solution of the present invention further.
The Vehicular video transmission system performing step that the present invention is based on RTP/RTCP is as follows:
(1) car-mounted terminal hardware architecture
Each car-mounted terminal should have stronger disposal ability, to meet the process of the sensing data of video compression computing and video acquisition module.The present embodiment selects the EC5-1719CLDNA development board produced by Yan Xiang company, EC5-1719CLDNA is the high-performance single-borad computer of a employing Intel notebook computer chipset 945GM design, processor is IntelCore2Duo, adopts bandwidth to reach the direct media interface DMI of 10Gb/s between the bridge of north and south.Its feature is that high-performance, low-power consumption and expansion card interface are abundant.Based on this development board, the equipment such as internal memory, storage, display LCD, touch-screen, camera, wireless network card, microphone can also be extended as required, as shown in Figure 6.
Video acquisition module obtains video data from hardware device, and these hardware devices comprise capture card, tv receiver card, camera, video tape recorder etc.
(2) vehicle terminal software framework
Car-mounted terminal belongs to common C/S framework, that is: be made up of video sending end and video receiver two parts.Unlike, each car-mounted terminal node of the present invention belongs to peer node, both can as video transmit leg, also can as the recipient of video, the existing module of each vehicle-mounted terminal system is by first-class collection video of making a video recording, encoded video, the real-time video also having module (thread) to be used to accept the other side's car-mounted terminal to transmit, and play it.Car-mounted terminal, according to function, can be divided into video acquisition module, video encoding module, Internet Transmission control module, Video decoding module, video playback module, as shown in Figure 7.
The present invention adopts DirectShow to realize video acquisition.
Internet Transmission control module is structured on VANET.The transport layer of Internet Transmission control module have employed RTP/RTCP real-time Transmission and control protocol and realizes data feedback on VANET network two kinds of modes and control.
Coding and decoding video module construction is on IntelIPP storehouse, and Video coding and decoding can realize based on this encoding and decoding storehouse of the IPP of Intel.
The transmission of video of whole car-mounted terminal, according to the flow direction of video data and the technology that adopts, can form link as shown in Figure 8.
The method step that the present invention is based on network packet loss rate and video sequence complexity dynamic regulating video transmission quality is as follows:
(1) emulation platform building and parameter combinations obtain
On the basis of these two instruments of NS2 and Evalvid, for the expansion of IntelIPPH.264 encoder, the video quality of assessment video after transmitting through simulation vehicle network out.Gilbert-Elliott error model is adopted to simulate vehicle network channel error.For the video sequence of different complexity on affecting the factor GOP of video transmission quality, compression quantization parameter qp, code check bitrate, packet error rate test, show that optimal parameter combines.
(2) adaptive video quality algorithm flow process
1) network channel is divided into three types: GOOD, BAD, WORSE.
When packet loss is lower than 1%, definition channel status is GOOD;
When packet loss is greater than 1%, be less than 10%, definition channel status is BAD;
When packet loss is greater than 10%, definition channel status is WORSE.
The channel conditions of vehicle network constantly switches along with the change of environment between these three kinds of channel types.
2) at set intervals
, calculate packet loss.
If channel packet loss is lower than 1%, by three kinds of sequence complexities, provide high-quality video parameter combinations, as table 1;
If packet loss meets [1%-10%), by three kinds of sequence complexities, provide IPPPP sequence, GOP=5, as table 2;
Suppose that packet loss reaches 10% even higher, show that vehicle is due to apart from the factor such as excessive, or arrived certain road dead angle, channel is impaired.Therefore, now adopt the GOP of IBBBP to combine, as table 3, reduce code check simultaneously, now, all can not affect the decoding of the frame of transmission success after all B frame packet losses, compared to several combination above, comprehensive video quality can promote to some extent.
Three kinds of parameter combinations of reference are respectively as table 1,2,3.Detailed algorithm flow is as Fig. 9.
