CN110505503A - Audio-video is classified Adaptive Transmission system - Google Patents
Audio-video is classified Adaptive Transmission system Download PDFInfo
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- CN110505503A CN110505503A CN201910728479.3A CN201910728479A CN110505503A CN 110505503 A CN110505503 A CN 110505503A CN 201910728479 A CN201910728479 A CN 201910728479A CN 110505503 A CN110505503 A CN 110505503A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 111
- 230000003044 adaptive effect Effects 0.000 title claims abstract description 38
- 230000000694 effects Effects 0.000 claims abstract description 8
- 238000004891 communication Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000003032 molecular docking Methods 0.000 description 2
- 230000008447 perception Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011191 terminal modification Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
- H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/24—Monitoring of processes or resources, e.g. monitoring of server load, available bandwidth, upstream requests
- H04N21/2402—Monitoring of the downstream path of the transmission network, e.g. bandwidth available
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
- H04N21/26208—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists the scheduling operation being performed under constraints
- H04N21/26216—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists the scheduling operation being performed under constraints involving the channel capacity, e.g. network bandwidth
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
- H04N21/2662—Controlling the complexity of the video stream, e.g. by scaling the resolution or bitrate of the video stream based on the client capabilities
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Computer Networks & Wireless Communication (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The present invention provides audio-videos to be classified Adaptive Transmission system, comprising: receiving unit, transmission unit, coding unit, configuration unit and control unit；Control unit is separately connected with receiving unit, transmission unit, coding unit and configuration unit, and receiving unit is connected to the audio-video transmitting terminal of exterior, and transmission unit is connected to the audio-video receiving end of exterior；Receiving unit is for receiving audio-video frequency media, and transmission unit is for sending audio-video frequency media, and coding unit is for recompiling video media；Configuration unit under specific network availability bandwidth for configuring corresponding media Adaptive Transmission strategy, a kind of corresponding audio-video frequency media for transmitting coded format of each media Adaptive Transmission strategy；Control unit is to received audio-video frequency media, and according to the media Adaptive Transmission strategy of configuration, decision is issued after recompiling or directly issued, to reach the network self-adapting laser propagation effect of system audio-video.
Description
Technical field
The present invention relates to audio/video communication fields, and in particular to audio-video is classified Adaptive Transmission system.
Background technique
Video communication technology is increasingly used widely every profession and trade, improves work and communication effectiveness.Some
Non- civilian national security protection audio/video communication field is deployed with a large amount of video terminal due to particular historical, on the one hand this
The audio-video processing capacity of a little video terminals is limited, and another aspect network availability bandwidth is relatively low, even lower than 2Mbps.It brings
The problem of be exactly that the audio-visual quality transmitted not can guarantee, there is discontinuous, vase of video pictures Caton of playing audio-video etc.,
Video perception experience effect is poor.
Under such network condition, existing video terminal how is made full use of, and improves the sight of video playing as possible
Feel effect, it is very important.
The method according to available bandwidth and available frame per second frame losing recodification transmission that 109729439 A of CN is provided, this method
Transmitting terminal completion is needed to recompile video format, and existing private network terminal is incompetent.
Summary of the invention
The technical problem to be solved in the present invention is that for above-mentioned current audio-video platform transmission audio-visual quality without
The technical issues of method guarantees provides audio-video classification Adaptive Transmission system and solves above-mentioned technological deficiency.
Audio-video is classified Adaptive Transmission system, comprising: receiving unit, transmission unit, coding unit, configuration unit and control
Unit processed；Control unit is separately connected with receiving unit, transmission unit, coding unit and configuration unit, and receiving unit is connected to
The audio-video transmitting terminal of exterior, transmission unit are connected to the audio-video receiving end of exterior；
Receiving unit for receiving audio-video frequency media, transmission unit for sending audio-video frequency media, coding unit for pair
Video media is recompiled；Configuration unit is adaptively passed for configuring corresponding media under specific network availability bandwidth
Defeated strategy, a kind of corresponding audio-video frequency media for transmitting coded format of each media Adaptive Transmission strategy；Control unit docking
The audio-video frequency media of receipts, according to the media Adaptive Transmission strategy of configuration, decision is issued after recompiling or is directly issued,
To reach the network self-adapting laser propagation effect of system audio-video.
