CN106850579A - Streaming media self-adapting flow rate adjusting method and device - Google Patents
Streaming media self-adapting flow rate adjusting method and device Download PDFInfo
- Publication number
- CN106850579A CN106850579A CN201710001427.7A CN201710001427A CN106850579A CN 106850579 A CN106850579 A CN 106850579A CN 201710001427 A CN201710001427 A CN 201710001427A CN 106850579 A CN106850579 A CN 106850579A
- Authority
- CN
- China
- Prior art keywords
- period
- media stream
- packet
- network
- network transmission
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/80—Responding to QoS
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
A kind of streaming media self-adapting flow rate adjusting method and device are disclosed, belongs to flow media flux regulation technology field.The method includes, by a free-standing streaming media self-adapting flow regulator, the network transmission index of the first period and the second period is obtained respectively, wherein, second time zero moment period was later than for the first time zero moment period, and the second timing end point moment period was later than for the first timing end point moment period；The duration of duration=the second period of the first period；Judge quality of the second period network transmission index compared with the first period network transmission index：When the network transmission index of the second period is better than the network transmission index of the first period, the bit rate output for being transmitted Media Stream is heightened；When the network transmission index of the second period is inferior to the network transmission index of the first period, the bit rate output for being transmitted Media Stream is turned down.The device is implemented for the method.In the case that it can run original system is not changed, the Automatic adjusument of Streaming Media is realized.
Description
Technical field
The present invention relates to flow media flux regulation technology field, more particularly to a kind of streaming media self-adapting Flow-rate adjustment side
Method and device.
Background technology
Streaming Media, is called streaming video, and it is a kind of media broadcast when passing.It is by the way of stream transmission in network
The media formats of broadcasting, businessman sends program as packet with a video delivery server, is sent on network.User
After being decompressed to these data by decompression apparatus, program will show as before transmission.However, being used for transport stream
The network availability bandwidth of media data be not it is unalterable, in addition, stream medium data self transmission need the network bandwidth
Nor it is unalterable, therefore, it is easy for causing at network peak period or larger Streaming Media its data, unavoidably
The phenomenon that the image interim card of Streaming Media occurs in ground occurs.In audio/video communication system, in order in keeping audio/video communication system
The fluency of image transmitting, it is necessary to according to the behaviour in service of the network bandwidth, the code check of Streaming Media output is automatically adjusted in real time, when
Detect network condition it is poor when, be transmitted the definition of data by reducing, it is ensured that be transmitted the flow field property of data；And when inspection
After measuring network condition improvement, in order to the experience sense for improving user is received, it is necessary to the code check for being transmitted data is improved, so as to improve
It is transmitted the definition of audio, video data.
In the prior art, following two methods are mainly included for adjusting the method for streaming media bit rate：
(1) flow control algorithm is added in streaming media server software, so that itself code check is adjusted, with controlling stream
Amount.Itself the disadvantage is that, need change streaming media server software code, for deployed system, because user does not have
Source code, it is impossible to implement this method.
(2) code-change algorithm, such as SVC, the bit rate output of dynamic regulation Streaming Media are used.It is the disadvantage is that, need
Transformation and upgrade are carried out to encoder, for that in runtime upgrading large number quipments can be brought to change, cost is very high.
The content of the invention
In view of this, the invention provides a kind of streaming media self-adapting flow rate adjusting method and device, it can not change
In the case of becoming original system operation, the Automatic adjusument of Streaming Media is realized.Thus more suitable for practicality.
In order to reach above-mentioned first purpose, the technical scheme of the streaming media self-adapting flow rate adjusting method that the present invention is provided
It is as follows：
The streaming media self-adapting flow rate adjusting method that the present invention is provided is comprised the following steps,
By a free-standing streaming media self-adapting flow regulator, the network of the first period and the second period is obtained respectively
Transmission data, wherein, the time zero moment the second period is later than the time zero moment the first period, when described second
The section timing end point moment is later than the timing end point moment the first period；The duration of first period=second period
Duration；
According to the transmitted data on network, the network transmission index of the first period and the second period is calculated respectively；
Judge quality of the second period network transmission index compared with the first period network transmission index：
When the network transmission index of second period is better than the network transmission index of first period, heightens and passed
The bit rate output of defeated Media Stream；
When the network transmission index of second period is inferior to the network transmission index of first period, turns down and passed
The bit rate output of defeated Media Stream.
In order to reach above-mentioned second purpose, the technical scheme of the streaming media self-adapting flow regulator that the present invention is provided
It is as follows：
The streaming media self-adapting adjusting means that the present invention is provided is set using stand alone type, and it includes clock, network transmission number
It is single according to acquiring unit, network transmission indicator calculating unit, network transmission index quality judging unit, the generation of code check regulation and control instruction
Unit, encoder trigger element；
The clock be used for trigger the first period time zero, the first period timing end point, the second period time zero and
Second period timing end point；Wherein, the time zero moment the second period be later than the time zero moment the first period, institute
Stating for the second timing end point moment period is later than the timing end point moment the first period；The duration of first period=described
The duration of two periods；
The transmitted data on network acquiring unit is used to obtain the network transmission index and described second of first period
The transmitted data on network of period；
The network transmission indicator calculating unit is used for according to the transmitted data on network, and the first period and the is calculated respectively
The network transmission index of two periods；
The network transmission index quality judging unit is used to judge whether the network transmission index of second period is excellent
In the network transmission index of first period；
The code check regulation and control instruction generation unit is used for the judgement knot according to network transmission index quality judging unit
Really, code check regulation and control instruction is generated.
The encoder trigger element is used to, according to the code check regulation and control instruction, trigger encoder, and the encoder is used for
Adjust the Media Stream bit rate output of the Media Stream export server.
The network transmission that the streaming media self-adapting flow rate adjusting method and device that the present invention is provided pass through the second period of comparison
Index and the network transmission index of the first period, refer to when the network transmission index of the second period is better than the network transmission of the first period
Timestamp, illustrates that bandwidth resources tend to abundant, and now, if maintaining the output of Media Stream low bit- rate, the definition of Streaming Media can be subject to
Influence, should heighten the Media Stream bit rate output of Media Stream export server, so as to improve the definition of Streaming Media.Conversely, working as
When the network transmission index of the second period is inferior to the network transmission index of the first period, illustrate that bandwidth resources tend to poor, now,
If maintaining Media Stream code check output high, because the bandwidth resources of code check needs higher are bigger, poor reactive volt-ampere hour is tended in bandwidth resources,
Media Stream interim card is will result in, Streaming Media cannot normally be presented, therefore, now need to turn down the media of Media Stream export server
Stream bit rate output, be in normally on media stream receiver server as cost exchanges Streaming Media for the definition for sacrificing Streaming Media
It is existing.Further, since the streaming media self-adapting flow regulator is set using stand alone type, can be without the former Streaming Media system of modification
System code, in the case of directly controlling encoder hardware to adjust flow by external program, realizes that the self adaptation of Streaming Media is adjusted
Section.
