CN106454553A - A precise time delay live video network transmission control method - Google Patents
A precise time delay live video network transmission control method Download PDFInfo
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- CN106454553A CN106454553A CN201611002721.1A CN201611002721A CN106454553A CN 106454553 A CN106454553 A CN 106454553A CN 201611002721 A CN201611002721 A CN 201611002721A CN 106454553 A CN106454553 A CN 106454553A
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- Prior art keywords
- maximum delay
- burst
- data
- server
- delay
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- 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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/845—Structuring of content, e.g. decomposing content into time segments
- H04N21/8456—Structuring of content, e.g. decomposing content into time segments by decomposing the content in the time domain, e.g. in time segments
-
- 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]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/643—Communication protocols
-
- 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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/85—Assembly of content; Generation of multimedia applications
- H04N21/854—Content authoring
- H04N21/8547—Content authoring involving timestamps for synchronizing content
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention relates to the technical field of Internet data precise transmission, and discloses a precise time delay live video network transmission control method comprising the following steps: configuring a maximum time delay for each network video program; recording the difference between the time spent by a collecting encoding server on collecting codes and the maximum time delay as a new maximum time delay; subjecting the video program data to slicing processing; sending each sliced data to a transit server according to a transport protocol based on a UPD and adding a new maximum delay to the sliced data; if the new maximum delay is less than or equal to zero, the slice is discarded, otherwise the slice is further transmitted until the slice is sent to a pushing server; the sliced data is transferred from the pushing server to a client terminal, and then buffered by the client terminal and waiting for the maximum delay to be broadcast by a player. According to the invention, the time point from collecting to playing is accurately controlled to reduce overtime data transmission and raise the network bandwidth utilization rate.
Description
Technical field
The present invention relates to internet data precise delivery control technology field, particularly to a kind of accurate time delay live video
Network transmission control method.
Background technology
Transmission control protocol（English：Transmission Control Protocol, TCP）：It is a kind of towards connection
, reliable, the transport layer communication protocol based on byte stream, defined by the RFC 793 of IETF.In the computer network simplifying
In osi model, it completes the 4th layer of function specified by transport layer.
UDP（English：User Datagram Protocol, UDP）：It is a kind of connectionless transport layer
Communication protocol, is defined by the RFC 768 of IETF.In the computer network osi model simplifying, it completes the 4th layer of transport layer institute
The function of specifying.
More and more ripe with internet environment, the continuous upgrading of internet hardware, people are obtained with same cost
Obtained the higher network bandwidth and more preferable online experience, Web TV also just arises at the historic moment.
Web TV such as provides live, program request, reviews at the function, and general direct broadcast band all can have corresponding TV guide,
Any program is play in TV guide prompting at what point in time.Facilitate user selectively to watch the program of each channel, have
Imitate improves Consumer's Experience.
Network TV living broadcast program typically can be through video acquisition, coding, data is activation, data receiver, data buffering and
Play several flow processs, can be through the data forwarding of some network nodes, therefore network TV program during collecting broadcasting
Quality heavy dependence network transmission, and the characteristic of network determines and packet loss occurs in transmitting procedure, network delay is shaken, and dashes forward
Situations such as send out flow, this leads to when carrying out network TV program live transmission, and the time point that user terminal is play necessarily prolongs
After the true reproduction time of channel, if be not controlled to time delay, user will be unable to watch section in specific time point
Mesh.
Transmission Control Protocol obtains one of widest procotol as the Internet, applications, and its main purpose is to provide reliably
Byte stream services, and ensures the integrality of data by packet loss retransmission mechanism, therefore, if after in the case of out of order arrival
Burst slowly can not receive, and TCP will wait until time-out always, and this mechanism will lead to the long interim card of programme televised live, directly
Impact Consumer's Experience.
Content of the invention
The present invention, in order to solve above-mentioned technical problem, provides a kind of accurate time delay live video network transmission control method,
Effectively improve the long problem leading to video program information cannot play in user side of live time delay in correct time point.