Further, media Adaptive Transmission strategy specifically includes:
When server end detects the network availability bandwidth B >=6Mbps (configurable) in the transmission of video channel of transmitting terminal, In
The transmission channel transmits 1080P audiovisual presentation to video terminal；
When server end detects that network availability bandwidth 3Mbps≤B < 6Mbps in the transmission of video channel of transmitting terminal (can
Configuration), 720P audiovisual presentation is transmitted to video terminal in the transmission channel；
When server end detects network availability bandwidth 1.5Mbps≤B < 3Mbps in the transmission of video channel of transmitting terminal
(configurable) transmits 4CIF audiovisual presentation to video terminal in the transmission channel；
When server end detects network availability bandwidth 512Kbps≤B < 1.5Mbps in the transmission of video channel of transmitting terminal
(configurable) transmits CIF audiovisual presentation to video terminal in the transmission channel；
When server end detects network availability bandwidth 384Kbps≤B < 512Kbps in the transmission of video channel of transmitting terminal
(configurable) transmits QCIF audiovisual presentation to video terminal in the transmission channel；
When server end detects that the network availability bandwidth about B < 384Kbps in the transmission of video channel of transmitting terminal (can match
Set), video, which is abandoned, in the transmission channel only transmits pure audio to video terminal.
Further, the processing logic of this system component units is: the media receiver that control unit receives receiving unit is logical
After knowing, the available bandwidth of the media transmission channel is obtained, then configures threshold from configuration unit reading media Adaptive Transmission strategy
Value determines the coded format for issuing Media Stream according to available bandwidth and threshold value；If it is determined that being to recompile and new weight
Coded format, then informed code unit completes recompiling for Media Stream, if it is decided that without recompiling, then informs that transmission is single
Member issues the Media Stream received.
Further, receiving unit processing logic is: after receiving unit receives the audio-video frequency media data flow of transmitting terminal, solution
It analyses the datagram and marks the coded format of the media data, inform control unit after caching.
Further, transmission unit processing logic is: transmission unit receives the media hair of control unit or coding unit
Requirement is sent, corresponding Media Stream is sent.
Further, coding unit processing logic is: coding unit takes out media stream data from data pack buffer, according to weight
The newly encoded instruction for sending Media Stream is sent to notice transmission unit after Media Stream recompiles is sent.
Further, configuration unit processing logic is: configuration unit receives under media Adaptive Transmission strategy configuration threshold value
Hair, saves the configuration threshold value.
It is an advantage of the present invention that the present invention, which provides audio-video, is classified Adaptive Transmission system, terminal modifications are not necessarily to, are only needed
Want the transmission of video processing strategie of the promotion server end of low cost, so that it may promote the perception effect of private network video.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is that audio-video of the invention is classified Adaptive Transmission system structure diagram；
Fig. 2 is the processing logical flow chart of control unit of the invention；
Fig. 3 is the processing logical flow chart of receiving unit of the invention.
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, now control attached drawing is described in detail
A specific embodiment of the invention.
Audio-video is classified Adaptive Transmission system, as shown in Figure 1, comprising: receiving unit 101, transmission unit 102, coding
Unit 103, configuration unit 104 and control unit 100；Control unit 100 and receiving unit 101, transmission unit 102, coding are single
Member 103 and configuration unit 104 are separately connected, and receiving unit 101 is connected to the audio-video transmitting terminal of exterior, transmission unit
102 are connected to the audio-video receiving end of exterior.