Brief description of the drawings
By reading the detailed description of hereafter preferred embodiment, various other advantages and benefit is common for this area
Technical staff will be clear understanding.Accompanying drawing is only used for showing the purpose of preferred embodiment, and is not considered as to the present invention
Limitation.And in whole accompanying drawing, identical part is denoted by the same reference numerals.In the accompanying drawings：
Fig. 1 for the present invention provide streaming media self-adapting flow rate adjusting method the step of flow chart；
Fig. 2 connects for the streaming media self-adapting flow regulator that the present invention is provided with Media Stream export server, Media Stream
Receive the signal stream relation schematic diagram between server, encoder；
Letter between free-standing each logic unit of streaming media self-adapting flow regulator itself that Fig. 3 is provided for the present invention
Number flow to relation schematic diagram；
The network transmission indicator calculating unit being related in the streaming media self-adapting flow regulator that Fig. 4 is provided for the present invention
Composition schematic diagram；
Fig. 5 be the streaming media self-adapting flow regulator that provides of the present invention when media stream receiver server is for multiple,
Signal between multiple media stream receiver servers and Streaming Media export server flows to relation schematic diagram；
A kind of the step of preferred implementation of the streaming media self-adapting flow rate adjusting method that Fig. 6 is provided for the present invention, flows
Cheng Tu.
Specific embodiment
The present invention is to solve the problems, such as prior art, there is provided a kind of streaming media self-adapting flow rate adjusting method and dress
Put, in the case that it can run original system is not changed, realize the Automatic adjusument of Streaming Media.Thus more suitable for reality
With.
Further to illustrate the present invention to reach technological means and effect that predetermined goal of the invention is taken, below in conjunction with
Accompanying drawing and preferred embodiment, to according to streaming media self-adapting flow rate adjusting method proposed by the present invention and device, it is embodied
Mode, structure, feature and its effect, describe in detail as after.In the following description, different " embodiment " or " embodiment " refers to
Be not necessarily same embodiment.Additionally, the special characteristic, structure or feature in one or more embodiments can be by any suitable
Form is combined.
The terms "and/or", only a kind of incidence relation for describing affiliated partner, represents there may be three kinds of passes
System, for example, A and/or B, is specifically interpreted as：A and B can simultaneously be included, can be with individualism A, it is also possible to individualism
B, can possess above-mentioned three kinds of any one situations.
Embodiment one
Referring to accompanying drawing 1, streaming media self-adapting flow rate adjusting method provided in an embodiment of the present invention is comprised the following steps：
Step 101：By a free-standing streaming media self-adapting flow regulator, when obtaining for the first period respectively with second
The transmitted data on network of section, wherein, the second time zero moment period was later than the first time zero moment period, the second period meter
When end of time be later than for the first timing end point moment period；The duration of duration=the second period of the first period；Wherein, second when
The time zero moment of section may be in the first period, its realization for having no effect on this method.
Step 102：According to the transmitted data on network of step 101, the network biography of the first period and the second period is calculated respectively
Defeated index.
Step 103：Judge quality of the second period network transmission index compared with the first period network transmission index：
When the network transmission index of the second period is better than the network transmission index of the first period, step 104 is performed：Heighten
It is transmitted the bit rate output of Media Stream；
When the network transmission index of the second period is inferior to the network transmission index of the first period, step 105 is performed：Turn down
It is transmitted the bit rate output of Media Stream.
The present invention provide streaming media self-adapting flow rate adjusting method by compare the second period network transmission index with
The network transmission index of the first period, when the network transmission index of the second period is better than the network transmission index of the first period,
Illustrate that bandwidth resources tend to abundant, now, if maintaining the output of Media Stream low bit- rate, the definition of Streaming Media can be affected,
The Media Stream bit rate output of Media Stream export server should be heightened, so as to improve the definition of Streaming Media.Conversely, when second
When the network transmission index of section is inferior to the network transmission index of the first period, illustrate that bandwidth resources tend to poor, now, if dimension
Media Stream code check output high is held, because the bandwidth resources of code check needs higher are bigger, poor reactive volt-ampere hour, Jiu Huizao is tended in bandwidth resources
Into Media Stream interim card, Streaming Media cannot normally be presented, therefore, now need the Media Stream for turning down Media Stream export server to export
Code check, to sacrifice the definition of Streaming Media as cost exchanges normal presentation of the Streaming Media on media stream receiver server for.Additionally,
Because the streaming media self-adapting flow regulator is set using stand alone type, the situation of original system operation can not changed
Under, realize the Automatic adjusument of Streaming Media.
In the present embodiment, perform step 104 or step 105 Posterior circle performs step 101, closed therefore, it is possible to be formed
Ring regulation mechanism, and then the Media Stream bit rate output of Media Stream export server is adjusted incessantly.
Wherein, judge that quality of the second period network transmission index compared with the first period network transmission index is to matchmaker
On the basis of the network interface card packet capturing of body stream the reception server, by (Real-Time Transport Protocol, real-time Transmission
Agreement) message carries out what is obtained after analytical analysis.In this case, after by the way that the RTP messages are parsed and analyzed, i.e.,
Can determine whether to obtain performance indications of the Media Stream in network transmission process, can judge network bandwidth resources tend to it is abundant or
Tend to poor, then the Media Stream that Media Stream export server is exported could be adjusted according to the situation of network bandwidth resources
Section.
Wherein, heighten or turn down the control instruction of the bit rate output for being transmitted Media Stream by free-standing streaming media self-adapting
Flow regulator is generated, and is sent to encoder, and the Media Stream bit rate output of Media Stream export server is adjusted by encoder.
