CN102811382A - Method and device for collecting multimedia signals - Google Patents
Method and device for collecting multimedia signals Download PDFInfo
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- CN102811382A CN102811382A CN201210280052XA CN201210280052A CN102811382A CN 102811382 A CN102811382 A CN 102811382A CN 201210280052X A CN201210280052X A CN 201210280052XA CN 201210280052 A CN201210280052 A CN 201210280052A CN 102811382 A CN102811382 A CN 102811382A
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Abstract
The invention discloses a method and a device for collecting multimedia signals. The method comprises the following steps: obtaining the multimedia signal to be processed; decoding the multimedia signals according to the sort of the multimedia signals; and encoding the decoded multimedia signals according to a predetermined format. The invention further discloses a device for realizing the method.
Description
Technical field
The present invention relates to the video acquisition technical field, relate in particular to a kind of method and device of multimedia signal acquisition.
Background technology
Broadcast television industry generally uses serial digital interface SDI (Serial Digital Interface), Asynchronous Serial Interface ASI (Asynchronize Serial Interface) and transport stream TS (Transport Stream) as the video broadcasting signal.Hardware coder on the market basically also all is the input of supporting these several kinds of video source now; And through certain setting; The output of can encoding provides other application (for example: Internet video is play, and carries out net cast through the Internet or 3G net) through the video flowing after H.264 encoding.
Along with popularizing and telecommunications enterprise's improving constantly of bandwidth of registering one's residence of the Internet, the audio, video data that spreads through the internet becomes possibility.But because the code check of general sdi signal and TS and ASI message transmission is all very big; And be that radio, TV and film industries are customized at the beginning of these transmission signals designs, be not suitable for internet transmission, therefore existing multi-media signal directly transmits on the internet and also has some bottlenecks; Must carry out recompile to these signals; Under the situation that guarantees video quality, reduce the encoder bit rate of video as far as possible, adapt to internet transmission.Present various encoder is separate mutually different, so also makes video behind the coding can not intersect uses each other, uses and must unify transcoding ability reusable again to the video behind the coding if want to intersect.
Though these encoders are supported multiple input source; But can only select one the tunnel as input source simultaneously; That is to say if selected SDI just can not select the TS mode again; In follow-up coding, also just this road input source is encoded simultaneously, also can only export one tunnel way of output selected behind the coding.Receive different input sources if desired simultaneously, so just need purchase a few cover capturing and coding equipment according to several roads input source.In order to adapt to different input sources; The encoding device that needs the buying different manufacturers; The use that can not cross one another between the audio, video data after can occurring so again encoding because the coding implementation of each producer is different, has improved user's use cost so greatly; And because the coded format of each producer is different, the data after causing encoding also can't be intersected shared.
Summary of the invention
The embodiment of the invention provides a kind of acquisition method and device of multi-media signal, is used to realize the collection to the different-format signal source, is encoded into the audio, video data of same-code parameter then, makes the user practice thrift hardware cost, remarkable in economical benefits.
The embodiment of the invention has proposed the method that a kind of audio, video data is gathered, and may further comprise the steps: obtain pending multi-media signal; Kind according to said multi-media signal is decoded to said multi-media signal; Decoded multi-media signal is pressed the predetermined format coding.Adopt technique scheme; Can realize audio, video data collection through a cover collecting device to the different-format signal source; And the audio, video data after will gathering is decoded respectively according to the type difference, and the unified again coding that is packaged into same format is practiced thrift user cost.
In the technique scheme, preferred, said decoded multi-media signal is also comprised step after by the predetermined format coding step: the multi-media signal after will encoding encapsulates according to predetermined format, and the multi-media signal after the said encapsulation is exported.Adopt technique scheme, the multi-media signal after the encapsulation is exported with multiple form, can make things convenient for the user to select multi-media signal form and the use of oneself wanting.
In the technique scheme, preferred, the said step of obtaining pending multi-media signal further comprises: the kind of confirming pending multi-media signal; Select corresponding signal input interface according to the kind of said multi-media signal; Obtain pending multi-media signal.Select corresponding signal input interface through the judgement signal kinds, can receive the signal of number of different types simultaneously, increase the signal processing scope.
In the technique scheme, preferred, said kind according to said multi-media signal also comprises after to said multi-media signal decoding step, decoded audio/video frames is detected; The audio/video frames that damage is arranged is abandoned and/or mends frame.Through abandoning and/or mend the processing of frame, can guarantee that the audio/video frames that encoder receives all is effectively, improve the quality of multimedia signal encoding.
In the technique scheme, preferred, the kind of said input multi-media signal comprises serial digital interface signal, Asynchronous Serial Interface signal and/or transmission stream signal.
In the technique scheme; Preferably; The said step that decoded multi-media signal is encoded by predetermined format is specially; Decoded multi-media signal Unified coding is (joint video team (JVT, Joint Video Team) propose high compression digital video coding-coding device standard) format encoded or AAC form (Advanced Audio Coding, " Advanced Audio Coding ") coding H.264.Adopt technique scheme, the digital coding improve parameter unification behind the coding, convenient user later on uses the intersection of audio, video data, saves user cost, increases work efficiency.