The video compression parameter combinations that table 1 packet loss is less than 1%
The video compression parameter combinations of table 2 packet loss 1%-10%
The video compression parameter combinations that table 3 packet loss is greater than 10%
Claims (1)
1. the Vehicular video transmission system based on RTP/RTCP, it is characterized in that, jointly built by Internet Transmission control module and several transportable clients, each car-mounted terminal forms VANET network, described client is the car-mounted terminal be placed in car, each car-mounted terminal is provided with IntelIPP storehouse, and described Vehicular video transmission system is Client/Server;
Each car-mounted terminal comprises 5 function sub-modules altogether, they are video acquisition module, coding and decoding video module, message processing module, video playback module, file storage module, these function sub-modules are all structured on described IntelIPP storehouse, wherein: described video acquisition module is used for the collection of video data, video original data is obtained from sensor hardware equipment, or obtain video original data from file video flowing etc., video acquisition module respectively with video playback module, video encoding module connects, for the compression coding before local display video file or transmission,
Described coding and decoding video module is for reducing transmitting video data redundancy;
Described message processing module, for completing preliminary treatment to video acquisition module data and video compression computing;
Described video playback module is connected with video acquisition module and Video decoding module respectively, for playing the local video data gathered of display or the decoded video data of other mobile car-mounted terminal come from VANET Internet Transmission;
Described file storage module, for storing the local video data gathered and the video data come from the reception of other car-mounted terminals, is used further to send transmitting video files to other receiving terminals;
Described Internet Transmission control module, is structured on VANET, and Internet Transmission control module is used for the video data transmission between movable car mounted terminal and car-mounted terminal; This Internet Transmission control module comprises dynamic regulating video transmission quality algorithm software module, be characterized by: this software module is that packet loss Network Based and video sequence complexity carry out dynamic regulating video transmission quality, the video quality of assessment video after transmitting through simulation vehicle network out, for the video sequence of different complexity on affecting the factor GOP of video transmission quality, compression quantization parameter qp, code check bitrate, packet error rate test, show that optimal parameter combines;
Described dynamic regulating video transmission quality algorithm software module, its method implemented, comprises the following steps,
First, the obtaining step of network packet loss rate, for obtaining current network packet loss;
Then, video sequence complexity determining step, for distinguishing the motion intense degree of video sequence;
Finally, dynamic conditioning quality step, for according to network packet loss rate, network quality is divided into Three Estate: good, poor, very poor, before coding present frame, if network quality is from a state variation to another state, according to the sequence of video, adjustment coding parameter, to meet the optimal compression parameter under this network condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310117793.0A CN103248964B (en) | 2013-04-07 | 2013-04-07 | Based on the Vehicular video transmission system of RTP/RTCP |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310117793.0A CN103248964B (en) | 2013-04-07 | 2013-04-07 | Based on the Vehicular video transmission system of RTP/RTCP |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103248964A CN103248964A (en) | 2013-08-14 |
| CN103248964B true CN103248964B (en) | 2016-04-06 |
Family
ID=48928145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310117793.0A Active CN103248964B (en) | 2013-04-07 | 2013-04-07 | Based on the Vehicular video transmission system of RTP/RTCP |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103248964B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3117603B1 (en) * | 2014-03-12 | 2020-05-13 | Robert Bosch GmbH | System and method for transmitting camera-based parameters without a dedicated back channel |
| CN104010166B (en) * | 2014-06-05 | 2018-12-14 | 厦门雅迅网络股份有限公司 | A kind of method of mobile unit wireless remote video monitoring Adaptive Transmission |