Wherein, network transmission index include RTP messages transmission packet loss and/or RTP messages transmission jitter rate and/or
The network delay of RTP messages.Transmission packet loss refers to the ratio that lost data packet number accounts for transmitted packet during finger is tested；
Network delay refers to datagram counted when source point is left until be experienced altogether untill when arriving at terminal how long when
Prolong.The time delay wrapped refers to just the transmission time difference of the reception time with bag of bag；Jitter rate is the variable quantity of network delay, and it is
Produced by network delay in transmission route by any two adjacent data bag of same application, the computational methods of jitter rate
For jitter rate is obtained by the adjacent data packet delay time difference divided by packet sequence number difference.Under normal circumstances, the second period and first
Period compares, packet loss increase, illustrates that network bandwidth resources tend to poor；Packet loss reduces, and illustrates that network bandwidth resources become
In abundant；Network delay increases, and illustrates that the network bandwidth tends to poor；Network delay reduces, and illustrates that broadband network bandwidth resources become
In abundant；Jitter rate increases, and illustrates that network bandwidth resources tend to poor；Jitter rate reduces explanation network bandwidth resources and tends to rich
It is rich.
Wherein, the second period network transmission index and the first period network are judged by the transmission packet loss 105 of RTP messages
The quality that transmission objective is compared is comprised the following steps：
Wherein, " acquisition " hereinafter referred to as is obtained from the RTP messages of packet capturing.
Step 1101：Obtain the packet in the output of Media Stream export server end that RTP messages in the first period are carried
Quantity be x0,
Step 1102：Obtain the number in media stream receiver received server-side that the RTP messages are carried in the first period
It is x according to the quantity of bag1,
Step 1103：The then packet loss in the first period
Step 1104：Obtain the packet in the output of Media Stream export server end that RTP messages in the second period are carried
Quantity be x0',
Step 1105：Obtain the number in media stream receiver received server-side that the RTP messages are carried in the second period
It is x according to the quantity of bag2,
Step 1106：The then packet loss in the second period
Work as a2＜ a1When, it is believed that the packet loss of the second period is heightened and is transmitted Media Stream better than the packet loss of the first period
Bit rate output；
Work as a2＞ a1When, it is believed that the packet loss of the second period is inferior to the packet loss of the first period, turns down and is transmitted Media Stream
Bit rate output.
Wherein, judge that the second period network transmission index is passed with the first period network by the network delay 106 of RTP messages
The quality that defeated index is compared is comprised the following steps：
Step 1201：Obtain each data in the output of Media Stream export server end that RTP messages in the first period are carried
The timestamp of bag is respectively T00、T01、T02…T0m；
Step 1202：Obtain that the RTP messages in the first period carry in each of media stream receiver received server-side
The timestamp of packet is respectively T10、T11、T12…T1n；
Wherein, n ＜ m；
Step 1203：Calculate the packet that RTP messages are carried in the first period and be transferred to matchmaker from Media Stream export server
The averaging network time delay of body stream the reception server
Step 1204：Obtain each data in the output of Media Stream export server end that RTP messages in the second period are carried
The timestamp of bag is respectively T00’、T01’、T02’…T0p’；
Step 1205：Obtain that the RTP messages in the second period carry in each of media stream receiver received server-side
The timestamp of packet is respectively T20、T21、T22…T2q；
Wherein, q ＜ p；
Step 1206：Calculate each RTP messages in the second period and be transferred to media stream receiver clothes from Media Stream export server
The averaging network time delay of business device
WhenWhen, it is believed that the network delay of the second period is heightened and is transmitted matchmaker better than the network delay of the first period
The bit rate output of body stream；
WhenWhen, it is believed that the network delay of the second period is inferior to the network delay of the first period, turns down and is transmitted matchmaker
The bit rate output of body stream.
In this case, n ＜ m, q ＜ p why occur, because the packet that RTP messages are carried is from Media Stream
During export server is transmitted to media stream receiver server, packet loss can be produced, therefore, media stream receiver server is received
The quantity of the packet that the RTP messages that arrive are carried at Media Stream export server end certainly less than exporting of carrying of RTP messages
The quantity of packet, in theory, T00T might not be corresponded to10, T01T might not be corresponded to11, T02Also might not correspond to
T12..., because timestamp is T01Packet be possible in transmitting procedure lose, but for the ease of calculate, directly foundation
This Mathematical Modeling, can now produce certain systematic error, but data when being compared to the second period and the first period
Influence it is smaller, therefore, the comparative result of approximate calculation herein close to real comparative result, with confidence level higher.
Wherein, the second period network transmission index and the first period network transmission are judged by the jitter rate 107 of RTP messages
The quality that index is compared is comprised the following steps：
Step 1301：Obtain that the RTP messages in the first period carry in each of media stream receiver received server-side
In packet, the network delay of adjacent two data bag is respectively t11=T11-T10, t12=T12-T11..., t1n=T1n-T1n-1；
Step 1302：Obtain that the RTP messages in the first period carry in each of media stream receiver received server-side
The sequence number of packet is respectively Y10、Y11、…、Y1n, according to Y10、Y11、…、Y1n, calculate the RTP messages in the first period and carry
Each packet in media stream receiver received server-side sequence number difference be respectively y11=Y11-Y10, y12=Y12-Y11..., y1n
=Y1n-Y1n-1,
Step 1303：Calculate the average jitter rate in the first period
Step 1304：Obtain that the RTP messages in the second period carry in each of media stream receiver received server-side
In packet, the network delay of adjacent two data bag is respectively t21=T21-T20, t22=T22-T21..., t2q=T2q-T2q-1；
Step 1305：Obtain that the RTP messages in the first period carry in each of media stream receiver received server-side
The sequence number of packet is respectively Y20、Y21、…、Y2n, according to Y20、Y21、…、Y2q, calculate the RTP messages in the first period and carry
Each packet in media stream receiver received server-side sequence number difference be respectively y21=Y21-Y20, y22=Y22-Y21..., y2q
=Y2q-Y2q-1,
Step 1306：Calculate the average jitter rate in the first period
WhenWhen, it is believed that the network transmission index of the second period is heightened better than the network transmission index of the first period
It is transmitted the bit rate output of Media Stream；
WhenWhen, it is believed that the network transmission index of the second period is inferior to the network transmission index of the first period, turns down
It is transmitted the bit rate output of Media Stream.
Additionally, referring to accompanying drawing 5, under the conditions of the present embodiment, due to media stream receiver server, namely client quantity
May be relatively more, now, Media Stream export server, the regulation and control of the code check from each Streaming Media the reception server according to feedback
Instruction, as long as it is to turn down the instruction for being transmitted Media Stream bit rate output to have any regulation and control instruction, then Streaming Media export server is adjusted
Low Media Stream bit rate output.；Can also be according to the threshold value of setting, only when the quantity of the client for meeting regulatory demand is higher than to be somebody's turn to do
During threshold value, Automatic adjusument is just carried out；The demand of the larger client of customization bandwidth can also preferentially be met, self adaptation tune is carried out
Section.It will be seen from figure 1 that the regulation belongs to closed loop regulation, that is to say, that it can carry out closed loop regulation according to real time data.