In the technique scheme, preferred, the multi-media signal after said will the coding is specially according to the step of predetermined format encapsulation, and the multi-media signal behind the coding is encapsulated as TS form or FLV form.Be packaged into above-mentioned form, make things convenient for the user to select live or the file program request.
In the technique scheme; Preferably; Said step with the output of the multi-media signal after the said encapsulation is specially; With the form output of the multi-media signal after the encapsulation with HTTP (hypertext transport protocol, HTTP) or UDP stream (User Datagram Protocol, UDP).
The present invention also provides a kind of multimedia signal acquisition device that is used to realize said method, comprises acquisition module, decoder module and coding module, and is connected successively, and wherein said acquisition module is used to obtain pending multi-media signal; Said decoder module is used for according to the kind of said multi-media signal said multi-media signal being decoded; Said coding module is used for decoded multi-media signal is encoded by predetermined format.
In the technique scheme, preferred, also comprise output module, be connected with coding module, said output module is used for the multi-media signal behind the coding is encapsulated according to predetermined format, and the multi-media signal after the said encapsulation is exported.
In the technique scheme, preferred, said acquisition module further comprises judging unit, selected cell and acquiring unit, and connects successively, and wherein said judging unit is used for confirming the kind of pending multi-media signal; Said selected cell is used for selecting corresponding signal input interface according to the kind of said multi-media signal; Said acquiring unit is used to obtain pending multi-media signal.
In the technique scheme, preferred, said decoder module also is used for, and decoded audio/video frames is detected; The audio/video frames that damage is arranged is abandoned and/or mends frame.
Other features and advantages of the present invention will be set forth in specification subsequently, and, partly from specification, become obvious, perhaps understand through embodiment of the present invention.The object of the invention can be realized through the structure that in the specification of being write, claims and accompanying drawing, is particularly pointed out and obtained with other advantages.
Through accompanying drawing and embodiment, technical scheme of the present invention is done further detailed description below.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used to explain the present invention with embodiments of the invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the flow chart of multimedia signal acquisition method in the embodiment of the invention;
Fig. 2 is the flow chart of the another kind of execution mode of multimedia signal acquisition method in the embodiment of the invention;
Fig. 3 is the structural representation of multimedia signal acquisition device in the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for explanation and explains the present invention, and be not used in qualification the present invention.
Core concept of the present invention is, to the shortcoming that existing encoder exists, adopts the mode of soft capturing and coding; Can receive different input signals sources such as SDI, ASI and TS simultaneously,, receive different input sources owing to adopt software coding can launch the various signals acquisition module flexibly; Unification is decoded into original RAW form audio frequency and video then, gives the different threads of one and same coding module decoded RAW form audio frequency and video, encodes; Audio frequency and video behind the coding come from the realization of same coding module; So the uniform format of audio frequency and video is given and can be intersected use when other are used, and unmatched situation can not occur.
As shown in Figure 1, the embodiment of the invention has proposed the method that a kind of multi-medium data is gathered, and may further comprise the steps:
Step 101, obtain pending multi-media signal;
Step 102, said multi-media signal is decoded according to the kind of said multi-media signal;
Step 103, decoded multi-media signal is pressed predetermined format coding.
As shown in Figure 2, the embodiment of the invention has proposed the method that another kind of multi-medium data is more specifically gathered, and further specifies the present invention with this.
The multi-media signal source can be the video recording (DV) of video camera, also can be that the SDI of TV station broadcasts information, can also be cable TV signal and satellite-signal (TS), or analog signal etc.After confirming the kind of pending multi-media signal, select corresponding signal input interface and obtain pending multi-media signal according to the kind of multi-media signal.Generally speaking, the corresponding a kind of signal input interface of each multi-media signal is selected corresponding signal input interface through judging signal kinds, can receive the signal of number of different types simultaneously, increases the signal processing scope.
Be decoded into the audio, video data of original RAW form to dissimilar multi-media signals; In order to guarantee the quality of next stage coding work; Here can detect decoded audio, video data, abandon and/or mend frame for the audio/video frames that damages and handle.
According to the audio, video data after the processing that receives; Adopt a plurality of instances of same coding module to carry out correlative coding; Owing to be the same coding module of launching; So the digital coding improve parameter unification behind the coding is convenient to after the user these data cross used, data format comprises H.264 format encoded or AAC format encoded.
According to preestablishing of user, can the multi-media signal behind the coding be encapsulated as TS (Transport Stream) form or FLV (Flash Video) form, make things convenient for the user to select to use.
In the technique scheme, the audio, video data after the encapsulation can be selected the form output with HTTP (HTTP) or UDP (UDP) stream.
