CN108777818A - A method of live streaming software support while multichannel plug-flow - Google Patents
A method of live streaming software support while multichannel plug-flow Download PDFInfo
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- CN108777818A CN108777818A CN201810618947.7A CN201810618947A CN108777818A CN 108777818 A CN108777818 A CN 108777818A CN 201810618947 A CN201810618947 A CN 201810618947A CN 108777818 A CN108777818 A CN 108777818A
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000004048 modification Effects 0.000 claims abstract description 9
- 238000012986 modification Methods 0.000 claims abstract description 9
- 230000006870 function Effects 0.000 claims description 16
- 238000005538 encapsulation Methods 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 238000013461 design Methods 0.000 claims description 3
- VEMKTZHHVJILDY-UHFFFAOYSA-N resmethrin Chemical compound CC1(C)C(C=C(C)C)C1C(=O)OCC1=COC(CC=2C=CC=CC=2)=C1 VEMKTZHHVJILDY-UHFFFAOYSA-N 0.000 claims description 2
- 238000011161 development Methods 0.000 abstract description 2
- 230000002452 interceptive effect Effects 0.000 description 3
- 241001269238 Data Species 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
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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]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/443—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/20—Software design
- G06F8/24—Object-oriented
-
- 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
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
-
- 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
- H04N21/27—Server based end-user applications
- H04N21/274—Storing end-user multimedia data in response to end-user request, e.g. network recorder
- H04N21/2743—Video hosting of uploaded data from client
-
- 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
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Software Systems (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The present invention discloses a kind of method that software support while multichannel plug-flow is broadcast live, pass through the source code of modification " Open Broadcaster Software ", the correlative code of multichannel live streaming is supported in addition, the relevant information that modification part interface is used to that user configuration multichannel to be allowed to be broadcast live, the code stream after the same video encoder and its coding is finally multiplexed in live streaming, the coded audio data for integrating different live streaming protocol requirements again, completes multichannel live streaming.The present invention can be simultaneously by real-time live broadcast content push to different live streaming platforms, and support the multi-way stream of different agreement；Consuming of the software to memory and cpu resource can also be effectively reduced, development cost is saved and is easy to subsequent upgrade and safeguards.
Description
Technical field
The present invention relates to technical field of software development, the method for specially a kind of live streaming software support while multichannel plug-flow.
Background technology
" Open Broadcaster Software " is that one free and that increases income is used for video record and live streaming plug-flow
Software.It can allow user easily and rapidly to start plug-flow on Windows, Mac and Linux, easily share
User's desktop operates, game process, web page browsing process etc.." Open Broadcaster Software " supports various video
Code/decode format, such as H264（X264）Deng a variety of display derived datas that specify of user being broadcast live in real time and synthesize one
It rises；Support a variety of audio coding decoding formats, such as AAC and OPUS etc..It, which gives tacit consent to, supports to use RTMP agreement plug-flows, can be seamless
Plug-flow to the various streaming media servers for supporting RTMP agreements in, such as YouTube, bucket fish etc..
" Open Broadcaster Software " only supports to carry out plug-flow using RTMP agreements at present, but has on the market
Many plug-flow agreements, including some in order to specific purpose oneself definition stream media protocol."Open Broadcaster
Software " is the software using inserter structure, and the form that all functions can be transferred through plug-in unit is expanded, as long as
Meet code requirement, therefore in order to allow " Open Broadcaster Software " can support other plug-flow agreements
A plug-in unit for meeting " Open Broadcaster Software " output inserter specification oneself just must be redefined, at present
The live streaming media service platform for having had some well-known has developed support on " Open Broadcaster Software "
The plug-in unit of oneself proprietary plug-flow agreement.
In practical application, it sometimes appear that such application scenarios, such as game main broadcaster A are desirable for " Open
The live content of oneself can be pushed to two different game by Broadcaster Software " simultaneously when live streaming
It is broadcast live on platform LIVE_1 and LIVE_2, platform LIVE_1 uses RTMP agreements, platform LIVE_2 to be assisted using customized RTP
View.Such application scenarios just need " Open Broadcaster Software " can support the energy for being carried out at the same time multichannel plug-flow
Power, and support the multi-way stream of different agreement.Although " Open Broadcaster Software " is the software increased income,
But the live streaming software being derived on this basis at present can only be supported to be broadcast live all the way.
Invention content
In view of the above-mentioned problems, the purpose of the present invention is to provide one kind capable of increasing function, can not only support while more
Road plug-flow supports different agreements plug-flow simultaneously to different steaming media platforms, and it is internal can also to effectively reduce software
Deposit the method with the live streaming software support while multichannel plug-flow of the consuming of cpu resource.Technical solution is as follows：
A method of live streaming software support while multichannel plug-flow include following steps：
Step 1：" Open Broadcaster Software " newest code is downloaded, installing configuration according to guide relies on library；
Step 2：To design customized stream output protocol, then a source is created under plugins/obs-outputs/ catalogues
Code file myrtp.c, and wherein plug-flow Protocol Plug interface specification is exported according to " Open Broadcaster Software "
Various call back functions are realized in requirement defined in obs_output_info；If being broadcast live what platform was realized using existing third party
The protocol realization is then carried out secondary encapsulation, and exports plug-flow agreement according to " Open Broadcaster Software " by agreement
Requirement defined in card i/f specification obs_output_info carries out secondary encapsulation；
Step 3：OBSBasicSettings and OBSBasic classes are changed, are increased crossfire in OBSBasicSettings classes
The information such as live TV stream server address, secret key, protocol type are configured, increased new stream information is stored in OBSBasic and increases newly
In the variable of the OBSService types added；
Step 4：Change window-basic-main-outputs.hpp files, according to step 3 configure multichannel plug-flow scheme,
Increase new OBSOutput to BasicOutputHandler classes, increases the road of the number and configuration plug-flow of new OBSOutput
Number is corresponding；
Step 5：The SimpleOutput classes in window-basic-main-outputs.cpp files are changed, according in step 4
Increased OBSOutput carrys out respectively each output corresponding audio coder of stream configuration；
Step 6：The constructed fuction of SimpleOutput classes is changed, is inside step in the way of similar rtmp agreements output
5 increased new OBSOutput are initialized, while adding the initialization to audio coder rtp_auidoEncoder；
Newly added output streamOutput_rtp is mounted to beginning, the stopping event that the user interface of plug-flow software generates
In call back function pointer alignment；
Step 7：StartStreaming functions are changed, are added in such a way that similar rtmp outputs start pair
The startup of streamOutput_rtp, the audio coder that streamOutput_rtp is arranged are the rtp_ that front creates
auidoEncoder；
Step 8：Change SimpleOutput::SetupOutputs functions, by rtmp output stream in the way of be
StreamOutput_rtp increases coded audio data, and source encodes for rtp_auidoEncoder encoders；
Step 9：The code that other control stream mode switching processes are related to is changed according to the method described above, and is connected in the interfaces UI
Control logic.
Further, increase the OBSService types of reception multichannel plug-flow configuration information in modification in the step 3
It modifies as needed when variable, if only increasing plug-flow all the way, additionally increases the variable of an OBSService type, if
It is additional to increase multichannel plug-flow, then it is preserved with a container.
Further, it is directly multiplexed if being aac if the streamed audio coding and decoding scheme of current mainstream in the step 5
Otherwise the encoder of the rtmp plug-flow agreements of acquiescence increases a new OBSEncoder audio coder.
Further, it when video encoder being set to newly increase output stream in the step 7 and step 8, is directly multiplexed
The h264Streaming of rtmp.
The beneficial effects of the invention are as follows：The present invention is the live streaming software " Open Broadcaster Software " of prevalence
Multichannel while the ability of plug-flow are provided, solving use " Open Broadcaster Software " single can only push away RTMP
Protocol streams and the problem of self-defined plug-flow agreement cannot be exported simultaneously.It can allow a main broadcaster user simultaneously by the real-time straight of oneself
Content push is broadcast to different live streaming platforms, and supports the multi-way stream of different agreement.Remodeling method provided by the invention needs
The source code of modification is few, and increased multichannel plug-flow realizes existing resource multiplexing to greatest extent, such as is multiplexed and most expends
The Video Codec of computing resource realizes and allows " Open Broadcaster Software " to support with smaller transformation cost
It is smooth that the ability of multichannel plug-flow compares the same operation with the software of original version.Need the application of progress multi-channel video live streaming
The step of scene developer is according to introducing does not need big change and can be realized, and can save development cost and be easy to subsequent upgrade
With maintenance.
Description of the drawings
Fig. 1 is the process structure figure of the present invention.
Fig. 2 is using flow chart when realizing of the invention.
Specific implementation mode
The present invention is described in further details in the following with reference to the drawings and specific embodiments.As shown in Figure 1, " Open
The kernel of Broadcaster Software " is broadly divided into two parts：
(1) " obs " is responsible for the management of user interface, including generates user interface, is responded etc. to user's operation, simultaneously
It is also responsible for the configuration file that management interactive interface user's operation generates；" Open Broadcaster Software " is one and adopts
With the software of plug-in type framework, therefore most of additional functionality all relies on independent plug-in unit to run, and therefore " obs " is also needed
Corresponding plug-in unit is loaded according to user configuration, and the life cycle of plug-in unit is managed, such as load, destruction, stopping etc.
Deng；
(2) " libobs " is mainly responsible for the management of video and audio coding, the management of output stream obsoutput；The weight of the present invention
It is exactly to increase the way to manage of modification obsoutput to want step, and obsoutput is responsible for encapsulation manager and exports stream all the way, including will
The good audio and video of encoding and decoding are sent to output stream, carry out corresponding state control etc..Really it is responsible for push Streaming Media to net cast
Platform is to push away two-way stream matchmaker simultaneously here as can be seen from Figure 1 by supporting the plug-in unit of different live streaming media agreements to complete
Body is to different live streaming platforms, and one of live streaming media agreement is rtmp, and one is customized rtp live streamings agreement.
The method of the live streaming software support of the present embodiment multichannel plug-flow simultaneously passes through modification " Open Broadcaster
The correlative code of multichannel live streaming is supported in the source code of Software ", addition, and modification part interface is for making user configuration multichannel straight
The relevant information broadcast finally is multiplexed the code stream after the same video encoder and its coding in live streaming and integrates different live streaming associations again
The coded audio data that view requires completes multichannel live streaming, and this method can effectively reduce software to memory and cpu resource
It expends, and completely supports multichannel live streaming.
In order to preferably realize the present invention, is explained in detail in conjunction with shown in Fig. 2 and realize that the step of the present invention is as follows：
Step 1：From the network address https that increases income://github.com/obsproject/obs-studio downloads " Open
The newest codes of Broadcaster Software " install configuration according to guide and rely on library.
Step 2：It, then must be under plugins/obs-outputs/ catalogues if necessary to design the stream output protocol of oneself
A sound code file is created, and exports plug-flow Protocol Plug interface according to " Open Broadcaster Software " wherein
Various call back functions are realized in requirement defined in specification obs_output_info.Assuming that user will be " Open Broadcaster
Software " increases a new customized live streaming and exports plug-flow Real-time Transport Protocol plug-in unit, source file myrtp.c；So at this
Various times met defined in obs output plug-flow Protocol Plug interface specifications obs_output_info must be realized in a file
Letter of transfer number, such as void * (* create) (obs_data_t * settings, obs_output_t * output) this letter
Number pointer is just used to refer to be used to create the function of output example to plug-in unit.
If to utilize existing each third party that the agreement that platform is realized is broadcast live, need by their protocol realization into
Row secondary encapsulation, and according to " Open Broadcaster Software " output plug-flow Protocol Plug interface specification obs_
Requirement defined in output_info carries out secondary encapsulation.
Step 3：OBSBasicSettings classes and corresponding QT interface files OBSBasicSettings.ui are changed,
Increase the information of user configuration multi-way stream, such as address, secret key, the protocol type etc. of configuration plug-flow platform in interface file, most
It changes OBSBasicSettings again afterwards and realizes user's interactive action.
Step 4：OBSBasic classes are changed, modification wherein increases the OBSService classes for receiving multichannel plug-flow configuration information
The variable of type can modify here according to the needs of oneself, additional to increase by one if only increasing plug-flow all the way
The variable of OBSService types；Such as rtp_service.
Step 5：Window-basic-main-outputs.hpp files are changed, according to the multichannel plug-flow scheme of step 4,
Increase new OBSOutput to BasicOutputHandler classes, how many roads plug-flow is configured in step 4 and is increased by how many newly
OBSOutput.It is additional to increase by one, such as rtp_streamOutput if only increasing plug-flow all the way.
Step 6：The SimpleOutput classes in window-basic-main-outputs.cpp files are changed, according to step
Increased OBSOutput carrys out respectively each output corresponding audio coder of stream configuration in rapid 5, pays attention to the stream of current mainstream
Media audio coding and decoding scheme is aac either opus, and the coding of the rtmp plug-flow agreements of acquiescence is then directly multiplexed if it is aac
Otherwise device increases corresponding encoder；Such as rtp_auidoEncoder.
Step 7：The constructed fuction of SimpleOutput classes is changed, inside according to the side of similar acquiescence rtmp agreements output
Formula is that the increased new OBSOutput of step 5 is initialized, and the object after initialization is added to opening for software foreground interface
In the event call-back function queue of beginning, stopping etc., the action event notice of user could be normally obtained in this way；Step 6 is added
Audio coder initialized；Newly added output streamOutput_rtp is such as mounted to the user of plug-flow software
In the event call-back function pointer queue of beginning, the stopping that interactive interface generates etc., the operation of user could be normally obtained in this way
Event notifies and then carries out corresponding response.