Regulation and control instruction is obtained according to optimized algorithms such as neutral nets and calculates optimal Media Stream bit rate output numerical value, it is to avoid by numerical value by
Step increaseds or decreases to attempt optimal Media Stream bit rate output, improves the speed of Media Stream bit rate output regulation.
Embodiment two
Referring to 2~accompanying drawing of accompanying drawing 4, the streaming media self-adapting flow regulator that the present invention is provided is set using stand alone type,
It includes that clock, transmitted data on network acquiring unit, network transmission indicator calculating unit, network transmission index are good and bad and judges single
Unit, code check regulation and control instruction generation unit, encoder trigger element, wherein, network transmission indicator calculating unit, network transmission index
Good and bad judging unit and encoder trigger element collectively form analysis resolution unit.
Clock is used to trigger the first period time zero, the first period timing end point, the second period time zero and second
Period timing end point；Wherein, the second time zero moment period be later than the first time zero moment period, timing end the second period
The point moment was later than for the first timing end point moment period；The duration of duration=the second period of the first period.Wherein, second period
The time zero moment may be in the first period, its realization for having no effect on this method.
The network transmission index and the network of the second period that transmitted data on network acquiring unit was used to obtain the first period are passed
Defeated index.
Network transmission indicator calculating unit is used for according to transmitted data on network, calculates for the first period respectively with the second period
Network transmission index.
When whether network transmission index quality judging unit is used to judge the network transmission index of the second period better than first
The network transmission index of section.
The code check regulation and control instruction generation unit is used for the judgement knot according to network transmission index quality judging unit
Really, code check regulation and control instruction is generated.Encoder trigger element is used to, according to the code check regulation and control instruction, trigger encoder.
Encoder is used for the triggering command according to encoder trigger element, and the Media Stream for adjusting Media Stream export server is defeated
Go out code check.Wherein, when the triggering command of encoder trigger element is the bit rate output for heightening Media Stream, the matchmaker of encoder establishment
Body stream bit rate output is improved；When the triggering command of encoder trigger element is that encoder is compiled when reducing the bit rate output of Media Stream
The Media Stream bit rate output reduction of system.
The streaming media self-adapting flow regulator that the present invention is provided is compared using network transmission index quality judging unit
The network transmission index of the second period and the network transmission index of the first period, when the network transmission index of the second period is better than the
During the network transmission index of one period, illustrate that bandwidth resources tend to abundant, now, if maintaining the output of Media Stream low bit- rate, stream
The definition of media can be affected, and should heighten the Media Stream bit rate output of Media Stream export server, so as to improve stream matchmaker
The definition of body.Conversely, when the network transmission index of the second period is inferior to the network transmission index of the first period, illustrating bandwidth
Resource tends to poor, now, if maintaining Media Stream code check output high, because the bandwidth resources of code check needs higher are bigger,
Bandwidth resources tend to poor reactive volt-ampere hour, will result in Media Stream interim card, and Streaming Media cannot normally be presented, therefore, now need to turn down matchmaker
The Media Stream bit rate output of body stream export server, is connect as cost exchanges Streaming Media for the definition for sacrificing Streaming Media in Media Stream
Receive the normal presentation on server.Further, since the streaming media self-adapting flow regulator is set using stand alone type, Neng Gou
In the case of not changing original system operation, the Automatic adjusument of Streaming Media is realized.Additionally, the streaming media self-adapting Flow-rate adjustment
The network card data of device duplicate media stream the reception server, obtains without from network, thus is not take up network bandwidth resources, protects
Demonstrate,prove the transmission bandwidth demand of Media Stream.
Wherein, judge that quality of the second period network transmission index compared with the first period network transmission index is to matchmaker
The network interface card information of body stream the reception server is carried out on the basis of packet capturing, and parsing point is carried out to RTP messages by analyzing resolution unit
Obtained after analysis.In this case, after by the way that the RTP messages are parsed and analyzed, you can judgement obtains Media Stream and exists
Performance indications in network transmission process, can judge network bandwidth resources and tend to abundant or tend to poor, then could
Situation according to network bandwidth resources is adjusted to the Media Stream that Media Stream export server is exported.
Wherein, transmitted data on network acquiring unit include data packet number acquisition module and/or timestamp acquisition module and/
Or packet sequence number acquisition module.Data packet number acquisition module is used to obtain being serviced in Media Stream output for RTP messages carrying
The quantity of the packet of device end output, and, the packet in media stream receiver received server-side that the RTP messages are carried
Quantity.Timestamp acquisition module is used to obtain each packet in the output of Media Stream export server end of RTP messages carrying
Timestamp, and, the timestamp of each packet in media stream receiver received server-side that the RTP messages are carried.Packet
Sequence number acquisition module is used to obtain the sequence number of each packet in the output of Media Stream export server end of RTP messages carrying, and
The sequence number of each packet in media stream receiver received server-side that the RTP messages are carried.
Wherein, transmission packet loss refers to the ratio that lost data packet number accounts for transmitted packet during finger is tested；Network
Time delay refers to datagram to be counted when source point is left until experienced time delay how long altogether untill when arriving at terminal.I.e.
The time delay of bag refers to just the transmission time difference of the reception time with bag of bag；Jitter rate is the variable quantity of network delay, and it is by same
Any two adjacent data bag of one application is produced in transmission route by network delay, and the computational methods of jitter rate are to tremble
Dynamic rate is obtained by the adjacent data packet delay time difference divided by packet sequence number difference.Under normal circumstances, the second period and the first period
Compare, packet loss increase illustrates that network bandwidth resources tend to poor；Packet loss reduces, and illustrates that network bandwidth resources tend to rich
It is rich；Network delay increases, and illustrates that the network bandwidth tends to poor；Network delay reduces, and illustrates that broadband network bandwidth resources tend to rich
It is rich；Jitter rate increases, and illustrates that network bandwidth resources tend to poor；Jitter rate reduces explanation network bandwidth resources and tends to abundant.
