CN110324667A - A kind of playback method and system of novel video stream - Google Patents
A kind of playback method and system of novel video stream Download PDFInfo
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- CN110324667A CN110324667A CN201810273533.5A CN201810273533A CN110324667A CN 110324667 A CN110324667 A CN 110324667A CN 201810273533 A CN201810273533 A CN 201810273533A CN 110324667 A CN110324667 A CN 110324667A
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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]
- H04N21/20—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, manipulating MPEG-4 scene graphs
- H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
- H04N21/234309—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4 or from Quicktime to Realvideo
-
- 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
- H04N21/61—Network physical structure; Signal processing
- H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
- H04N21/6125—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via Internet
-
- 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
- H04N21/61—Network physical structure; Signal processing
- H04N21/6156—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network
- H04N21/6175—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network involving transmission via Internet
-
- 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
- H04N21/64322—IP
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The embodiment of the invention provides the playback methods and system of a kind of novel video stream, novel device, streaming media server are disposed in IP network, view networked server, view networked terminals are deployed in depending on networking, which comprises novel device acquires novel video stream；Streaming media server obtains target video stream obtaining based on novel video circulation code, playing suitable for regarding networked terminals；The target video stream is sent to view networked server by streaming media server；Depending on networked server according to the downstream communications link to view networked terminals configuration, the target video stream is sent to and is played out depending on networked terminals.By carrying out transcoding processing to novel video stream in IP network unification, so that can directly play out in depending on networked terminals, the compatibility of view networking is improved, without mass upgrade or view networked terminals is replaced, greatly reduces cost.
Description
Technical field
The present invention relates to view networking technology fields, more particularly to the playback method and system of a kind of novel video stream.
Background technique
It is a real-time network depending on networking, can be realized the whole network HD video real-time Transmission, numerous Internet applications are pushed away
To HD video, high definition is face-to-face.
In monitoring field, science and technology is rapidly developed, and in order to guarantee the safety of video flowing, many equipment use novel volume solution
Code format.
Currently, depending on networked terminals hardware mostly do not support these novel code/decode format so that these novel volume solutions
The video flowing of code format can not be played out directly in depending on networked terminals.
If making it possible to directly play novel video stream to being upgraded depending on networked terminals or being replaced, since view is networked
The scale amount of terminal is big, will lead to cost ten/height.
Summary of the invention
In view of the above problems, it proposes the embodiment of the present invention and overcomes the above problem or at least partly in order to provide one kind
A kind of playback method of the novel video stream to solve the above problems and a kind of corresponding play system of novel video stream.
According to one aspect of the present invention, a kind of playback method of novel video stream is provided, is disposed in IP network novel
Equipment, streaming media server are deployed with view networked server, view networked terminals in depending on networking, which comprises
Novel device acquires novel video stream；
Streaming media server obtains target obtaining based on novel video circulation code, playing suitable for regarding networked terminals
Video flowing；
The target video stream is sent to view networked server by streaming media server；
Depending on networked server according to the downstream communications link to view networked terminals configuration, the target video stream is sent to
It is played out depending on networked terminals.
Optionally, the IP network is also deployed with transcoding server, the method also includes:
The novel video stream is sent to transcoding server by streaming media server；
Novel video circulation code is the target video stream played suitable for regarding networked terminals by transcoding server；
The streaming media server obtains being obtained based on novel video circulation code, suitable for view networked terminals broadcasting
Target video stream, comprising:
Streaming media server receives the target video stream that transcoding server is sent.
Optionally, the novel video stream is sent to transcoding server by the streaming media server, comprising:
Connection status between streaming media server detection and transcoding server；
The novel video stream is sent to transcoding service when the connection status is successful connection by streaming media server
Device；
Streaming media server ignores the novel video stream when the connection status is connection failure.
Optionally, novel video circulation code is to regard suitable for regarding the target that networked terminals play by the transcoding server
Frequency flows, comprising:
The novel video stream is decoded as characteristic video stream by transcoding server；
The characteristic video stream is encoded to by transcoding server is suitable for regarding the target video stream that networked terminals play.
Optionally, the format of the novel video stream is that H.265, the format of the characteristic video stream is YUV, the target
H.264 the format of video flowing is.
Optionally, the novel device acquires novel video stream, comprising:
Novel device acquires original video stream；
Novel device inquires the H.265 corresponding Novel encoder；
Novel device calls the Novel encoder that the original video stream is encoded to novel video stream.
Optionally, the novel video stream is decoded as characteristic video stream by the transcoding server, comprising:
Transcoding server inquires the H.265 corresponding new decoders；
Transcoding server calls the new decoders that the novel video stream is decoded as characteristic video stream.
Optionally, the characteristic video stream is encoded to by the transcoding server is suitable for regarding the target view that networked terminals play
Frequency flows, comprising:
Transcoding server detects load condition；
Transcoding server determines coding parameter according to the load condition；
The characteristic video stream is encoded to by transcoding server according to the coding parameter is suitable for regarding what networked terminals played
Target video stream.
According to another aspect of the present invention, a kind of play system of novel video stream is provided, is disposed in IP network novel
Equipment, streaming media server are deployed with view networked server, view networked terminals in depending on networking；
The novel device includes novel video stream acquisition module, and the streaming media server includes that target video stream obtains
Module, first object video stream module, the view networked server include the second target video stream sending module；
Novel video stream acquisition module, for acquiring novel video stream；
Target video stream obtains module, and for obtaining, being obtained based on novel video circulation code, to be suitable for view networking whole
Hold the target video stream played；
First object video stream module, for the target video stream to be sent to view networked server；
Second target video stream sending module will be described for according to the downstream communications link to view networked terminals configuration
Target video stream is sent to be played out depending on networked terminals.
Optionally, the IP network is also deployed with transcoding server, and the streaming media server further includes novel video stream hair
Module is sent, the transcoding server includes video stream transcoding module:
Novel video stream sending module, for the novel video stream to be sent to transcoding server；
Video stream transcoding module, for being the target video played suitable for regarding networked terminals by novel video circulation code
Stream；
The video stream transcoding module includes:
Target video stream receiving submodule, for receiving the target video stream of transcoding server transmission.
Optionally, the novel video stream sending module includes:
Connection status detection sub-module, for the connection status between detection and transcoding server；
It is successfully transmitted submodule, for when the connection status is successful connection, the novel video stream to be sent to
Transcoding server；
Unsuccessfully ignore submodule, for ignoring the novel video stream when the connection status is connection failure.
Optionally, the video stream transcoding module includes:
Decoding sub-module, for the novel video stream to be decoded as characteristic video stream；
Encoding submodule, for the characteristic video stream to be encoded to the target video stream for being suitable for regarding networked terminals and playing.
Optionally, the format of the novel video stream is that H.265, the format of the characteristic video stream is YUV, the target
H.264 the format of video flowing is.
Optionally, the novel video stream acquisition module includes:
Original video stream acquires submodule, for acquiring original video stream；
Novel encoder inquires submodule, for inquiring the H.265 corresponding Novel encoder；
Novel encoder calls submodule, novel for calling the Novel encoder to be encoded to the original video stream
Video flowing.
Optionally, the decoding sub-module includes:
New decoders query unit, for inquiring the H.265 corresponding new decoders；
New decoders call unit, for calling the new decoders that novel video stream decoding is characterized view
Frequency flows.
Optionally, the encoding submodule includes:
Load condition detection unit, for detecting load condition；
Coding parameter determination unit, for determining coding parameter according to the load condition；
Coding parameter coding unit is suitable for view networking for being encoded to the characteristic video stream according to the coding parameter
The target video stream of terminal plays.
The embodiment of the present invention includes following advantages:
In embodiments of the present invention, novel device, streaming media server are disposed in IP network, are deployed with view in depending on networking
Networked server, view networked terminals, novel device acquire novel video stream, and streaming media server is obtained to be circulated based on novel video
Target video stream is sent to view networking by target video stream that code obtains, playing suitable for regarding networked terminals, streaming media server
Target video stream is sent to view connection depending on networked server according to the downstream communications link to view networked terminals configuration by server
Network termination plays out, by carrying out transcoding processing to novel video stream IP network is unified, so that can be in depending on networked terminals
It directly plays out, improves the compatibility of view networking, without mass upgrade or replacement view networked terminals, greatly reduce into
This.
Detailed description of the invention
Fig. 1 is a kind of networking schematic diagram of view networking of one embodiment of the invention；
Fig. 2 is a kind of hardware structural diagram of node server of one embodiment of the invention；
Fig. 3 is a kind of hardware structural diagram of access switch of one embodiment of the invention；
Fig. 4 is that a kind of Ethernet association of one embodiment of the invention turns the hardware structural diagram of gateway；
Fig. 5 is a kind of step flow chart of the playback method of novel video stream of one embodiment of the invention；
Fig. 6 is the step flow chart of the playback method of another novel video stream of one embodiment of the invention；；
Fig. 7 is a kind of structural block diagram of the play system of novel video stream of one embodiment of the invention.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
It is the important milestone of network Development depending on networking, is a real-time network, can be realized HD video real-time Transmission,
Push numerous Internet applications to HD video, high definition is face-to-face.
Real-time high-definition video switching technology is used depending on networking, it can be such as high in a network platform by required service
Clear video conference, Intellectualized monitoring analysis, emergency command, digital broadcast television, delay TV, the Web-based instruction, shows video monitoring
Field live streaming, VOD program request, TV Mail, individual character records (PVR), Intranet (manages) channel by oneself, intelligent video Broadcast Control, information publication
All be incorporated into a system platform etc. services such as tens of kinds of videos, voice, picture, text, communication, data, by TV or
Computer realizes that high-definition quality video plays.
Embodiment in order to enable those skilled in the art to better understand the present invention is introduced to depending on networking below:
Depending on networking, applied portion of techniques is as described below:
Network technology (Network Technology)
Traditional ethernet (Ethernet) is improved depending on the network technology innovation networked, with potential huge on network
Video flow.(Circuit is exchanged different from simple network packet packet switch (Packet Switching) or lattice network
Switching), Streaming demand is met using Packet Switching depending on networking technology.Has grouping depending on networking technology
Flexible, the simple and low price of exchange, is provided simultaneously with the quality and safety assurance of circuit switching, it is virtually electric to realize the whole network switch type
The seamless connection of road and data format.
Switching technology (Switching Technology)
Two advantages of asynchronous and packet switch that Ethernet is used depending on networking eliminate Ethernet under the premise of complete compatible and lack
It falls into, has the end-to-end seamless connection of the whole network, direct user terminal, directly carrying IP data packet.User data is in network-wide basis
It is not required to any format conversion.It is the more advanced form of Ethernet depending on networking, is a real-time exchange platform, can be realized at present mutually
The whole network large-scale high-definition realtime video transmission that networking cannot achieve pushes numerous network video applications to high Qinghua, unitizes.
Server technology (Server Technology)
It is different from traditional server, its Streaming Media depending on the server technology in networking and unified video platform
Transmission be built upon it is connection-oriented on the basis of, data-handling capacity is unrelated with flow, communication time, single network layer energy
Enough transmitted comprising signaling and data.For voice and video business, handled depending on networking and unified video platform Streaming Media
Complexity many simpler than data processing, efficiency substantially increase hundred times or more than traditional server.
Reservoir technology (Storage Technology)
The ultrahigh speed reservoir technology of unified video platform in order to adapt to the media content of vast capacity and super-flow and
Using state-of-the-art real time operating system, the programme information in server instruction is mapped to specific hard drive space, media
Content is no longer pass through server, and moment is directly delivered to user terminal, and user waits typical time less than 0.2 second.It optimizes
Sector distribution greatly reduces the mechanical movement of hard disc magnetic head tracking, and resource consumption only accounts for the 20% of the internet ad eundem IP, but
The concurrent flow greater than 3 times of traditional disk array is generated, overall efficiency promotes 10 times or more.
Network security technology (Network Security Technology)
Depending on the structural design networked by servicing independent licence system, equipment and the modes such as user data is completely isolated every time
The network security problem that puzzlement internet has thoroughly been eradicated from structure, does not need antivirus applet, firewall generally, has prevented black
The attack of visitor and virus, structural carefree secure network is provided for user.
It services innovative technology (Service Innovation Technology)
Business and transmission are fused together by unified video platform, whether single user, private user or a net
The sum total of network is all only primary automatic connection.User terminal, set-top box or PC are attached directly to unified video platform, obtain rich
The multimedia video service of rich colorful various forms.Unified video platform is traditional to substitute with table schema using " menu type "
Complicated applications programming, considerably less code, which can be used, can be realized complicated application, realize the new business innovation of " endless ".
Networking depending on networking is as described below:
It is a kind of central controlled network structure depending on networking, which can be Tree Network, Star network, ring network etc. class
Type, but centralized control node is needed to control whole network in network on this basis.
As shown in Figure 1, being divided into access net and Metropolitan Area Network (MAN) two parts depending on networking.
The equipment of access mesh portions can be mainly divided into 3 classes: node server, access switch, terminal (including various machines
Top box, encoding board, memory etc.).Node server is connected with access switch, and access switch can be with multiple terminal phases
Even, and it can connect Ethernet.
Wherein, node server is the node that centralized control functions are played in access net, can control access switch and terminal.
Node server can directly be connected with access switch, can also directly be connected with terminal.
Similar, the equipment of metropolitan area mesh portions can also be divided into 3 classes: metropolitan area server, node switch, node serve
Device.Metropolitan area server is connected with node switch, and node switch can be connected with multiple node servers.
Wherein, node server is the node server for accessing mesh portions, i.e. node server had both belonged to access wet end
Point, and belong to metropolitan area mesh portions.
Metropolitan area server is the node that centralized control functions are played in Metropolitan Area Network (MAN), can control node switch and node serve
Device.Metropolitan area server can be directly connected to node switch, can also be directly connected to node server.
It can be seen that be entirely a kind of central controlled network structure of layering depending on networking network, and node server and metropolitan area
The network controlled under server can be the various structures such as tree-shaped, star-like, cyclic annular.
Visually claim, access mesh portions can form unified video platform (part in virtual coil), and multiple unified videos are flat
Platform can form view networking；Each unified video platform can be interconnected by metropolitan area and wide area depending on networking.
Classify depending on networked devices
1.1 embodiment of the present invention can be mainly divided into 3 classes: server depending on the equipment in networking, interchanger (including ether
Net gateway), terminal (including various set-top boxes, encoding board, memory etc.).Depending on networking can be divided on the whole Metropolitan Area Network (MAN) (or
National net, World Wide Web etc.) and access net.
1.2 equipment for wherein accessing mesh portions can be mainly divided into 3 classes: node server, access switch (including ether
Net gateway), terminal (including various set-top boxes, encoding board, memory etc.).
The specific hardware structure of each access network equipment are as follows:
Node server:
As shown in Fig. 2, mainly including Network Interface Module 201, switching engine module 202, CPU module 203, disk array
Module 204；
Wherein, Network Interface Module 201, the Bao Jun that CPU module 203, disk array module 204 are come in enter switching engine
Module 202；Switching engine module 202 look into the operation of address table 205 to the packet come in, to obtain the navigation information of packet；
And the packet is stored according to the navigation information of packet the queue of corresponding pack buffer 206；If the queue of pack buffer 206 is close
It is full, then it abandons；All pack buffer queues of 202 poll of switching engine mould, are forwarded: 1) port if meeting the following conditions
It is less than to send caching；2) the queue package counting facility is greater than zero.Disk array module 204 mainly realizes the control to hard disk, including
The operation such as initialization, read-write to hard disk；CPU module 203 is mainly responsible between access switch, terminal (not shown)
Protocol processes, to address table 205 (including descending protocol packet address table, uplink protocol package address table, data packet addressed table)
Configuration, and, the configuration to disk array module 204.
Access switch:
As shown in figure 3, mainly including Network Interface Module (downstream network interface module 301, uplink network interface module
302), switching engine module 303 and CPU module 304；
Wherein, the packet (upstream data) that downstream network interface module 301 is come in enters packet detection module 305；Packet detection mould
Whether mesh way address (DA), source address (SA), type of data packet and the packet length of the detection packet of block 305 meet the requirements, if met,
It then distributes corresponding flow identifier (stream-id), and enters switching engine module 303, otherwise abandon；Uplink network interface mould
The packet (downlink data) that block 302 is come in enters switching engine module 303；The data packet that CPU module 204 is come in enters switching engine
Module 303；Switching engine module 303 look into the operation of address table 306 to the packet come in, to obtain the navigation information of packet；
If the packet into switching engine module 303 is that downstream network interface is gone toward uplink network interface, in conjunction with flow identifier
(stream-id) packet is stored in the queue of corresponding pack buffer 307；If the queue of the pack buffer 307 is close full,
It abandons；If the packet into switching engine module 303 is not that downstream network interface is gone toward uplink network interface, according to packet
Navigation information is stored in the data packet queue of corresponding pack buffer 307；If the queue of the pack buffer 307 is close full,
Then abandon.
All pack buffer queues of 303 poll of switching engine module, are divided to two kinds of situations in embodiments of the present invention:
If the queue is that downstream network interface is gone toward uplink network interface, meets the following conditions and be forwarded: 1)
It is less than that the port sends caching；2) the queue package counting facility is greater than zero；3) token that rate control module generates is obtained；
If the queue is not that downstream network interface is gone toward uplink network interface, meets the following conditions and is forwarded:
1) it is less than to send caching for the port；2) the queue package counting facility is greater than zero.
Rate control module 208 is configured by CPU module 204, to all downlink networks in programmable interval
Interface generates token toward the pack buffer queue that uplink network interface is gone, to control the code rate of forwarded upstream.
CPU module 304 is mainly responsible for the protocol processes between node server, the configuration to address table 306, and,
Configuration to rate control module 308.
Ethernet association turns gateway:
As shown in figure 4, mainly including Network Interface Module (downstream network interface module 401, uplink network interface module
402), switching engine module 403, CPU module 404, packet detection module 405, rate control module 408, address table 406, Bao Huan
Storage 407 and MAC adding module 409, MAC removing module 410.
Wherein, the data packet that downstream network interface module 401 is come in enters packet detection module 405；Packet detection module 405 is examined
Ethernet mac DA, ethernet mac SA, Ethernet length or frame type, the view networking mesh way address of measured data packet
DA, whether meet the requirements depending on networking source address SA, depending on networking data Packet type and packet length, corresponding stream is distributed if meeting
Identifier (stream-id)；Then, MAC DA, MAC SA, length or frame type are subtracted by MAC removing module 410
(2byte), and enter corresponding receive and cache, otherwise abandon；
Downstream network interface module 401 detects the transmission caching of the port, according to the view of packet networking mesh if there is Bao Ze
Address D A knows the ethernet mac DA of corresponding terminal, adds the ethernet mac DA of terminal, Ethernet assists the MAC for turning gateway
SA, Ethernet length or frame type, and send.
The function that Ethernet association turns other modules in gateway is similar with access switch.
Terminal:
It mainly include Network Interface Module, Service Processing Module and CPU module；For example, set-top box mainly connects including network
Mouth mold block, video/audio encoding and decoding engine modules, CPU module；Encoding board mainly includes Network Interface Module, video encoding engine
Module, CPU module；Memory mainly includes Network Interface Module, CPU module and disk array module.
The equipment of 1.3 metropolitan area mesh portions can be mainly divided into 2 classes: node server, node switch, metropolitan area server.
Wherein, node switch mainly includes Network Interface Module, switching engine module and CPU module；Metropolitan area server mainly includes
Network Interface Module, switching engine module and CPU module are constituted.
2, networking data package definition is regarded
2.1 access network data package definitions
Access net data packet mainly include following sections: destination address (DA), source address (SA), reserve bytes,
payload(PDU)、CRC。
As shown in the table, the data packet for accessing net mainly includes following sections:
| DA | SA | Reserved | Payload | CRC |
Wherein:
Destination address (DA) is made of 8 bytes (byte), and first character section indicates type (such as the various associations of data packet
Discuss packet, multicast packet, unicast packet etc.), be up to 256 kinds of possibility, the second byte to the 6th byte is metropolitan area net address,
Seven, the 8th bytes are access net address；
Source address (SA) is also to be made of 8 bytes (byte), is defined identical as destination address (DA)；
Reserve bytes are made of 2 bytes；
The part payload has different length according to the type of different datagrams, is if it is various protocol packages
64 bytes are 32+1024=1056 bytes if it is single group unicast packets words, are not restricted to above 2 kinds certainly；
CRC is made of 4 bytes, and calculation method follows the Ethernet CRC algorithm of standard.
2.2 Metropolitan Area Network (MAN) packet definitions
The topology of Metropolitan Area Network (MAN) is pattern, may there is 2 kinds, connection even of more than two kinds, i.e. node switching between two equipment
It can all can exceed that 2 kinds between machine and node server, node switch and node switch, node switch and node server
Connection.But the metropolitan area net address of metropolitan area network equipment is uniquely, to close to accurately describe the connection between metropolitan area network equipment
System, introduces parameter in embodiments of the present invention: label, uniquely to describe a metropolitan area network equipment.
(Multi-Protocol Label Switch, multiprotocol label are handed over by the definition of label and MPLS in this specification
Change) label definition it is similar, it is assumed that between equipment A and equipment B there are two connection, then data packet from equipment A to equipment B just
There are 2 labels, data packet also there are 2 labels from equipment B to equipment A.Label is divided into label, outgoing label, it is assumed that data packet enters
The label (entering label) of equipment A is 0x0000, and the label (outgoing label) when this data packet leaves equipment A may reform into
0x0001.The networking process of Metropolitan Area Network (MAN) is to enter network process under centralized control, also means that address distribution, the label of Metropolitan Area Network (MAN)
Distribution be all to be dominated by metropolitan area server, node switch, node server be all passively execute, this point with
The label distribution of MPLS is different, and the distribution of the label of MPLS is the result that interchanger, server are negotiated mutually.