| CN105357590A (en) * | 2014-08-22 | 2016-02-24 | 中兴通讯股份有限公司 | Method and device for achieving terminal multimedia broadcast |
| CN104394486B (en) * | 2014-11-26 | 2018-03-13 | 中标软件有限公司 | A kind of video stream processing method and device based on cloud desktop |
| CN105730341B (en) * | 2016-03-11 | 2019-06-07 | 广东钛马车联网信息科技有限公司 | A kind of front truck visual field checking device, system and method |
| CN108259808B (en) * | 2018-01-31 | 2021-01-08 | 维沃移动通信有限公司 | Video frame compression method and mobile terminal |
| CN108650487A (en) * | 2018-03-28 | 2018-10-12 | 山东科技大学 | Wireless video multi-hop transmission system under a kind of car networking environment |
| CN110365985A (en) * | 2019-06-03 | 2019-10-22 | 西安万像电子科技有限公司 | Image processing method and device |
| CN111986348A (en) * | 2020-07-27 | 2020-11-24 | 广州亚美智造科技有限公司 | Video and vehicle-mounted video cyclic caching method and device and computer equipment |
| CN115361571A (en) * | 2022-08-04 | 2022-11-18 | 武汉依迅北斗时空技术股份有限公司 | Playing method and device of cloud storage video data |
| CN116233371A (en) * | 2023-05-08 | 2023-06-06 | 中国重汽集团济南动力有限公司 | Vehicle remote driving video transmission method and system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101198042A (en) * | 2007-12-26 | 2008-06-11 | 广东威创视讯科技股份有限公司 | Code rate control method for video coding and video data emission device |
| CN101588595A (en) * | 2009-07-07 | 2009-11-25 | 董志 | Method for dynamically regulating data transfer rate in wireless application service system |
| CN102480421A (en) * | 2010-11-30 | 2012-05-30 | 同济大学 | Vehicle network data transmission method and system thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1821442A4 (en) * | 2004-11-17 | 2011-07-20 | Sharp Kk | Transmitter |
-
2013
- 2013-04-07 CN CN201310117793.0A patent/CN103248964B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101198042A (en) * | 2007-12-26 | 2008-06-11 | 广东威创视讯科技股份有限公司 | Code rate control method for video coding and video data emission device |
| CN101588595A (en) * | 2009-07-07 | 2009-11-25 | 董志 | Method for dynamically regulating data transfer rate in wireless application service system |
| CN102480421A (en) * | 2010-11-30 | 2012-05-30 | 同济大学 | Vehicle network data transmission method and system thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103248964A (en) | 2013-08-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103248964B (en) | Based on the Vehicular video transmission system of RTP/RTCP | |
| CN105392020B (en) | A kind of internet video live broadcasting method and system | |
| CN101282359B (en) | Method, apparatus and medium for providing multimedia service considering terminal capability | |
| CN101123730B (en) | Apparatus and method for transmitting moving picture stream using bluetooth | |
| CN100568966C (en) | A kind of network transfer method of audio/video data | |
| CN103813213A (en) | Real-time video sharing platform and method based on mobile cloud computing | |
| CN101909208A (en) | Video wireless transmission control method suitable for CDMA2000 | |
| CN101924914A (en) | Method for switching television channels and system and device thereof | |
| CN103686221A (en) | Audio/video smooth broadcasting method adaptive to public wireless network | |
| CN109618188A (en) | Coding, retransmission method, device, equipment and the storage medium of video data | |
| CN204929081U (en) | Video transmission device | |
| Smirnov et al. | Real-time rate control of webrtc video streams in 5g networks: Improving quality of experience with deep reinforcement learning | |
| CN103428175A (en) | Real-time voice intercom system based on heterogeneous mobile IP networks | |
| WO2007051343A1 (en) | A bandwidth adaptive stream medium transmission system of a stream medium serving system and a method thereof | |
| Haiyan et al. | Application of SVGA video real-time transmission technology in music education information communication | |
| CN116980392A (en) | Media stream processing method, device, computer equipment and storage medium | |
| CN103428493A (en) | Light wireless transmission system for high-definition videos | |
| CN103686208B (en) | Video cloud computing transmitting method | |
| CN114470745A (en) | Cloud game implementation method, device and system based on SRT | |
| CN101350766B (en) | Stream media server system based on VSAT | |
| CN115150367A (en) | Data layered transmission method, device and system | |
| CN101990082B (en) | Method and device for implementing video telephone | |
| Zhang et al. | Improving the QoE of Real-time Video Transmission: A Deep Lossy Transmission Paradigm | |
| Yuan | Video data wireless transmission method based on cross-layer bitrate adaptation and error control | |
| Yang et al. | Improve IoT streaming QoS by determining the message propotion in CoAP |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |