CN102075745A - Device and method for dynamically configuring input and output of video coder-transcoder - Google Patents
Device and method for dynamically configuring input and output of video coder-transcoder Download PDFInfo
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Abstract
The invention discloses a method for dynamically configuring the input and output of a video coder-transcoder, which comprises the following steps that: a plurality of input and output templates of the video coder-transcoder are established, and different templates have different numbers of input and output signals and different coding parameters; and equipment changes the currently used template through visual operation of a user, and a coding kernel module and a management interface module of the equipment are adaptively matched with the current template. By the method, coding-transcoding equipment can flexibly configure the number of the input and output signals and different output specific coding parameters according to the actual requirement of the user.
Description
Technical field
The invention belongs to field of video processing, relate to a kind of video and compile transcoder input and output Dynamic Configuration.
Background technology
Video is compiled transcoder equipment and is mainly used in the front-end processing system of telecommunications, the Internet, broadcasting and TV and mobile network video traffic, can with do not compress or the original audio/video flow coding of high bandwidth or transcoding for adapting to the video flowing of different transmission networks, multiple playback terminal.
In the practical application of compiling transcoder equipment, need handle the multichannel input signal source simultaneously usually, and disposal ability is limited a volumes/transcoding equipment time, so a complete time trans-coding system need dispose multiple devices usually.Disposal ability is different in the time of different equipment, as handling 1 road input signal source simultaneously, then is commonly referred to 1 pipeline equipment, can handle 4 road input signal sources simultaneously, then is commonly referred to 4 pipeline equipments.
Traditional volume transcoder equipment, for 1 road input signal source, only need coding 1 tunnel output signal, but development along with three screen unifications, the integration of three networks, same signal source, often need the multichannel output signal to support different networks and different playback terminals, as exporting the TS code stream of 2Mbps bandwidth simultaneously, support the IPTV terminal, the Flash code stream of 800Kbps bandwidth, support the PC terminal, the HTTP-TS code stream of 300Kbps bandwidth is supported the iphone terminal, the RTP code stream of 256Kbps bandwidth, support the android terminal, or the like.
Current video is compiled in the transcoder practical application institute and is faced a major issue and be: under the different application scene, and same signal source, it is different needing the code stream specification and the quantity of output.As: certain broadcasting and TV company, current needs to build the live platform of internet video, then only is required to be 1 and advances 1 coding mode that goes out, follow-uply, the IPTV platform construction then need 1 to advance 2 coding modes that go out for needing, and follow-up again, for the construction of 3G steaming media platform needs, then need to dispose 1 and advance 4 coding modes that go out.Simultaneously, in the process of networking, even be with a kind of user terminal, the bandwidth setting also may be different, as early stage the Internet access bandwidth lower, then the output of this road is set to the 400Kbps bandwidth, and if follow-up local the Internet access bandwidth complete upgrading, then this road output is set to the 800Kbps bandwidth, can obtain video image quality preferably like this.
The user is when buy compiling transcoder like this, and as selecting to compile the transcoder model by present case adapting to current input and output quantity, and when subsequent scenario changes, encoder can't satisfy demand at this moment, face the problems such as waste of existing device.
For solution changes because of actual conditions, and cause the way of output signal and the scheme that coding parameter changes, several implementations arranged at present, but all have very big defective:
1) same input source disposes respectively by a plurality of input sources
Utilize signal distributor to be divided into multiple signals 1 road input signal, enter into the different inputs of volume/transcoder, encode respectively again.When the output signal of needs increases, then need increase the quantity of encoder device.
This scheme is with the lifting means integrated cost: common signal has: SDI, HDMI, AV, ASI or the like, for these signals, configuration earth signal distributor more than a minute all needs to increase cost, after multiple signals after simultaneously more than one minute are input to volume/transcoder, also need dispose a plurality of input acquisition modules, this has also increased cost.
2) output by maximum possible is provided with
To compile/transcoder is configured to 1 tunnel input, the pattern of multichannel output, and the way of output is more than or equal to the maximum possible in the actual conditions.The prerequisite of this scheme is that volume/transcoder support 1 advances to have more pattern, and the way of output is abundant, and promptly code capacity is enough powerful.
This scheme, when actual conditions do not need maximum output way, the environment division resource will be left unused, and then cause user cost to rise.
3) transform configuration codes device equipment again
When actual conditions change, return manufacturer's place's reforming equipment, transform the output mode of hope as.Prerequisite is that equipment vendors support this transformation.
This scheme needs manufacturer specially equipment to be transformed, and the user can't change voluntarily, uses dumb for equipment.