As shown in the table, the data packet of Metropolitan Area Network (MAN) mainly includes following sections:
| DA | SA | Reserved | Label | Payload | CRC |
That is destination address (DA), source address (SA), reserve bytes (Reserved), label, payload (PDU), CRC.Its
In, the format of label, which can refer to, such as gives a definition: label is 32bit, wherein high 16bit retains, only with low 16bit, its position
Set is between the reserve bytes and payload of data packet.
Referring to Fig. 5, a kind of step flow chart of the playback method of novel video stream of one embodiment of the invention is shown,
It can specifically include following steps:
Step 501, novel device acquires novel video stream.
In the concrete realization, novel device, streaming media server are disposed in IP network, and view networking is deployed in depending on networking
Server, view networked terminals.
So-called novel device, the equipment that can refer to monitoring field are such as used for the camera of monitoring field, can acquire
Novel video stream.
In monitoring field, the development of technology therewith generallys use novel Audio Video coding Standard and carries out encoding and decoding.
Step 502, streaming media server obtain based on the novel video circulation code obtain, suitable for being broadcast depending on networked terminals
The target video stream put.
In embodiments of the present invention, transcoding processing can be carried out to novel video stream in IP network, novel video is circulated
It is changed to the target video stream for being suitable for playing in view networked terminals.
Available target video stream of streaming media server, to be forwarded in view networking.
It should be noted that the transcoding is handled, can be executed in the other equipment independently of streaming media server, it can also
To execute in streaming media server, the embodiments of the present invention are not limited thereto.
Step 503, the target video stream is sent to view networked server by streaming media server.
In embodiments of the present invention, turn server in the edge deployment association depending on networking, which turns server configured with IP network
Gateway and view networking gateway.
Target video stream can be sent to the association and turn server by streaming media server, which turns server and regard the target
Frequency stream carries out the protocol conversion of IP network to view networking, and is sent to view networked server.
In one example, the data packet of target video streams can be encapsulated by regarding 2000 specifications of networking protocol as follows,
To be transmitted depending on networking:
Step 504, depending on networked server according to the downstream communications link to view networked terminals configuration, by the target video
Stream is sent to be played out depending on networked terminals.
In the concrete realization, regarding networked terminals can be set-top box (SetTopBox, STB), commonly referred to as set-top box or machine
Upper box is the equipment of connection a television set and outside source, and the digital signal of compression can be changed into television content by it, and
It shows on a television set.
In practical applications, networking is regarded as the network with centralized control functions, including main control server and undernet
Equipment, which includes terminal, and one of the core idea depending on networking is, by notifying to exchange by main control server
Equipment is directed to when time downstream communications link of service matches table, and the table for being then based on the configuration carries out the transmission of data packet.
That is, including: depending on the communication means in networking
Main control server configuration is when time downstream communications link of service.
Work as time data packet of service for what source terminal was sent, is sent to target terminal (such as according to the downstream communications link
Depending on networked terminals).
In embodiments of the present invention, it includes: notice when the downlink of secondary service is logical that time downstream communications link of service is worked as in configuration
Believe that switching equipment involved in link matches table.
It furthermore, include: the configured table of inquiry according to downstream communications link transmission, switching equipment is received to institute
Data packet is transmitted by corresponding port.
In the concrete realization, service includes unicast communication service and Multicast Communication Service.I.e. either cast communication is still
Unicast communication can realize the communication in view networking using the above-mentioned core idea with table-table.
As previously mentioned, view networking includes access mesh portions, in access net, which is node server, under
The grade network equipment includes access switch and terminal.
For the unicast communication service in access net, the main control server configuration is when time downlink communication chain of service
The step of road, may comprise steps of:
Sub-step S11, the service request protocol package that main control server is initiated according to source terminal are obtained when time downlink of service
Communication link information, downstream communications link information include participating in when time downlink of the main control server of service and access switch
Communication port information.
Sub-step S12, downstream communication ports information of the main control server according to control server, data packet inside it
The downlink port that setting is oriented to when time data packet of service in the table of location；And believe according to the downstream communication ports of access switch
Breath, to corresponding access switch sending port configuration order.
Sub-step S13, access switch according in port configuration command data packet addressed table inside it, setting when time
The downlink port that the data packet of service is oriented to.
For the Multicast Communication Service (such as video conference) in access net, main control server is obtained when under time service
The step of row communication link information may include following sub-step:
Sub-step S21, main control server obtain the service request agreement for the application Multicast Communication Service that target terminal is initiated
It wraps, includes the access net address of service type information, service content information and target terminal in service request protocol package.
It wherein, include service number in service content information.
Sub-step S22, main control server according to the service number in preset content-address mapping table, extraction source
The access net address of terminal.
Sub-step S23, main control server obtains the corresponding multicast address of source terminal, and distributes to target terminal；And according to
According to the access net address of service type information, source terminal and target terminal, the communication link information when time multicast services is obtained.
In embodiments of the present invention, novel device, streaming media server are disposed in IP network, are deployed with view in depending on networking
Networked server, view networked terminals, novel device acquire novel video stream, and streaming media server is obtained to be circulated based on novel video
Target video stream is sent to view networking by target video stream that code obtains, playing suitable for regarding networked terminals, streaming media server
Target video stream is sent to view connection depending on networked server according to the downstream communications link to view networked terminals configuration by server
Network termination plays out, by carrying out transcoding processing to novel video stream IP network is unified, so that can be in depending on networked terminals
It directly plays out, improves the compatibility of view networking, without mass upgrade or replacement view networked terminals, greatly reduce into
This.