Wherein, referring to accompanying drawing 3, network transmission indicator calculating unit includes packet loss computing unit, and network transmission index is excellent
Bad judging unit includes packet loss judging unit,
Packet loss computing unit includes the first packet loss computing module, the second packet loss computing module；
First packet loss computing module be used for obtain the first period in RTP messages carry at Media Stream export server end
The quantity of the packet of output is x0, and, for obtaining that the RTP messages in the first period carry in media stream receiver service
The quantity of the packet that device end receives is x1, also, for calculating the packet loss in the first period
Second packet loss computing module is exported for what Real-time Transport Protocol incoming message in the second period of acquisition was carried in Media Stream
The quantity of the packet of server end output is x0', and, for obtain the second period in Real-time Transport Protocol outgoing message carry
The quantity of the packet of media stream receiver received server-side is x2, also, for calculating the packet loss in the second period
Packet loss judging unit is used to judge a1、a2Magnitude relationship,
Work as a2＜ a1When, it is believed that the packet loss of the second period is better than the packet loss of the first period, the triggering of packet loss judging unit
Be transmitted Media Stream bit rate output heightens action；
Work as a2＞ a1When, it is believed that the packet loss of the second period is inferior to the packet loss of the first period, the triggering of packet loss judge module
Be transmitted Media Stream bit rate output turns down action.
Wherein, referring to accompanying drawing 3, network transmission indicator calculating unit includes network delay computing unit, network transmission index
Good and bad judging unit includes network delay judging unit,
Network delay computing unit includes first network time delay computing module, the second network delay computing module；
First network time delay computing module is used for
Obtain the timestamp of each packet in the output of Media Stream export server end that RTP messages in the first period are carried
Respectively T00、T01、T02…T0m,
With,
For obtaining each packet in media stream receiver received server-side that the RTP messages are carried in the first period
Timestamp be respectively T10、T11、T12…T1n, wherein, n ＜ m；
Also,
Calculate the packet that RTP messages are carried in the first period and be transferred to media stream receiver clothes from Media Stream export server
The averaging network time delay of business device
Second network delay computing module is used for
Obtain the timestamp of each packet in the output of Media Stream export server end that RTP messages in the second period are carried
Respectively T00’、T01’、T02’…T0p',
With,
For obtaining each packet in media stream receiver received server-side that the RTP messages are carried in the second period
Timestamp be respectively T20、T21、T22…T2q, wherein, q ＜ p；
Also,
Calculate the packet that RTP messages are carried in the second period and be transferred to media stream receiver clothes from Media Stream export server
The averaging network time delay of business device
Network delay judging unit is used to judgeMagnitude relationship,
WhenWhen, it is believed that the network delay of the second period is better than the network delay of the first period, and network delay judges
What unit triggers were transmitted Media Stream bit rate output heightens action；
WhenWhen, it is believed that the network delay of the second period is inferior to the network delay of the first period, and network delay judges
What unit triggers were transmitted Media Stream bit rate output turns down action.
In this case, n ＜ m, q ＜ p why occur, because the packet that RTP messages are carried is from Media Stream
During export server is transmitted to media stream receiver server, packet loss can be produced, therefore, media stream receiver server is received
The quantity of the packet that the RTP messages that arrive are carried at Media Stream export server end certainly less than exporting of carrying of RTP messages
The quantity of packet, in theory, T00T might not be corresponded to10, T01T might not be corresponded to11, T02Also might not correspond to
T12..., because timestamp is T01Packet be possible in transmitting procedure lose, but for the ease of calculate, directly foundation
This Mathematical Modeling, can now produce certain systematic error, but data when being compared to the second period and the first period
Influence it is smaller, therefore, herein only this calculate comparative result close to real comparative result, with confidence level higher.
Wherein, referring to accompanying drawing 3, network transmission indicator calculating unit includes jitter rate computing unit, and network transmission index is excellent
Bad judging unit includes jitter rate judging unit,
Jitter rate computing unit includes the first jitter rate computing module, the second jitter rate computing module；
First jitter rate computing module is used for,
Obtain that the RTP messages in the first period carry in each packet of media stream receiver received server-side,
The network delay of adjacent two data bag is respectively t11=T11-T10, t12=T12-T11..., t1n=T1n-T1n-1；
With,
Obtain the sequence of each packet in media stream receiver received server-side that the RTP messages are carried in the first period
Number be respectively Y10、Y11、…、Y1n, according to Y10、Y11、…、Y1n, calculate that the RTP messages in the first period carry in Media Stream
The sequence number difference of each packet that the reception server end receives is respectively y11=Y11-Y10, y12=Y12-Y11..., y1n=Y1n-Y1n-1,
Also,
Calculate the average jitter rate in the first period
Second jitter rate computing module is used for,
Obtain that the RTP messages in the second period carry in each packet of media stream receiver received server-side,
The network delay of adjacent two data bag is respectively t21=T21-T20, t22=T22-T21..., t2q=T2q-T2q-1；
Obtain the sequence of each packet in media stream receiver received server-side that the RTP messages are carried in the first period
Number be respectively Y20、Y21、…、Y2n, according to Y20、Y21、…、Y2q, calculate that the RTP messages in the first period carry in Media Stream
The sequence number difference of each packet that the reception server end receives is respectively y21=Y21-Y20, y22=Y22-Y21..., y2q=Y2q-Y2q-1,
Also,
Calculate the average jitter rate in the first period
Jitter rate judging unit is used to judgeMagnitude relationship,
WhenWhen, it is believed that the jitter rate of the second period is better than the jitter rate of the first period, and jitter rate judging unit is touched
What hair was transmitted Media Stream bit rate output heightens action；
WhenWhen, it is believed that the jitter rate of the second period is inferior to the jitter rate of the first period, shake judging unit triggering
Be transmitted Media Stream bit rate output turns down action.
Wherein, clock, transmitted data on network acquiring unit, network transmission indicator calculating unit, network transmission index are good and bad
Judging unit, encoder trigger element are set using stand alone type.In this case, it passes through directly to replicate Streaming Media reception clothes
The network interface card information of business device, the structure of original system is not influenceed, it is not necessary to any modification is made to original system, therefore, do not influenceing original
Have system normally operation in the case of, you can install, implement, low cost and be easy to safeguard.
Referring to accompanying drawing 6, the preferred realization side of one kind of the streaming media self-adapting flow rate adjusting method provided as the present invention
Formula, comprises the following steps：
Step 601：Obtain the first period transmitted data on network；
Step 602：According to the transmitted data on network, the first period network transmission index is calculated；
Step 603：Judge the first period network transmission index whether less than network transmission index empirical value：
If it is not, performing step 604：Then turn down the bit rate output of media stream；
If so, performing step 605：Then obtain transmitted data on network in the second period；
Step 606：According to the transmitted data on network, second time period network transmission index is calculated；
Step 607：Judge the second period network transmission index whether less than network transmission index empirical value：
If it is not, performing step 604：Then turn down the bit rate output of media stream；
If so, performing step 608：Then continue to judge whether the network transmission index of the second period is less than the first period network
Transmission objective：
If so, performing step 604：Then heighten the bit rate output of media stream；
If it is not, performing step 609：The bit rate output for being transmitted Media Stream is then turned down, hereafter continues to obtain the first period net
Network transmits data, forms closed loop regulation mechanism.
In this case, that is, think there is an empirical value, image quality is transmitted when the empirical value is reached cannot watch, once
The empirical value is reached, Streaming Media export server turns down the bit rate output of media stream.
, but those skilled in the art once know basic creation although preferred embodiments of the present invention have been described
Property concept, then can make other change and modification to these embodiments.So, appended claims are intended to be construed to include excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification without deviating from essence of the invention to the present invention
God and scope.So, if these modifications of the invention and modification belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising these changes and modification.
Claims (13)
1. a kind of streaming media self-adapting flow rate adjusting method, it is characterised in that comprise the following steps,
By a free-standing streaming media self-adapting flow regulator, the network transmission of the first period and the second period is obtained respectively
Data, wherein, the time zero moment the second period is later than the time zero moment the first period, the second period meter
When end of time be later than the timing end point moment the first period；The duration of first period=second period when
It is long；
According to the transmitted data on network, the network transmission index of the first period and the second period is calculated respectively；
Judge quality of the second period network transmission index compared with the first period network transmission index：
When the network transmission index of second period is better than the network transmission index of first period, heightens and be transmitted matchmaker
The bit rate output of body stream；
When the network transmission index of second period is inferior to the network transmission index of first period, turns down and be transmitted matchmaker
The bit rate output of body stream.
2. streaming media self-adapting flow rate adjusting method according to claim 1, it is characterised in that the judgement described second
Quality of the period network transmission index compared with the first period network transmission index is to media stream receiver server
Network interface card is carried out on the basis of packet capturing, is obtained after carrying out analytical analysis to RTP messages.
3. streaming media self-adapting flow rate adjusting method according to claim 1, it is characterised in that described to heighten or turn down
The control instruction for being transmitted the bit rate output of Media Stream is generated by free-standing streaming media self-adapting flow regulator, and is sent to
Encoder, the Media Stream bit rate output of Media Stream export server is adjusted by encoder.
4. streaming media self-adapting flow rate adjusting method according to claim 1, it is characterised in that the network transmission index
The transmission jitter rate and/or the network delay of RTP messages of transmission packet loss and/or RTP messages including RTP messages.
5. streaming media self-adapting flow rate adjusting method according to claim 4, it is characterised in that by the RTP messages
Transmission packet loss judge quality of the second period network transmission index compared with the first period network transmission index
Comprise the following steps：
The quantity for obtaining the packet in the output of Media Stream export server end that RTP messages in the first period are carried is x0,
The quantity for obtaining the packet in media stream receiver received server-side that the RTP messages are carried in the first period is x1,
The then packet loss in first period
Obtain RTP messages in the second period is in the quantity of the packet of Media Stream export server end agreement incoming message carrying
x0',
The quantity for obtaining the packet in media stream receiver received server-side that the RTP messages are carried in the second period is x2,
The then packet loss in second period
Work as a2＜ a1When, it is believed that the packet loss of second period is heightened and is transmitted media better than the packet loss of first period
The bit rate output of stream；
Work as a2＞ a1When, it is believed that the packet loss of second period is inferior to the packet loss of first period, turns down and is transmitted media
The bit rate output of stream.
6. streaming media self-adapting flow rate adjusting method according to claim 4, it is characterised in that by the RTP messages
Network delay judge good and bad bag of the second period network transmission index compared with the first period network transmission index
Include following steps：
Obtain the timestamp of each packet in the output of Media Stream export server end that RTP messages in first period are carried
Respectively T00、T01、T02…T0m；
Obtain each packet in media stream receiver received server-side that the RTP messages are carried in first period when
Between stamp be respectively T10、T11、T12…T1n；
Wherein, n ＜ m；
Calculate the packet that RTP messages are carried in first period and be transferred to the media from the Media Stream export server
Flow the averaging network time delay of the reception server
Obtain the timestamp of each packet in the output of Media Stream export server end that RTP messages in second period are carried
Respectively T00’、T01’、T02’…T0p’；
Obtain each packet in media stream receiver received server-side that the RTP messages are carried in second period when
Between stamp be respectively T20、T21、T22…T2q；
Wherein, q ＜ p；
Calculate each RTP messages in second period and be transferred to the media stream receiver service from the Media Stream export server
The averaging network time delay of device
WhenWhen, it is believed that the network delay of second period is heightened and passed better than the network delay of first period
The bit rate output of defeated Media Stream；
WhenWhen, it is believed that the network delay of second period is inferior to the network delay of first period, turns down and is passed
The bit rate output of defeated Media Stream.
7. streaming media self-adapting flow rate adjusting method according to claim 6, it is characterised in that by the RTP messages
Jitter rate judge that quality of the second period network transmission index compared with the first period network transmission index includes
Following steps：
Obtain that RTP messages in first period carry in each packet of media stream receiver received server-side, it is adjacent
The network delay of two packets is respectively t11=T11-T10, t12=T12-T11..., t1n=T1n-T1n-1；
Obtain the sequence number point of each packet in media stream receiver received server-side that RTP messages are carried in first period
Wei not Y10、Y11、…、Y1n, according to the Y10、Y11、…、Y1n, calculate that the RTP messages in first period carry in matchmaker
The sequence number difference of each packet that body stream the reception server end receives is respectively y11=Y11-Y10, y12=Y12-Y11..., y1n=Y1n-
Y1n-1,
Calculate the average jitter rate in the first period
Obtain that RTP messages in second period carry in each packet of media stream receiver received server-side, it is adjacent
The network delay of two packets is respectively t21=T21-T20, t22=T22-T21..., t2q=T2q-T2q-1；
Obtain the sequence number point of each packet in media stream receiver received server-side that RTP messages are carried in first period
Wei not Y20、Y21、…、Y2n, according to the Y20、Y21、…、Y2q, calculate that the RTP messages in first period carry in matchmaker
The sequence number difference of each packet that body stream the reception server end receives is respectively y21=Y21-Y20, y22=Y22-Y21..., y2q=Y2q-
Y2q-1,
Calculate the average jitter rate in the first period
WhenWhen, it is believed that the network transmission index of second period is better than the network transmission index of first period,
Heighten the bit rate output for being transmitted Media Stream；
WhenWhen, it is believed that the network transmission index of second period is inferior to the network transmission index of first period,
Turn down the bit rate output for being transmitted Media Stream.