Receiving unit for receiving audio-video frequency media, transmission unit for sending audio-video frequency media, coding unit for pair
Video media is recompiled；Configuration unit is adaptively passed for configuring corresponding media under specific network availability bandwidth
Defeated strategy, a kind of corresponding audio-video frequency media for transmitting coded format of each media Adaptive Transmission strategy；Control unit docking
The audio-video frequency media of receipts, according to the media Adaptive Transmission strategy of configuration, decision is issued after recompiling or is directly issued,
To reach the network self-adapting laser propagation effect of system audio-video.
Media Adaptive Transmission strategy includes:
It, can when server end detects the network availability bandwidth B >=6Mbps (configurable) in the transmission of video channel of transmitting terminal
1080P audiovisual presentation is transmitted to video terminal in the transmission channel；
When server end detects that network availability bandwidth 3Mbps≤B < 6Mbps in the transmission of video channel of transmitting terminal (can
Configuration), 720P audiovisual presentation can be transmitted to video terminal in the transmission channel；
When server end detects network availability bandwidth 1.5Mbps≤B < 3Mbps in the transmission of video channel of transmitting terminal
(configurable) can transmit 4CIF audiovisual presentation to video terminal in the transmission channel；
When server end detects network availability bandwidth 512Kbps≤B < 1.5Mbps in the transmission of video channel of transmitting terminal
(configurable) can transmit CIF audiovisual presentation to video terminal in the transmission channel；
When server end detects network availability bandwidth 384Kbps≤B < 512Kbps in the transmission of video channel of transmitting terminal
(configurable) can transmit QCIF audiovisual presentation to video terminal in the transmission channel；
When server end detects that the network availability bandwidth about B < 384Kbps in the transmission of video channel of transmitting terminal (can match
Set), video can be abandoned in the transmission channel only transmit pure audio to video terminal.
The media Adaptive Transmission strategy of audio-video classification Adaptive Transmission system of the present invention configures the setting of threshold value and matches
The reference frame set is: for H.264, it is that audio-video is differentiated that normal transmission, which needs bandwidth theory valuation range computation formula,
The compression ratio of rate * 1.5*60fps*8bit/250, then stay certain surplus.It is 280x720* so that 720P is calculated as an example
1.5*60*8=632.8125Mbps 632.8125Mbps/250=2.53125Mbps ≈ 3M.
Component units of the present invention handle logic
After control unit 100 handles logic as shown in Fig. 2, receiving the media receiver notice of receiving unit 101, the matchmaker is obtained
The available bandwidth of body transmission channel compares transmission channel then from 104 reading media Adaptive Transmission policy threshold of configuration unit
Available bandwidth and media Adaptive Transmission policy threshold, determine initiate Media Stream coded format.It will be again if it is determined that being
Coding and new recodification format, then informed code unit 103 completes recompiling for Media Stream, if it is decided that without compiling again
Code then informs that transmission unit 102 issues the Media Stream received.
After receiving unit 101 handles logic as shown in figure 3, receiving the audio-video frequency media data flow of transmitting terminal, the number is parsed
According to the coded format for reporting and marking the media data, control unit 100 is informed after caching.
It is to receive the media transmission requirement of control unit 100 or coding unit 103, hair that transmission unit 102, which handles logic,
Send corresponding Media Stream.
It is to take out media stream data from data pack buffer that coding unit 103, which handles logic, according to recompiling transmission media
The instruction of stream is sent to notice transmission unit 102 after Media Stream recompiles is sent.
It is to receive media Adaptive Transmission strategy configuration threshold value to issue that configuration unit 104, which handles logic, saves the configuration threshold
Value.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form, all of these belong to the protection of the present invention.
Claims (7)
1. audio-video is classified Adaptive Transmission system characterized by comprising receiving unit, coding unit, is matched at transmission unit
Set unit and control unit；Control unit is separately connected with receiving unit, transmission unit, coding unit and configuration unit, is received
Unit is connected to the audio-video transmitting terminal of exterior, and transmission unit is connected to the audio-video receiving end of exterior；
Receiving unit is used for for sending audio-video frequency media, coding unit to video for receiving audio-video frequency media, transmission unit
Media are recompiled；Configuration unit under specific network availability bandwidth for configuring corresponding media Adaptive Transmission plan
Slightly, the corresponding audio-video frequency media for transmitting a kind of coded format of each media Adaptive Transmission strategy；Control unit is to received
Audio-video frequency media, according to the media Adaptive Transmission strategy of configuration, decision is issued after recompiling or is directly issued, to reach
To the network self-adapting laser propagation effect of system audio-video.