Referring to Fig. 6, the step process of the playback method of another novel video stream of one embodiment of the invention is shown
Figure, can specifically include following steps:
Step 601, novel device acquires novel video stream.
In the concrete realization, in IP network dispose novel device, streaming media server, transcoding server, novel device with
Streaming media server connection, transcoding server are connect with streaming media server.
View networked server, view networked terminals are deployed in depending on networking.
Novel device acquires novel video stream, and is sent to streaming media server.
In the example of a novel video stream, H.265 the format of novel video stream is.
In this example, novel device acquires original video stream, such as PCM data, and transcoding server is inquired H.265 corresponding
Novel encoder, novel device call Novel encoder that original video stream is encoded to novel video stream.
In Novel encoder, video image is divided into basic module unit, intra prediction is selected according to image type
Or inter-prediction predicts module unit, obtains the difference of original block and prediction signal, i.e. prediction residual, carries out to prediction residual
Transform and quantization processing, for the transformation coefficient after obtained quantization.
On the one hand it encodes to obtain coded data via moisture in the soil, i.e., compressed video data.
On the other hand it is handled by inverse quantization and inverse transformation, obtains the approximation of residual error, and be added to obtain with prediction signal
Reconstructed image, reconstructed image are ultimately delivered to reference picture buffer area after handling via loop filtering, as subsequent image coding
Reference picture.
Step 602, the novel video stream is sent to transcoding server by streaming media server.
Since the resources such as consumption memory, CPU (Central Processing Unit, central processing unit) are compared in encoding and decoding,
Therefore, novel video stream can be sent to individual transcoding server and carry out encoding and decoding by streaming media server.
In one embodiment of the invention, step 602 may include following sub-step:
Sub-step S31, the connection status between streaming media server detection and transcoding server.
Sub-step S32, streaming media server send the novel video stream when the connection status is successful connection
To transcoding server.
Sub-step S33, streaming media server ignore the novel video stream when the connection status is connection failure.
In embodiments of the present invention, transcoding server can be initiated the connection to streaming media server, if successful connection,
Connection status between streaming media server maintenance and transcoding server.
In practical applications, streaming media server periodically can send heartbeat instruction, transcoding server to transcoding server
To correspondingly streaming media server feedback heartbeat response.
If streaming media server receives heartbeat response in section at the appointed time, between confirmation and transcoding server
Connection status is successful connection.
If streaming media server does not receive heartbeat response in section at the appointed time, between confirmation and transcoding server
Connection status be connection failure.
Streaming media server then can detecte between transcoding server in the novel video stream for receiving novel device
Novel video stream is then sent to transcoding server by the connection if it is successful connection by connection status, is lost if it is connection
It loses, then ignores novel video stream, the information of mistake is returned to novel device.
Step 603, the novel video stream is decoded as characteristic video stream by transcoding server.
In the concrete realization, novel video stream can be decoded as the characteristic video stream of specified format by transcoding server, then
Carry out coded treatment.
In the example of a novel video stream, H.265 the format of novel video stream is.
In this example, transcoding server can inquire H.265 corresponding new decoders, and transcoding server calls novel
Novel video stream is decoded as characteristic video stream by decoder.
In new decoders, the spatial redundancy of image is eliminated using intra prediction, eliminates video using inter-prediction
Time redundancy, being handled by change quantization reduces coded image distortion, further lowers statistical redundancy using arithmetic coding, most
Coded image distortion is reduced by filtering processing afterwards.
Wherein, the I frame being located at the first frame or random access point of video is generally using the image of intra prediction, only
It is encoded using the Pixel Information of image itself.
For the image of other positions in video, then interframe encode is realized by using reference image information.
In the example of a characteristic video stream, the format of characteristic video stream be YUV (YUV is a kind of colour coding method,
Y identifies brightness, and U and V identify coloration).
Yuv format is because of compression of images, is because to utilize people to the physiological property of the feeling of image.Due to people couple
Brightness is more sensitive, relatively less sensitive to color information, and yuv format is exactly that image brightness and coloration is separately shown
Format is easy to remove coloration, after this, starts the coding for carrying out other compression algorithms.
Step 604, the characteristic video stream is encoded to by transcoding server is suitable for regarding the target video that networked terminals play
Stream.
If novel video stream is decoded as characteristic video stream by transcoding server, can according to setting coding parameter (such as
Resolution ratio) it is encoded to the target video stream for being suitable for regarding networked terminals broadcasting, which is networked in view
It is played out in terminal.
In one example, H.264 the format of target video stream is.
In this example, then H.264 corresponding encoder can be called, according to the coding parameter of setting by characteristic video stream
It is encoded to and is suitable for regarding the target video stream that networked terminals play.
In oneainstance, coding parameter can be set in advance as unified numerical value, then can be into after reading the numerical value
Row coded treatment.
In another scenario, transcoding server detects load condition, such as memory usage, CPU usage.
Transcoding server determines coding parameter according to load condition, so that the case where resource of coding consumption meets load.
By taking resolution ratio as an example, load is bigger, then resolution ratio is smaller, conversely, load is smaller, then resolution ratio is bigger.
Characteristic video stream is encoded to the target video for being suitable for regarding networked terminals and playing according to coding parameter by transcoding server
Stream.
Step 605, streaming media server receives the target video stream that transcoding server is sent.
Target video stream is sent to streaming media server after transcoding completion by transcoding server.