To achieve these goals, the present invention provides technical scheme below：
A kind of accurate time delay live video network transmission control method, is characterized in that, comprise the steps：
（1）The maximum delay T to every road network video frequency program for the configuration pin；
（2）The time that capturing and coding server is spent in capturing and coding is A, and the difference of T and A is denoted as new maximum delay；
（3）Burst process is carried out to video program data；
（4）Each fragment data is sent to by transfer server with the host-host protocol based on UDP, adds in described fragment data new
Maximum delay；Sending method is：When described burst is transmitted to next node, this nodes records receive fragment packets when
Between stab and finish receiving after timestamp, both differences are sent to the delivery time of this node for fragment data, maximum delay with
Difference between delivery time is new maximum delay；
（5）With（4）Burst is sent to stream pushing server by the sending method of step from transfer server；
（6）?（4）（5）In step, if new maximum delay is less than or equal to zero, abandon this burst, otherwise continue transmission
Until this burst is sent to stream pushing server；
（7）By this fragment data from stream pushing server be sent to after client terminal by client buffer and wait maximum delay again by
Player broadcasts.
Further, described（3）In burst processing procedure be that described video program data is divided into data volume identical
Multiple bursts.
The invention has the beneficial effects as follows：
（1）Accurately control burst from the time point collecting client terminal playing, thus avoiding in the past uncontrolled prolonging at random
When the problem of poor user experience that leads to；
（2）Reduce timeout datum transmission, improve network bandwidth utilization factor.
Brief description
Accompanying drawing 1 is the web-transporting device schematic diagram of the present invention；
Accompanying drawing 2 is transmitting procedure schematic diagram of the present invention；
Accompanying drawing 3 is fragment data in node-node transmission block diagram；
Accompanying drawing 4 is transmitting procedure schematic diagram of the present invention；
Accompanying drawing 5 is that fragment data transmits block diagram between server.
Specific embodiment
Below the specific embodiment of machine of the present invention accurate time delay live video network transmission control method is made specifically
Bright.
Precisely time delay live video network transmission control method comprises the steps：
（1）The maximum delay T to every road network video frequency program for the configuration pin；
（2）The time that capturing and coding server is spent in capturing and coding is A, and the difference of T and A is denoted as new maximum delay；
（3）Video program data is carried out with burst process, when burst is processed, video program data is divided into data volume identical many
Individual burst；
（4）Each fragment data is sent to by transfer server with the host-host protocol based on UDP, adds in described fragment data new
Maximum delay；Sending method is：When described burst is transmitted to next node, this nodes records receive fragment packets when
Between stab and finish receiving after timestamp, both differences are sent to the delivery time of this node for fragment data, maximum delay with
Difference between delivery time is new maximum delay；
（5）With（4）Burst is sent to stream pushing server by the sending method of step from transfer server；
（6）?（4）（5）In step, if new maximum delay is less than or equal to zero, abandon this burst, otherwise continue transmission
Until this burst is sent to stream pushing server；
（7）By this fragment data from stream pushing server be sent to after client terminal by client buffer and wait maximum delay again by
Player broadcasts.
Referring to accompanying drawing 1, network TV living broadcast program, after collection and encoder server carry out video acquisition, encode, is sent out
Deliver to some transfer servers, then sent to some stream pushing servers by transfer server, finally transfer to subscriber terminal equipment to enter
Row is play.
It is specifically described below.Configure the maximum delay of every road program in collection terminal, to video section after capturing and coding
Mesh number evidence carries out burst and processes and recalculate maximum delay, to be sent to transfer server, transfer based on the host-host protocol of UDP
Server calculates elapsed time when sending burst first bag, and the maximum delay of an above node is sent to elapsed time and must be gone simultaneously
Up-to-date maximum delay, and continue to be sent to next transfer server or stream pushing server with this time delay, data is finally led to
Cross stream pushing server and be sent to subscriber terminal equipment.The all nodes passing through from collection terminal to subscriber terminal equipment all can be according to disappearing
The time of consumption updates burst maximum delay, and does packet loss process when maximum delay is less than or equal to zero, to ensure in any node
The sliced transmission time when exceeding maximum delay will not by this sheet data continuation transmission go down.In fragment data by user terminal
After equipment caching, broadcasted by player again after the maximum delay time that user terminal will not be play immediately and be to wait for this burst.
The method requires each node that fragment data is passed through after capturing and coding to provide transmission as fast as possible, and in user terminal
Equipment caches, and determines when data is transferred to player plays by subscriber terminal equipment according to up-to-date maximum delay.