2. audio-video according to claim 1 is classified Adaptive Transmission system, which is characterized in that media Adaptive Transmission plan
Somewhat body includes:
When server end detects the network availability bandwidth B >=6Mbps in the transmission of video channel of transmitting terminal, in transmission channel biography
Defeated 1080P audiovisual presentation is to video terminal；
When server end detects network availability bandwidth 3Mbps≤B < 6Mbps in the transmission of video channel of transmitting terminal, in the biography
Defeated channel transfer 720P audiovisual presentation is to video terminal；
When server end detects network availability bandwidth 1.5Mbps≤B < 3Mbps in the transmission of video channel of transmitting terminal, at this
Transmission channel transmits 4CIF audiovisual presentation to video terminal；
When server end detects network availability bandwidth 512Kbps≤B < 1.5Mbps, In in the transmission of video channel of transmitting terminal
The transmission channel transmits CIF audiovisual presentation to video terminal；
When server end detects network availability bandwidth 384Kbps≤B < 512Kbps, In in the transmission of video channel of transmitting terminal
The transmission channel transmits QCIF audiovisual presentation to video terminal；
It is logical in the transmission when server end detects the network availability bandwidth about B < 384Kbps in the transmission of video channel of transmitting terminal
Road abandons video and only transmits pure audio to video terminal.
3. audio-video according to claim 1 is classified Adaptive Transmission system, which is characterized in that this system component units
Processing logic is: after control unit receives the media receiver notice of receiving unit, the available bandwidth of the media transmission channel is obtained,
Then threshold value is configured from configuration unit reading media Adaptive Transmission strategy, determines to issue media according to available bandwidth and threshold value
The coded format of stream；If it is determined that being to recompile and new recodification format, then informed code unit completes Media Stream
It recompiles, if it is decided that without recompiling, then inform that transmission unit issues the Media Stream received.
4. audio-video according to claim 1 is classified Adaptive Transmission system, which is characterized in that receiving unit handles logic
It is: after receiving unit receives the audio-video frequency media data flow of transmitting terminal, parses the datagram and mark the coding of the media data
Format informs control unit after caching.
5. audio-video according to claim 1 is classified Adaptive Transmission system, which is characterized in that transmission unit handles logic
Be: transmission unit receives control unit or the media of coding unit send requirement, sends corresponding Media Stream.
6. audio-video according to claim 1 is classified Adaptive Transmission system, which is characterized in that coding unit handles logic
Be: coding unit takes out media stream data from data pack buffer, according to the instruction for sending Media Stream is recompiled, to transmission media
Notice transmission unit is sent after stream is recompiled.
7. audio-video according to claim 1 is classified Adaptive Transmission system, which is characterized in that configuration unit handles logic
Be: configuration unit receives media Adaptive Transmission strategy configuration threshold value and issues, and saves the configuration threshold value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910728479.3A CN110505503A (en) | 2019-08-08 | 2019-08-08 | Audio-video is classified Adaptive Transmission system |
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| CN201910728479.3A CN110505503A (en) | 2019-08-08 | 2019-08-08 | Audio-video is classified Adaptive Transmission system |
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| CN110505503A true CN110505503A (en) | 2019-11-26 |
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| CN201910728479.3A Pending CN110505503A (en) | 2019-08-08 | 2019-08-08 | Audio-video is classified Adaptive Transmission system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113766169A (en) * | 2021-09-16 | 2021-12-07 | 江苏三步科技股份有限公司 | Audio and video data transmission system, optimization equipment and method in weak network environment |
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