8. a kind of streaming media self-adapting flow regulator, it is characterised in that the streaming media self-adapting adjusting means is using only
Vertical setting, it includes that clock, transmitted data on network acquiring unit, network transmission indicator calculating unit, network transmission index are excellent
Bad judging unit, code check regulation and control instruction generation unit, encoder trigger element；
The clock is used to trigger the first period time zero, the first period timing end point, the second period time zero and second
Period timing end point；Wherein, the time zero moment the second period be later than the time zero moment the first period, described
Two timing end point moment period were later than the timing end point moment the first period；During duration=described second of first period
The duration of section；
The transmitted data on network acquiring unit is used to obtain the network transmission index of first period and second period
Transmitted data on network；
The network transmission indicator calculating unit is used for according to the transmitted data on network, when calculating for the first period respectively with second
The network transmission index of section；
Whether the network transmission index quality judging unit is used to judge the network transmission index of second period better than institute
State the network transmission index of the first period；
The code check regulation and control instruction generation unit is used for the judged result according to network transmission index quality judging unit, raw
Into code check regulation and control instruction.
The encoder trigger element is used for according to the code check regulation and control instruction, triggers encoder, and the encoder is used to adjust
The Media Stream bit rate output of the Media Stream export server.
9. streaming media self-adapting flow rate adjusting method according to claim 8, it is characterised in that the judgement described second
It is being to Media Stream from Media Stream that quality of the period network transmission index compared with the first period network transmission index is
Export server is reported by analyzing resolution unit on the basis of carrying out packet capturing on the network of media stream receiver server to RTP
Text carries out what is obtained after analytical analysis.
10. streaming media self-adapting flow regulator according to claim 8, it is characterised in that the network transmission number
Include data packet number acquisition module and/or timestamp acquisition module and/or packet sequence number acquisition module according to acquiring unit,
The data packet number acquisition module is used to obtain the data in the output of Media Stream export server end of RTP messages carrying
The quantity of bag, and, the quantity of the packet in media stream receiver received server-side that the RTP messages are carried；
The timestamp acquisition module is used to obtain each packet in the output of Media Stream export server end of RTP messages carrying
Timestamp, and, the timestamp of each packet in media stream receiver received server-side that the RTP messages are carried；
The packet sequence number acquisition module is used to obtain each number in the output of Media Stream export server end of RTP messages carrying
According to bag sequence number, and the RTP messages carry each packet in media stream receiver received server-side sequence number.
11. streaming media self-adapting flow regulators according to claim 10, it is characterised in that the network transmission refers to
Mark computing unit includes packet loss computing unit, and the network transmission index quality judging unit includes packet loss judging unit,
The packet loss computing unit includes the first packet loss computing module, the second packet loss computing module；
The first packet loss computing module be used for obtain the first period in RTP messages carry at Media Stream export server end
The quantity of the packet of output is x0, and, for obtaining that the RTP messages in the first period carry in media stream receiver service
The quantity of the packet that device end receives is x1, also, for calculating the packet loss in first period
The second packet loss computing module be used for obtain the second period in RTP messages carry at Media Stream export server end
The quantity of the packet of output is x0', and, taken in media stream receiver for what the RTP messages in the second period of acquisition were carried
The quantity of the packet that business device end receives is x2, also, for calculating the packet loss in second period
The packet loss judging unit is used to judge a1、a2Magnitude relationship,
Work as a2＜ a1When, it is believed that the packet loss of second period is better than the packet loss of first period, and the packet loss judges
What unit triggers were transmitted Media Stream bit rate output heightens action；
Work as a2＞ a1When, it is believed that the packet loss of second period is inferior to the packet loss of first period, and the packet loss judges
What unit triggers were transmitted Media Stream bit rate output turns down action.
12. streaming media self-adapting flow regulators according to claim 10, it is characterised in that the network transmission refers to
Mark computing unit includes network delay computing unit, and it is single that the network transmission index quality judging unit includes that network delay judges
Unit,
The network delay computing unit includes first network time delay computing module, the second network delay computing module；
The first network time delay computing module is used for
Obtain the timestamp of each packet in the output of Media Stream export server end that RTP messages in first period are carried
Respectively T00、T01、T02…T0m,
With,
For obtaining each packet in media stream receiver received server-side that the RTP messages are carried in first period
Timestamp be respectively T10、T11、T12…T1n, wherein, n ＜ m；
Also,
Calculate the packet that RTP messages are carried in first period and be transferred to the media from the Media Stream export server
Flow the averaging network time delay of the reception server
The second network delay computing module is used for
Obtain the timestamp of each packet in the output of Media Stream export server end that RTP messages in second period are carried
Respectively T00’、T01’、T02’…T0p',
With,
For obtaining each packet in media stream receiver received server-side that the RTP messages are carried in second period
Timestamp be respectively T20、T21、T22…T2q, wherein, q ＜ p；
Also,
Calculate the packet that RTP messages are carried in second period and be transferred to the media from the Media Stream export server
Flow the averaging network time delay of the reception server
The network delay judging unit is used to judgeMagnitude relationship,
WhenWhen, it is believed that the network delay of second period is better than the network delay of first period, the network
What delay judgement unit triggers were transmitted Media Stream bit rate output heightens action；
WhenWhen, it is believed that the network delay of second period is inferior to the network delay of first period, the network
What delay judgement unit triggers were transmitted Media Stream bit rate output turns down action.