Step 8：The StartStreaming functions for changing SimpleOutput classes are opened according to similar acquiescence rtmp stream outputs
Dynamic mode is added new OBSOutput increased to step 5 and is started, while the audio coder of new OBSOutput is arranged
For the audio coder created is corresponded in step 6 respectively；It should be noted that the new Video coding of establishment that here should not be additional
Device is directly multiplexed the h264Streaming of rtmp, can effectively reduce the consuming of calculated performance, Video coding in this way
Device expends computing resource very much；
Step 9：Change SimpleOutput::SetupOutputs functions are step in the way of similar acquiescence rtmp output streams
Rapid 5 increased new OBSOutput setting coded audio datas source is to correspond to the audio coder created in step 6 respectively,
Notice that the video data encoder source that new OBSOutput to be arranged here will be multiplexed the h264Streaming of acquiescence rtmp streams；
Step 10：The code that some other control stream mode switching process etc. is related to is changed according to similar thinking, and connects UI
Some control logics in interface.
Claims (4)
1. a kind of method of live streaming software support while multichannel plug-flow, which is characterized in that include the following steps：
Step 1：" Open Broadcaster Software " newest code is downloaded, installing configuration according to guide relies on library；
Step 2：To design customized stream output protocol, then a source is created under plugins/obs-outputs/ catalogues
Code file myrtp.c, and wherein plug-flow Protocol Plug interface specification is exported according to " Open Broadcaster Software "
Various call back functions are realized in requirement defined in obs_output_info；If being broadcast live what platform was realized using existing third party
The protocol realization is then carried out secondary encapsulation, and exports plug-flow agreement according to " Open Broadcaster Software " by agreement
Requirement defined in card i/f specification obs_output_info carries out secondary encapsulation；
Step 3：OBSBasicSettings and OBSBasic classes are changed, are increased crossfire in OBSBasicSettings classes
The information such as live TV stream server address, secret key, protocol type are configured, increased new stream information is stored in OBSBasic and increases newly
In the variable of the OBSService types added；
Step 4：Change window-basic-main-outputs.hpp files, according to step 3 configure multichannel plug-flow scheme,
Increase new OBSOutput to BasicOutputHandler classes, increases the road of the number and configuration plug-flow of new OBSOutput
Number is corresponding；
Step 5：The SimpleOutput classes in window-basic-main-outputs.cpp files are changed, according in step 4
Increased OBSOutput carrys out respectively each output corresponding audio coder of stream configuration；
Step 6：The constructed fuction of SimpleOutput classes is changed, is inside step in the way of similar rtmp agreements output
5 increased new OBSOutput are initialized, while adding the initialization to audio coder rtp_auidoEncoder；
Newly added output streamOutput_rtp is mounted to beginning, the stopping event that the user interface of plug-flow software generates
In call back function pointer alignment；
Step 7：StartStreaming functions are changed, are added in such a way that similar rtmp agreements output starts pair
The startup of streamOutput_rtp, the audio coder that streamOutput_rtp is arranged are the rtp_ that front creates
auidoEncoder；
Step 8：Change SimpleOutput::SetupOutputs functions, by rtmp output stream in the way of be
StreamOutput_rtp increases coded audio data, and source encodes for rtp_auidoEncoder encoders；
Step 9：The code that other control stream mode switching processes are related to is changed according to the method described above, and is connected in the interfaces UI
Control logic.
2. the method for live streaming software support according to claim 1 while multichannel plug-flow, which is characterized in that the step 3
In modification increase receive multichannel plug-flow configuration information OBSService types variable when modify as needed, if only
Increase plug-flow all the way, then additionally increase the variable of an OBSService type, if additionally increasing multichannel plug-flow, is held with one
Device preserves.
3. the method for live streaming software support according to claim 1 while multichannel plug-flow, which is characterized in that the step 5
In be aac if the streamed audio coding and decoding scheme of current mainstream if be directly multiplexed acquiescence rtmp plug-flow agreements encoder,
Otherwise increase a new OBSEncoder audio coder.
4. the method for live streaming software support according to claim 1 while multichannel plug-flow, which is characterized in that the step 7
When in step 8 to newly increase output stream setting video encoder, it is directly multiplexed the h264Streaming of rtmp.
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| CN108777818B (en) | 2020-07-14 |
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