Step 606, the target video stream is sent to view networked server by streaming media server.
Step 607, depending on networked server according to the downstream communications link to view networked terminals configuration, by the target video
Stream is sent to be played out depending on networked terminals.
It should be noted that for simple description, therefore, it is stated as a series of action groups for embodiment of the method
It closes, but those skilled in the art should understand that, embodiment of that present invention are not limited by the describe sequence of actions, because according to
According to the embodiment of the present invention, some steps may be performed in other sequences or simultaneously.Secondly, those skilled in the art also should
Know, the embodiments described in the specification are all preferred embodiments, and the related movement not necessarily present invention is implemented
Necessary to example.
Referring to Fig. 7, a kind of structural block diagram of the play system of novel video stream of one embodiment of the invention is shown,
Novel device 710, streaming media server 720 are disposed in IP network, and view networked server 730, view networking are deployed in depending on networking
Terminal 740；
The novel device 710 includes novel video stream acquisition module 711, and the streaming media server 720 includes target
Video flowing obtains module 721, first object video stream module 722, and the view networked server 730 is regarded including the second target
Frequency stream sending module 731；
Novel video stream acquisition module 711, for acquiring novel video stream；
Target video stream obtain module 721, for obtains based on the novel video circulation code obtain, be suitable for view network
The target video stream of terminal plays；
First object video stream module 722, for the target video stream to be sent to view networked server；
Second target video stream sending module 731, for according to view networked terminals configuration downstream communications link, by institute
It states target video stream and is sent to and played out depending on networked terminals.
In one embodiment of the invention, the IP network is also deployed with transcoding server, and the streaming media server is also
Including novel video stream sending module, the transcoding server includes video stream transcoding module:
Novel video stream sending module, for the novel video stream to be sent to transcoding server；
Video stream transcoding module, for being the target video played suitable for regarding networked terminals by novel video circulation code
Stream；
The video stream transcoding module includes:
Target video stream receiving submodule, for receiving the target video stream of transcoding server transmission.
In one embodiment of the invention, the novel video stream sending module includes:
Connection status detection sub-module, for the connection status between detection and transcoding server；
It is successfully transmitted submodule, for when the connection status is successful connection, the novel video stream to be sent to
Transcoding server；
Unsuccessfully ignore submodule, for ignoring the novel video stream when the connection status is connection failure.
In one embodiment of the invention, the video stream transcoding module includes:
Decoding sub-module, for the novel video stream to be decoded as characteristic video stream；
Encoding submodule, for the characteristic video stream to be encoded to the target video stream for being suitable for regarding networked terminals and playing.
In one example of an embodiment of the present invention, the format of the novel video stream is the H.265 characteristic video stream
Format be YUV, H.264 the format of the target video stream is.
In one embodiment of the invention, the novel video stream acquisition module 711 includes:
Original video stream acquires submodule, for acquiring original video stream；
Novel encoder inquires submodule, for inquiring the H.265 corresponding Novel encoder；
Novel encoder calls submodule, novel for calling the Novel encoder to be encoded to the original video stream
Video flowing.
In one embodiment of the invention, the decoding sub-module includes:
New decoders query unit, for inquiring the H.265 corresponding new decoders；
New decoders call unit, for calling the new decoders that novel video stream decoding is characterized view
Frequency flows.
In one embodiment of the invention, the encoding submodule includes:
Load condition detection unit, for detecting load condition；
Coding parameter determination unit, for determining coding parameter according to the load condition；
Coding parameter coding unit is suitable for view networking for being encoded to the characteristic video stream according to the coding parameter
The target video stream of terminal plays.
For system embodiments, since it is basically similar to the method embodiment, related so being described relatively simple
Place illustrates referring to the part of embodiment of the method.
In embodiments of the present invention, novel device, streaming media server are disposed in IP network, are deployed with view in depending on networking
Networked server, view networked terminals, novel device acquire novel video stream, and streaming media server is obtained to be circulated based on novel video
Target video stream is sent to view networking by target video stream that code obtains, playing suitable for regarding networked terminals, streaming media server
Target video stream is sent to view connection depending on networked server according to the downstream communications link to view networked terminals configuration by server
Network termination plays out, by carrying out transcoding processing to novel video stream IP network is unified, so that can be in depending on networked terminals
It directly plays out, improves the compatibility of view networking, without mass upgrade or replacement view networked terminals, greatly reduce into
This.
All the embodiments in this specification are described in a progressive manner, the highlights of each of the examples are with
The difference of other embodiments, the same or similar parts between the embodiments can be referred to each other.
It should be understood by those skilled in the art that, the embodiment of the embodiment of the present invention can provide as method, apparatus or calculate
Machine program product.Therefore, the embodiment of the present invention can be used complete hardware embodiment, complete software embodiment or combine software and
The form of the embodiment of hardware aspect.Moreover, the embodiment of the present invention can be used one or more wherein include computer can
With in the computer-usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) of program code
The form of the computer program product of implementation.
The embodiment of the present invention be referring to according to the method for the embodiment of the present invention, terminal device (system) and computer program
The flowchart and/or the block diagram of product describes.It should be understood that flowchart and/or the block diagram can be realized by computer program instructions
In each flow and/or block and flowchart and/or the block diagram in process and/or box combination.It can provide these
Computer program instructions are set to general purpose computer, special purpose computer, Embedded Processor or other programmable data processing terminals
Standby processor is to generate a machine, so that being held by the processor of computer or other programmable data processing terminal devices
Capable instruction generates for realizing in one or more flows of the flowchart and/or one or more blocks of the block diagram
The device of specified function.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing terminal devices
In computer-readable memory operate in a specific manner, so that instruction stored in the computer readable memory generates packet
The manufacture of command device is included, which realizes in one side of one or more flows of the flowchart and/or block diagram
The function of being specified in frame or multiple boxes.