Summary of the invention
The present invention provides a kind of video to compile transcoder input and output Dynamic Configuration in order to address the above problem.
The concrete technical scheme of the present invention is as follows: a kind of video is compiled transcoder input and output Dynamic Configuration, set up video and compile a plurality of inputs, the output template of transcoder, different templates has different input and output signal quantity and coding parameter, change current use template by the visual operation equipment that makes, compile transcoding device coding kernel module and administration interface module will with when the front template Adaptive matching, make that compiling transcoding equipment disposes the number of signals of importing with output flexibly by user's actual needs, and the different specific coding parameter of exporting.
S100. test same model video and compile the input signal quantity of transcoding equipment, corresponding output signal quantity and the coding parameter combined information of every road input, set up a plurality of inputs, the output template that adapts with described model video volume transcoding equipment according to the information of above-mentioned test, and this group input, output template are disposed at video and compile in the transcoding equipment;
S200. the user changes current use template by the visual method of operation equipment that makes;
S300. video is compiled transcoding equipment according to the template of selecting for use, input module, coding module and administration interface and the described template of selecting for use of compiling transcoder are mated automatically, make that compiling transcoding equipment can possess specific input signal quantity, the output signal quantity of every road input correspondence and the specific coding parameter of different outputs by current template configuration.
In the S100 step, the video of testing a plurality of models is compiled input, output and the coding parameter combined information of transcoding equipment, the information of described test comprises the be provided with scope of the output channel quantity of inputting channel quantity, each inputting channel, the maximum encoded bandwidth of each output channel, maximum code distinguishability, coding parameter.
Described coding parameter comprises: the quantity of multi-reference frame, whether can adopt B Frame coding mode, whether can adopt CABAC entropy coding pattern, the highest coding quality, whether support the 8x8 coding mode.
Described step 100 specifically comprises,
S101 tests same model video and compiles the input signal quantity of transcoding equipment, corresponding output signal quantity and the coding parameter combined information of every road input;
S102 sets up input, the output template that adapts according to the information of above-mentioned test;
S103, set up described template after, above-mentioned information is formed the template configuration file by the template Core Generator, different templates has different template configuration files;
S104 with being fit to a plurality of template files of the video volume transcoding equipment of same model, pre-deposits video and compiles in the storage device of transcoding equipment before dispatching from the factory.
The S200 step more specifically is: with visual way selection of configuration masterplate, input, output masterplate adopt intuitively diagrammatic form to represent by the administration interface module.
The S300 step more specifically is: each module of coding that video is compiled transcoding equipment all dynamically determines its mode of operation by the template of current configuration, all adopt the resource dynamic distribution mechanism, computational resource, memory source and I/O resource all rely on the current template configuration file of selecting for use and dynamic auto coupling.
The S300 step comprises that also the administration interface module of video volume transcoding equipment will be according to the inputting channel quantity that is provided with in the masterplate, output channel quantity, and the maximum changing range of coding parameter, the corresponding displaying contents at decision interface.Specifically comprise the inputting channel tabulation at main interface, each inputting channel the sub-channel quantity of output listed in the administration page is set in detail, and each exports the coding parameter selectable range of sub-channel.
A kind of video is compiled transcoder equipment, has stored a plurality of inputs, output template in the equipment;
Equipment comprises the masterplate choice device: the user of equipment can utilize the masterplate choice device in the administration interface module of equipment, selects the masterplate of current needs in visual form;
Equipment comprises the automatic coalignment of template: each module that is used to encode all dynamically determines its mode of operation by the template of current configuration, each module all adopts the resource dynamic distribution mechanism, and computational resource, memory source and I/O resource all rely on the current template configuration file of selecting for use and dynamic auto coupling.Simultaneously under automatic coalignment effect, the administration interface module of equipment also will present the content that matches automatically by current masterplate, concrete then comprise the inputting channel tabulation at main interface, each inputting channel the sub-channel quantity of output listed in the administration page is set in detail, and each exports the coding parameter selectable range of sub-channel.
Invention effect: same signal source, satisfy multiple output signal to support different networks and different playback terminals, make that compiling transcoding equipment can dispose the number of signals of input and output flexibly by user's actual needs, and the different concrete parameter of exporting of cataloged procedure.
Concrete embodiment
Central idea of the present invention is to set up at video to compile input, the output template mechanism of changeing device, and has adopted coding kernel software module and template Adaptive matching, administration interface and template to mate automatically.