Specifically, the maximum delay of every road program is configured in collection terminal（It is designated as T）, and targetedly design one kind is based on
The host-host protocol of UDP, this agreement supports to carry maximum delay, and collection terminal calculates capturing and coding the spent time（It is designated as A）, it is used in combination
T deducts A as new maximum delay, and the video program data burst after encoding, wherein fragment packets are contained multiple UDP by host-host protocol
Packet, and bring T Reseal to be sent to next node, first fragment packets timestamp that this nodes records receives（Note
For T1）, after a burst finishes receiving, record sends first fragment packets timestamp（It is designated as T2）, with T2 deduct T1 obtain from
The time that a upper node is spent to this node（It is designated as Tn）, now maximum delay T is deducted Tn as new maximum delay
T, carries new maximum delay by host-host protocol and is transferred to next node, and during transmission, any one node all must
The value of T must be checked, if less than or represent that equal to zero this burst has timed, out it is impossible to reach objective in the time delay range of regulation
Family end, therefore host-host protocol directly abandon to this burst, not transmit.Client calculated burst before displaying video programs
Maximum delay T, is direct discarding less than or equal to zero, otherwise caches this burst, transfer to player plays after stand-by period T again.
By this method, burst can be accurately controlled from the time point collecting client terminal playing, thus avoiding in the past uncontrolled
The problem of the poor user experience that the random delay of system leads to.
The first step：The maximum delay to every road program for the configuration pin；
Second step：Capturing and coding server carries out burst after encoded program data and processes and recalculate maximum delay, and with
Fragment data is sent to by transfer server based on the host-host protocol of UDP（Referring to accompanying drawing 2）；
3rd step：First fragment packets timestamp that transfer server record receives and the first fragment packets timestamp sending,
Both subtract each other the time obtaining consuming, and use a node maximum delay and deduct this node elapsed time as new maximum delay,
If new maximum delay is less than or equal to zero, abandons this burst, otherwise this burst is sent to next transfer server
Or stream pushing server（Referring to accompanying drawing 3,4）；
4th step：Fragment data reaches after client terminal by client buffer and wait maximum delay to be broadcasted by player again（Ginseng
See accompanying drawing 5）.
The above is only the preferred embodiment of the present invention it is noted that ordinary skill people for the art
Member, under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be regarded as
Protection scope of the present invention.
Claims (2)
1. a kind of accurate time delay live video network transmission control method it is characterised in that：Comprise the steps：
（1）The maximum delay T to every road network video frequency program for the configuration pin；
（2）The time that capturing and coding server is spent in capturing and coding is A, and the difference of T and A is denoted as new maximum delay；
（3）Burst process is carried out to video program data；
（4）Each fragment data is sent to by transfer server with the host-host protocol based on UDP, adds in described fragment data new
Maximum delay；Sending method is：When described burst is transmitted to next node, this nodes records receive fragment packets when
Between stab and finish receiving after timestamp, both differences are sent to the delivery time of this node for fragment data, maximum delay with
Difference between delivery time is new maximum delay；
（5）With（4）Burst is sent to stream pushing server by the sending method of step from transfer server；
（6）?（4）（5）In step, if new maximum delay is less than or equal to zero, abandon this burst, otherwise continue transmission
Until this burst is sent to stream pushing server；
（7）By this fragment data from stream pushing server be sent to after client terminal by client buffer and wait maximum delay again by
Player broadcasts.
2. accurate time delay live video network transmission control method according to claim 1 it is characterised in that：Described
（3）In burst processing procedure be that described video program data is divided into the multiple burst of data volume identical.
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| CN201611002721.1A CN106454553A (en) | 2016-11-15 | 2016-11-15 | A precise time delay live video network transmission control method |
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Cited By (6)
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| CN106998478A (en) * | 2017-03-15 | 2017-08-01 | 青岛海信电器股份有限公司 | A kind of offset correction method and device for intelligent television current play list |
| CN109714634A (en) * | 2018-12-29 | 2019-05-03 | 青岛海信电器股份有限公司 | A kind of decoding synchronous method, device and the equipment of live data streams |
| CN109995787A (en) * | 2019-04-10 | 2019-07-09 | 北京奇艺世纪科技有限公司 | A kind of data processing method and relevant device |
| CN110072128A (en) * | 2019-04-22 | 2019-07-30 | 北京开广信息技术有限公司 | The real-time method for pushing and server of Media Stream |
| WO2020042039A1 (en) * | 2018-08-29 | 2020-03-05 | Oppo广东移动通信有限公司 | Communication method and device |
| CN115336283A (en) * | 2020-03-30 | 2022-11-11 | 英国电讯有限公司 | Low latency content delivery |
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Application publication date: 20170222 |