CN102075745B - 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 coder-transcoder input and output Dynamic Configuration.
Background technology
Video coder-transcoder equipment 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, usually need to process simultaneously the multichannel input signal source, and disposal ability is limited when a volumes/transcoding equipment, so a complete time trans-coding system need to configure multiple devices usually.Disposal ability is different in the time of different equipment, as processing simultaneously 1 road input signal source, then is commonly referred to 1 pipeline equipment, can process simultaneously 4 road input signal sources, 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 the development along with three screen unifications, the integration of three networks, same signal source, often need multipath output signals to support different networks and different playback terminals, as exporting simultaneously the TS code stream of 2Mbps bandwidth, 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, etc.
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 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 for needing, the IPTV platform construction then need 1 to advance 2 coding modes that go out, and follow-up again, for the construction of 3G steaming media platform needs, then need to configure 1 and advance 4 coding modes that go out.Simultaneously, in the process of networking, even be the same 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 preferably video image quality 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 at this moment demand, 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 large defective:
1) same input source configures 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 etc., 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 configure a plurality of input acquisition modules, this has also increased cost.
2) output by maximum possible arranges
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 namely 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) again transform configuration codes device equipment
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 coder-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 coder-transcoder input and output Dynamic Configuration, set up a plurality of inputs, the output template of video coder-transcoder, different templates has different input and output signal quantity and coding parameter, come so that the current use template of equipment changing by visual operation, compile transcoding device coding kernel module and administration interface module will with when the front template Adaptive matching, so that compile transcoding equipment configures input and output flexibly by user's actual needs number of signals, 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 comes so that the current use template of equipment changing by visual method of operation;
S300. video is compiled transcoding equipment according to the template of selecting, compile input module, coding module and administration interface and the described template Auto-matching of selecting of transcoder, can possess by current template configuration specific input signal quantity, the output signal quantity of every road input correspondence and the specific coding parameter of different outputs so that compile transcoding equipment.
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 arranged 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 mode, 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 exchange is crossed the template Core Generator forms the template configuration file, 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: configure the selection masterplate by the administration interface module in visual mode, input, output masterplate adopt intuitively that diagrammatic form represents.
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 and dynamic auto coupling.
The S300 step also comprises, video is compiled the administration interface module of transcoding equipment will be according to the inputting channel quantity that arranges in the masterplate, and output channel quantity, and the maximum changing range of coding parameter determine the corresponding displaying contents at 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 coder-transcoder equipment has been 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 in visual form the masterplate of current needs;
Equipment comprises the template automatic matching device: be used for each module of coding and all dynamically determine 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 and dynamic auto coupling.Simultaneously under the automatic matching device effect, the administration interface module of equipment also will present by current masterplate the content that matches automatically, 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, can flexibly configuration input and the number of signals of exporting by user's actual needs so that compile transcoding equipment, and the cataloged procedure design parameter of different outputs.
The implementation example
Central idea of the present invention is to set up for video to compile input, the output template mechanism that turns device, and has adopted coding kernel software module and template Adaptive matching, administration interface and template Auto-matching.
S100. set up input, output template mechanism
This programme is tested its possible input, output and coding parameter combination for same model device, sets up template, and is disposed in the equipment.Specifically be divided into the formation of masterplate, the making of masterplate, the file memory mechanism of masterplate and the several parts of installation of masterplate file.
S101 tests input, output and coding parameter combined information that same model video is compiled transcoding equipment;
For the equipment of different model, all need design respectively and test its possible masterplate.
The formation of test parameter: template is by inputting channel quantity, and the parameters such as arranged scope of the output channel quantity of each inputting channel, the maximum encoded bandwidth of each output channel, maximum code distinguishability, coding parameter consist of.
Wherein coding parameter comprises: the quantity of multi-reference frame; Whether can adopt B Frame coding mode; Whether can adopt CABAC entropy coding mode; The highest coding quality; Whether support the 8x8 coding mode;
During test, whether primary part observation equipment can be worked by the masterplate design, particularly will bake for a long time respectively the machine operation for different film sources.
S102. the making of masterplate
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 the parameters of masterplate according to this.
S103. the file memory mechanism of masterplate
Behind the template definition, above-mentioned information exchange is crossed the template Core Generator form the template configuration file.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 by the masterplate choice device of equipment visual operation so that the current use template of equipment changing, particularly, can configure the selection masterplate in visual mode by the administration interface module, masterplate adopts intuitively that diagrammatic form represents.The masterplate choice device: the user of equipment can utilize the masterplate choice device in the administration interface module of equipment, selects in visual form the masterplate of current needs;
S300. compile input, coding module and the administration interface of transcoder, can according to template by the automatic matching device Adaptive matching, can possess by current template configuration specific input, output quantity and coding parameter so that compile transcoding equipment.