S100. set up input, output template mechanism
This programme is tested its possible input, output and coding parameter combination at same model device, sets up template, and is disposed in the equipment.The formation, Stencil Production, the file storage mechanism of masterplate and the installation several sections of masterplate file that specifically are divided into masterplate.
S101 tests input, output and coding parameter combined information that same model video is compiled transcoding equipment;
At the equipment of different model, all need design and test its possible masterplate respectively.
The formation of test parameter: template is by inputting channel quantity, and the parameters such as be provided with scope of the output channel quantity of each inputting channel, the maximum encoded bandwidth of each output channel, maximum code distinguishability, coding parameter constitute.
Wherein coding parameter comprises: the quantity of multi-reference frame; Whether can adopt B Frame coding mode; Whether can adopt CABAC entropy coding pattern; The highest coding quality; Whether support the 8x8 coding mode;
During test, whether primary part observation equipment can be designed and operate as normal by masterplate, particularly will carry out roasting for a long time machine operation respectively at different film sources.
S102. Stencil Production
According to the information of above-mentioned test, set up the input, the output template that adapt with equipment; Emphasis will be considered the market demand, equipment performance during design, and decide each parameter of masterplate according to this.
S103. the file storage mechanism of masterplate
Behind the template definition, above-mentioned information is formed the template configuration file by the template Core Generator.Different templates has different template configuration files.
The masterplate configuration file is the file mirror image of following data structure:
pattern_channel_count
pattern_subchannel_count
struct?CHANNEL_PATTERN
{
DWORD?max_bitrate;
DWORD?max_width;
DWORD?max_height;
BYTE cabac_flag;
BYTE bframes_flag;
BYTE multiref_flag;
BYTE reflex_flag;
BYTE quality;
BYTE high_8x8;
};
S104. the installation of masterplate file
With being fit to a plurality of template files of certain equipment, all before dispatching from the factory, equipment pre-deposits in the storage device of equipment.
S200. the user can carry out the visual operation equipment that makes by the masterplate choice device of equipment and changes current use template, particularly, can be by the administration interface module with visual way selection of configuration masterplate, masterplate adopts intuitively diagrammatic form to represent.The masterplate choice device: the user of equipment can utilize the masterplate choice device in the administration interface module of equipment, selects the masterplate of current needs in visual form;
S300. compile input, coding module and the administration interface of transcoder, can make that compiling transcoding equipment can possess specific input, output quantity and coding parameter by current template configuration according to template by automatic coalignment Adaptive matching.
Each module of encoding all dynamically determines its mode of operation by the template of current configuration, all adopts the resource dynamic distribution mechanism, comprises that computational resource, memory source and I/O resource all rely on the current template configuration file of selecting for use and dynamically divides.
Automatic coalignment, each module that is used to encode all dynamically determines its mode of operation by the template of current configuration, all adopts the resource dynamic distribution mechanism, computational resource, memory source and I/O resource all rely on the current template configuration file of selecting for use and dynamic auto coupling.
A) input module is at the template Adaptive matching:
According to the maximum inputting channel quantity in the masterplate file, the configuration module operational factor, only start the inputting channel of this quantity in advance, as user during at a certain inputting channel of actual startups of administration interface, input module will drive this channel execution and import work such as collection, audio frequency and video preliminary treatment.Wherein importing collecting part will determine with user's actual selection to wait from Ethernet interface, SDI module, ASI module, AV module, HDMI module and obtain data according to current device configuration.
B) coding module is at the template Adaptive matching:
According to the maximum output channel quantity in the masterplate file, coding module will be reserved the coding resource of this quantity for each inputting channel, comprise the needed memory headroom of cataloged procedure, the required computational resource of coding.When the sub-channel of output of certain inputting channel of the actual startup of user, these reserved resource will begin to carry out actual coding and output services.The concrete parameter of coding will will not be higher than the maximum parameter of masterplate file defined simultaneously by the parameter decision that subscriber administration interface transmitted.
3) administration interface and template are mated automatically:
After present equipment was set to a certain masterplate, administration interface will be according to the inputting channel quantity that is provided with in the masterplate, output channel quantity, and the maximum changing range of coding parameter, the corresponding displaying contents at decision interface.
Concrete then comprise the inputting channel tabulation at main interface, each inputting channel the sub-channel quantity of output listed in the administration page is set in detail, and each exports the coding parameter selectable range of sub-channel.
More than; only be preferred embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement, all should be encompassed in protection scope of the present invention in.Therefore, protection scope of the present invention should be as the criterion with the protection range that claim was defined.