13. streaming media self-adapting flow regulators according to claim 10, it is characterised in that the network transmission refers to
Mark computing unit includes jitter rate computing unit, and the network transmission index quality judging unit includes jitter rate judging unit,
The jitter rate computing unit includes the first jitter rate computing module, the second jitter rate computing module；
The first jitter rate computing module is used for,
Obtain that the RTP messages in first period carry in each packet of media stream receiver received server-side,
The network delay of adjacent two data bag is respectively t11=T11-T10, t12=T12-T11..., t1n=T1n-T1n-1；
With,
Obtain the sequence of each packet in media stream receiver received server-side that the RTP messages are carried in first period
Number be respectively Y10、Y11、…、Y1n, according to the Y10、Y11、…、Y1n, calculate what the RTP messages in first period were carried
Y is respectively in the sequence number difference of each packet of media stream receiver received server-side11=Y11-Y10, y12=Y12-Y11..., y1n=
Y1n-Y1n-1,
Also,
Calculate the average jitter rate in the first period
The second jitter rate computing module is used for,
Obtain that the RTP messages in second period carry in each packet of media stream receiver received server-side,
The network delay of adjacent two data bag is respectively t21=T21-T20, t22=T22-T21..., t2q=T2q-T2q-1；
Obtain the sequence of each packet in media stream receiver received server-side that the RTP messages are carried in second period
Number be respectively Y20、Y21、…、Y2n, according to the Y20、Y21、…、Y2q, calculate what the RTP messages in first period were carried
Y is respectively in the sequence number difference of each packet of media stream receiver received server-side21=Y21-Y20, y22=Y22-Y21..., y2q=
Y2q-Y2q-1,
Also,
Calculate the average jitter rate in the second period
The jitter rate judging unit is used to judgeMagnitude relationship,
WhenWhen, it is believed that the jitter rate of second period is better than the jitter rate of first period, and the jitter rate is sentenced
What disconnected unit triggers were transmitted Media Stream bit rate output heightens action；
WhenWhen, it is believed that the jitter rate of second period is inferior to the jitter rate of first period, and the shake judges
What unit triggers were transmitted Media Stream bit rate output turns down action.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710001427.7A CN106850579A (en) | 2017-01-03 | 2017-01-03 | Streaming media self-adapting flow rate adjusting method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710001427.7A CN106850579A (en) | 2017-01-03 | 2017-01-03 | Streaming media self-adapting flow rate adjusting method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106850579A true CN106850579A (en) | 2017-06-13 |
Family
ID=59117017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710001427.7A Pending CN106850579A (en) | 2017-01-03 | 2017-01-03 | Streaming media self-adapting flow rate adjusting method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106850579A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107342848A (en) * | 2017-08-24 | 2017-11-10 | 杭州联吉技术有限公司 | A kind of adaptive code stream transmission method, device and equipment |
| CN114501083A (en) * | 2022-02-07 | 2022-05-13 | 北京百度网讯科技有限公司 | Code rate adjusting method, device, equipment, medium and program product |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101557273A (en) * | 2008-04-11 | 2009-10-14 | 傅承鹏 | Method simultaneously suitable for wired network real-time streaming media transport protocol and wireless network real-time streaming media transport protocol |
| CN101588597A (en) * | 2009-07-01 | 2009-11-25 | 南京工业大学 | Wireless streaming media self-adaptive hybrid FEC/ARQ control method based on Kalman filtering |
| CN102231898A (en) * | 2011-07-05 | 2011-11-02 | 深圳市融创天下科技股份有限公司 | Network bandwidth self-adaptive QOS (quality of service) transmission method and system and terminal device |
| CN102891993A (en) * | 2012-09-01 | 2013-01-23 | 合肥移瑞通信技术有限公司 | Streaming media transmission self-adaptive system in wireless network system |
| CN103546824A (en) * | 2013-10-25 | 2014-01-29 | 中国科学院声学研究所 | Method and device for controlling sending rate of streaming media |
-
2017
- 2017-01-03 CN CN201710001427.7A patent/CN106850579A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101557273A (en) * | 2008-04-11 | 2009-10-14 | 傅承鹏 | Method simultaneously suitable for wired network real-time streaming media transport protocol and wireless network real-time streaming media transport protocol |
| CN101588597A (en) * | 2009-07-01 | 2009-11-25 | 南京工业大学 | Wireless streaming media self-adaptive hybrid FEC/ARQ control method based on Kalman filtering |
| CN102231898A (en) * | 2011-07-05 | 2011-11-02 | 深圳市融创天下科技股份有限公司 | Network bandwidth self-adaptive QOS (quality of service) transmission method and system and terminal device |
| CN102891993A (en) * | 2012-09-01 | 2013-01-23 | 合肥移瑞通信技术有限公司 | Streaming media transmission self-adaptive system in wireless network system |
| CN103546824A (en) * | 2013-10-25 | 2014-01-29 | 中国科学院声学研究所 | Method and device for controlling sending rate of streaming media |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107342848A (en) * | 2017-08-24 | 2017-11-10 | 杭州联吉技术有限公司 | A kind of adaptive code stream transmission method, device and equipment |
| CN114501083A (en) * | 2022-02-07 | 2022-05-13 | 北京百度网讯科技有限公司 | Code rate adjusting method, device, equipment, medium and program product |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104125429B (en) | The adjusting method and device of video data transmission | |
| Lai et al. | A buffer-aware HTTP live streaming approach for SDN-enabled 5G wireless networks | |
| WO2020220902A1 (en) | Method and apparatus for distributing transmission parameters of video resources | |
| US10164893B2 (en) | Data transfer apparatus, data transfer controlling method and data stream | |
| CN105516262B (en) | Application program remote control method and system | |
| CN106817721B (en) | A kind of method, apparatus, terminal and the server of streaming media service bandwidth estimation | |
| CN103533451A (en) | Method and system for regulating jitter buffer | |
| CN106330761A (en) | Congestion control method and device based on queue delay | |
| CN1316398C (en) | System and method for modifying a video stream based on a client or network environment | |
| CN105306424B (en) | A kind of flow-medium transmission method, Streaming Media sending device and stream media transmission system | |
| CN104394484A (en) | Wireless live streaming media transmission method | |
| CN103475951A (en) | User-experience-based real-time video transmission rate self-adaption method | |
| CN107659819B (en) | A kind of method and apparatus of video code conversion | |
| CN105376176B (en) | Ensure the methods, devices and systems of mobile Internet video traffic service quality | |
| CN105791735B (en) | Method and system for video calling code stream dynamic adjustment | |
| CN104009819A (en) | Anti-packet-loss real-time communication method and system based on layered coding, and related devices | |
| CN106302016B (en) | The method and system of small flow quick obtaining network physical bandwidth | |
| US20200296442A1 (en) | Cap-based Client-Network Interaction for Improved Streaming Experience | |
| CN105392023A (en) | Video live broadcasting method and device in network jitter environment | |
| CN104333728B (en) | Audio video transmission regulates and controls method, apparatus, system and computer readable storage medium | |
| CN106453270B (en) | Adaptive Transmission algorithm based on PI control Streaming Media | |
| CN106850579A (en) | Streaming media self-adapting flow rate adjusting method and device | |
| CN109347825A (en) | A kind of processing method based on the glutinous packet of Transmission Control Protocol data subpackage | |
| Miller et al. | Optimal adaptation trajectories for block-request adaptive video streaming | |
| Zhang et al. | Arsenal: Understanding learning-based wireless video transport via in-depth evaluation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170613 |