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 and dynamically divides.
Automatic matching device is used for each module of coding and all dynamically determines its mode of operation by the template of current configuration, 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 and dynamic auto coupling.
A) input module is for the template Adaptive matching:
According to the maximum inputting channel quantity in the masterplate file, the configuration module operational factor, only start in advance the inputting channel of this quantity, as user during at a certain inputting channel of actual startups of administration interface, input module will drive this channel execution and input the work such as collection, audio frequency and video preliminary treatment.Wherein inputting collecting part will determine to obtain data from Ethernet interface, SDI module, ASI module, AV module, HDMI module etc. with user's actual selection according to the current device configuration.
B) coding module is for the template Adaptive matching:
According to the maximum output channel quantity in the masterplate file, coding module will be reserved for each inputting channel the coding resource of this quantity, 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, the resource of these reservations will begin to carry out actual coding and output services.The design parameter of coding will be determined by the parameter that subscriber administration interface transmits, will not be higher than simultaneously the maximum parameter of masterplate file defined.
3) administration interface and template Auto-matching:
After present equipment was set to a certain masterplate, administration interface will be according to the inputting channel quantity that arranges 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.
Above; be preferred embodiment of the present invention only, but protection scope of the present invention is not limited to this, 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 coder-transcoder is inputted and the output Dynamic Configuration, it is characterized in that: a plurality of inputs of setting up video coder-transcoder, output template, 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 that adapt with described model video volume transcoding equipment according to the information of above-mentioned test, output template, and with this group input, output template is disposed at video and compiles in the transcoding equipment, different templates has different input and output signal quantity and coding parameter, come so that the current use template of equipment changing by visual operation, compile transcoding device coding kernel module and administration interface module will with when the front template Adaptive matching, so that compile transcoding equipment configures input and output flexibly by user's actual needs number of signals, and the different specific coding parameter of exporting.
2. video coder-transcoder input according to claim 1 and output Dynamic Configuration 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 comes so that the current use template of equipment changing by visual method of operation;
S300. video is compiled transcoding equipment according to working as front template, compile input module, coding module and administration interface and the described front template Auto-matching of working as of transcoder, can possess by current template configuration specific input signal quantity, the output signal quantity of every road input correspondence and the specific coding parameter of different outputs so that compile transcoding equipment.
3. video coder-transcoder input according to claim 2 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 arranged 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 coder-transcoder according to claim 3 input and output Dynamic Configuration, 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 mode, the highest coding quality, whether support the 8x8 coding mode.
5. video coder-transcoder according to claim 2 input and output Dynamic Configuration is characterized in that: described step S100 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 exchange is crossed the template Core Generator forms the template configuration file, 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 coder-transcoder input according to claim 2 and output Dynamic Configuration, it is characterized in that: the S200 step more specifically is: configure the selection masterplate by the administration interface module in visual mode, input, output masterplate adopt intuitively that diagrammatic form represents.
7. video coder-transcoder input according to claim 2 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/0 resource all rely on the current template configuration file of selecting and dynamic auto coupling.
8. video coder-transcoder input according to claim 2 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 arranges in the masterplate, output channel quantity, and the maximum changing range of coding parameter determines the corresponding displaying contents at 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 coder-transcoder equipment of the described method of claim 1, it is characterized in that:
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 in visual form the masterplate of current needs;
Equipment comprises the template automatic matching device: be used for each module of coding and all dynamically determine 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/0 resource all rely on the current template configuration file of selecting and dynamic auto coupling, simultaneously under the automatic matching device effect, the administration interface module of equipment also will present by current masterplate the content that matches automatically, 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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| WO2013082750A1 (en) * | 2011-12-06 | 2013-06-13 | 华为技术有限公司 | Real-time transcoding method and device |
| CN104219543B (en) * | 2013-05-31 | 2018-02-16 | 中国电信股份有限公司 | Mobile terminal carries out method, system and the mobile terminal that Streaming Media transmits in real time |
| CN107783866A (en) * | 2016-08-26 | 2018-03-09 | 法乐第(北京)网络科技有限公司 | The method of testing and device of a kind of multimedia equipment |
| CN107071562A (en) * | 2017-05-15 | 2017-08-18 | 深圳市茁壮网络股份有限公司 | A kind of transcoding parameter method to set up and device |
| CN110430431B (en) | 2019-06-25 | 2021-10-22 | 浙江大华技术股份有限公司 | Video decoding method, chip, device, computer equipment and storage medium |
| CN112054818B (en) * | 2020-09-15 | 2022-02-25 | 北京锐马视讯科技有限公司 | SDI and ASI signal acquisition and transmission equipment |
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