These computer program instructions can also be loaded into computer or other programmable data processing terminal devices, so that
Series of operation steps are executed on computer or other programmable terminal equipments to generate computer implemented processing, thus
The instruction executed on computer or other programmable terminal equipments is provided for realizing in one or more flows of the flowchart
And/or in one or more blocks of the block diagram specify function the step of.
Although the preferred embodiment of the embodiment of the present invention has been described, once a person skilled in the art knows bases
This creative concept, then additional changes and modifications can be made to these embodiments.So the following claims are intended to be interpreted as
Including preferred embodiment and fall into all change and modification of range of embodiment of the invention.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that process, method, article or terminal device including a series of elements not only wrap
Those elements are included, but also including other elements that are not explicitly listed, or further includes for this process, method, article
Or the element that terminal device is intrinsic.In the absence of more restrictions, being wanted by what sentence "including a ..." limited
Element, it is not excluded that there is also other identical elements in process, method, article or the terminal device for including the element.
The broadcasting of the playback method and a kind of novel video stream of a kind of novel video stream provided by the present invention is filled above
It sets, is described in detail, used herein a specific example illustrates the principle and implementation of the invention, above
The explanation of embodiment is merely used to help understand method and its core concept of the invention；Meanwhile for the general skill of this field
Art personnel, according to the thought of the present invention, there will be changes in the specific implementation manner and application range, in conclusion this
Description should not be construed as limiting the invention.
Claims (10)
1. a kind of playback method of novel video stream, which is characterized in that novel device, streaming media server are disposed in IP network,
View networked server, view networked terminals are deployed in depending on networking, which comprises
Novel device acquires novel video stream；
Streaming media server obtains target video obtaining based on novel video circulation code, playing suitable for regarding networked terminals
Stream；
The target video stream is sent to view networked server by streaming media server；
Depending on networked server according to the downstream communications link to view networked terminals configuration, the target video stream is sent to view connection
Network termination plays out.
2. the method according to claim 1, wherein the IP network is also deployed with transcoding server, the method
Further include:
The novel video stream is sent to transcoding server by streaming media server；
Novel video circulation code is the target video stream played suitable for regarding networked terminals by transcoding server；
The streaming media server obtains target obtaining based on novel video circulation code, playing suitable for regarding networked terminals
Video flowing, comprising:
Streaming media server receives the target video stream that transcoding server is sent.
3. according to the method described in claim 2, it is characterized in that, the streaming media server sends the novel video stream
To transcoding server, comprising:
Connection status between streaming media server detection and transcoding server；
The novel video stream is sent to transcoding server when the connection status is successful connection by streaming media server；
Streaming media server ignores the novel video stream when the connection status is connection failure.
4. according to the method in claim 2 or 3, which is characterized in that the transcoding server circulates the novel video
Code is suitable for the target video stream for regarding networked terminals broadcasting, comprising:
The novel video stream is decoded as characteristic video stream by transcoding server；
The characteristic video stream is encoded to by transcoding server is suitable for regarding the target video stream that networked terminals play.
5. according to the method described in claim 4, it is characterized in that, the format of the novel video stream is the H.265 feature
The format of video flowing is YUV, H.264 the format of the target video stream is.
6. according to the method described in claim 5, it is characterized in that, the novel device acquires novel video stream, comprising:
Novel device acquires original video stream；
Novel device inquires the H.265 corresponding Novel encoder；
Novel device calls the Novel encoder that the original video stream is encoded to novel video stream.
7. according to the method described in claim 5, it is characterized in that, the novel video stream is decoded as by the transcoding server
Characteristic video stream, comprising:
Transcoding server inquires the H.265 corresponding new decoders；
Transcoding server calls the new decoders that the novel video stream is decoded as characteristic video stream.
8. according to the method described in claim 4, it is characterized in that, the characteristic video stream is encoded to by the transcoding server
The target video stream played suitable for regarding networked terminals, comprising:
Transcoding server detects load condition；
Transcoding server determines coding parameter according to the load condition；
The characteristic video stream is encoded to the target for being suitable for regarding networked terminals and playing according to the coding parameter by transcoding server
Video flowing.
9. a kind of play system of novel video stream, which is characterized in that novel device, streaming media server are disposed in IP network,
View networked server, view networked terminals are deployed in depending on networking；
The novel device includes novel video stream acquisition module, and the streaming media server includes that target video stream obtains mould
Block, first object video stream module, the view networked server include the second target video stream sending module；
Novel video stream acquisition module, for acquiring novel video stream；
Target video stream obtain module, for obtains based on the novel video circulation code acquisition, suitable for being broadcast depending on networked terminals
The target video stream put；
First object video stream module, for the target video stream to be sent to view networked server；
Second target video stream sending module, for according to view networked terminals configuration downstream communications link, by the target
Video stream is extremely played out depending on networked terminals.
10. system according to claim 9, which is characterized in that the IP network is also deployed with transcoding server, the stream matchmaker
Body server further includes novel video stream sending module, and the transcoding server includes video stream transcoding module:
Novel video stream sending module, for the novel video stream to be sent to transcoding server；
Video stream transcoding module, for being the target video stream played suitable for regarding networked terminals by novel video circulation code；
The video stream transcoding module includes:
Target video stream receiving submodule, for receiving the target video stream of transcoding server transmission.
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