Claims (9)
1. a video is compiled transcoder input and output Dynamic Configuration, it is characterized in that: set up a plurality of inputs, output template that video is compiled transcoder, different templates has different input and output signal quantity and coding parameter, change current use template by the visual operation equipment that makes, compile transcoding device coding kernel module and administration interface module will with when the front template Adaptive matching, make that compiling transcoding equipment disposes the number of signals of importing with output flexibly by user's actual needs, and the different specific coding parameter of exporting.
2. video according to claim 1 is compiled transcoder input and output Dynamic Configuration, it is characterized in that:
S100. test same model video and compile the input signal quantity of transcoding equipment, corresponding output signal quantity and the coding parameter combined information of every road input, set up a plurality of inputs, the output template that adapts with described model video volume transcoding equipment according to the information of above-mentioned test, and this group input, output template are disposed at video and compile in the transcoding equipment;
S200. the user changes current use template by the visual method of operation equipment that makes;
S300. video is compiled transcoding equipment according to the template of selecting for use, input module, coding module and administration interface and the described template of selecting for use of compiling transcoder are mated automatically, make that compiling transcoding equipment can possess specific input signal quantity, the output signal quantity of every road input correspondence and the specific coding parameter of different outputs by current template configuration.
3. video according to claim 2 is compiled transcoder input and output Dynamic Configuration, it is characterized in that: in the S100 step, the video of testing a plurality of models is compiled input, output and the coding parameter combined information of transcoding equipment, the information of described test comprises the be provided with scope of the output channel quantity of inputting channel quantity, each inputting channel, the maximum encoded bandwidth of each output channel, maximum code distinguishability, coding parameter.
4. video according to claim 3 is compiled transcoder input and output Dynamic Configuration, and it is characterized in that: described coding parameter comprises: the quantity of multi-reference frame, whether can adopt B Frame coding mode, whether can adopt CABAC entropy coding pattern, the highest coding quality, whether support the 8x8 coding mode.
5. video according to claim 2 is compiled transcoder input and output Dynamic Configuration, it is characterized in that: described step 100 specifically comprises,
S101 tests same model video and compiles the input signal quantity of transcoding equipment, corresponding output signal quantity and the coding parameter combined information of every road input;
S102 sets up input, the output template that adapts according to the information of above-mentioned test;
S103, set up described template after, above-mentioned information is formed the template configuration file by the template Core Generator, different templates has different template configuration files;
S104 with being fit to a plurality of template files of the video volume transcoding equipment of same model, pre-deposits video and compiles in the storage device of transcoding equipment before dispatching from the factory.
6. video according to claim 2 is compiled transcoder input and output Dynamic Configuration, it is characterized in that: the S200 step more specifically is: with visual way selection of configuration masterplate, input, output masterplate adopt intuitively diagrammatic form to represent by the administration interface module.
7. video according to claim 2 is compiled transcoder input and output Dynamic Configuration, it is characterized in that: the S300 step more specifically is: each module of coding that video is compiled transcoding equipment all dynamically determines its mode of operation by the template of current configuration, all adopt the resource dynamic distribution mechanism, computational resource, memory source and I/O resource all rely on the current template configuration file of selecting for use and dynamic auto coupling.
8. video according to claim 2 is compiled transcoder input and output Dynamic Configuration, it is characterized in that: the S300 step also comprises, the administration interface module of video volume transcoding equipment will be according to the inputting channel quantity that is provided with in the masterplate, output channel quantity, and the maximum changing range of coding parameter, the corresponding displaying contents at decision interface, specifically comprise the inputting channel tabulation at main interface, each inputting channel the sub-channel quantity of output listed in the administration page is set in detail, and each exports the coding parameter selectable range of sub-channel.
9. implement a kind of video of the described method of claim 1 and compile transcoder equipment, it is characterized in that:
A plurality of inputs, output template have been stored in the equipment;
Equipment comprises the masterplate choice device: the user of equipment can utilize the masterplate choice device in the administration interface module of equipment, selects the masterplate of current needs in visual form;
Equipment comprises the automatic coalignment of template: each module that is used to encode all dynamically determines its mode of operation by the template of current configuration, each module all adopts the resource dynamic distribution mechanism, computational resource, memory source and I/O resource all rely on the current template configuration file of selecting for use and dynamic auto coupling, simultaneously under automatic coalignment effect, the administration interface module of equipment also will present the content that matches automatically by current masterplate, concrete then comprise the inputting channel tabulation at main interface, each inputting channel the sub-channel quantity of output listed in the administration page is set in detail, and each exports the coding parameter selectable range of sub-channel.
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