Adopt technical scheme of the present invention, used software coding to realize, can gather the signal source of multiple different pattern of the inputs simultaneously; Be encoded into the audio, video data of same-code parameter then, during the audio/video flow of the multiple pattern of the input of encoding at the same time, only need get final product with an equipment; If employing universaling coder; There is the input source of how many kinds of form just must purchase a few cover encoders so, makes the user practice thrift hardware cost greatly like this, particularly in the application of gathering a large amount of audio/video flows; Remarkable in economical benefits reduces the operation cost of whole company etc.
Because what gather is the software collection coded system; The actual hardware device that uses is the PC server, and low price is supported on the basis of audio frequency and video input source commonly used simultaneously; Also can support non-common input source; And need not purchase capturing and coding equipment more in addition, for the user practices thrift cost, can adjust flexibly according to user's actual conditions again simultaneously.
As shown in Figure 3, the embodiment of the invention also provides a kind of multimedia signal acquisition device that is used to realize said method, comprises acquisition module 301, decoder module 302, coding module 303, and said each module connects successively.
Said decoder module also is used for, and the audio/video frames after raising the price is detected, and the audio/video frames that damage is arranged is abandoned and/or mend frame.
Those skilled in the art should understand that embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of the embodiment of complete hardware embodiment, complete software implementation example or combination software and hardware aspect.And the present invention can be employed in the form that one or more computer-usable storage medium (including but not limited to magnetic disc store and optical memory etc.) that wherein include computer usable program code go up the computer program of implementing.
The present invention is that reference is described according to the flow chart and/or the block diagram of method, equipment (system) and the computer program of the embodiment of the invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or the block diagram and/or square frame and flow chart and/or the block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out through the processor of computer or other programmable data processing device produce to be used for the device of the function that is implemented in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in ability vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work; Make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is implemented in the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded on computer or other programmable data processing device; Make on computer or other programmable devices and to carry out the sequence of operations step producing computer implemented processing, thereby the instruction of on computer or other programmable devices, carrying out is provided for being implemented in the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (12)
1. the acquisition method of a multi-media signal is characterized in that, may further comprise the steps:
Obtain pending multi-media signal;
Kind according to said multi-media signal is decoded to said multi-media signal;
Decoded multi-media signal is pressed the predetermined format coding.
2. the method for claim 1 is characterized in that, said decoded multi-media signal is also comprised step after by the predetermined format coding step:
Multi-media signal behind the coding is encapsulated according to predetermined format, the multi-media signal after the said encapsulation is exported.
3. according to claim 1 or claim 2 method is characterized in that the said step of obtaining pending multi-media signal further comprises:
Confirm the kind of pending multi-media signal;
Select corresponding signal input interface according to the kind of said multi-media signal;
Obtain pending multi-media signal.
4. according to claim 1 or claim 2 method is characterized in that, said kind according to said multi-media signal also comprises after to said multi-media signal decoding step,
Decoded audio/video frames is detected;
The audio/video frames that damage is arranged is abandoned and/or mends frame.
5. according to claim 1 or claim 2 method is characterized in that the kind of said input multi-media signal comprises serial digital interface signal, Asynchronous Serial Interface signal or transmission stream signal.
6. according to claim 1 or claim 2 method; It is characterized in that; Said the step of decoded multi-media signal by predetermined format coding is specially, decoded multi-media signal Unified coding is encoded or AAC Advanced Audio Coding format encoded for high compression digital video coding-coding device reference format H.264.
7. method as claimed in claim 2 is characterized in that, the multi-media signal after said will the coding is specially according to the step of predetermined format encapsulation, and the multi-media signal behind the coding is encapsulated as TS transport stream format or FLV stream media format.
8. method as claimed in claim 2 is characterized in that, and is said, and the step that the multi-media signal after the said encapsulation is exported is specially, with the form output of the multi-media signal after the encapsulation with HTTP HTTP or udp user datagram protocol stream.
9. the harvester of a multi-media signal is characterized in that, comprises acquisition module, decoder module and coding module, and is connected successively, wherein
Said acquisition module is used to obtain pending multi-media signal;
Said decoder module is used for according to the kind of said multi-media signal said multi-media signal being decoded;
Said coding module is used for decoded multi-media signal is encoded by predetermined format.
10. device as claimed in claim 9 is characterized in that, also comprises output module, be connected with coding module,
Said output module is used for the multi-media signal behind the coding is encapsulated according to predetermined format, and the multi-media signal after the said encapsulation is exported.
11. like claim 9 or 10 described devices, it is characterized in that said acquisition module further comprises judging unit, selected cell and acquiring unit, and connect successively, wherein
Said judging unit is used for confirming the kind of pending multi-media signal;
Said selected cell is used for selecting corresponding signal input interface according to the kind of said multi-media signal;
Said acquiring unit is used to obtain pending multi-media signal.
12. like claim 9 or 10 described devices, it is characterized in that said decoder module also is used for,
Decoded audio/video frames is detected;
The audio/video frames that damage is arranged is abandoned and/or mends frame.
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| CN201210280052.XA CN102811382B (en) | 2012-08-08 | 2012-08-08 | A kind of method of multimedia signal acquisition and device |
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| CN201210280052.XA CN102811382B (en) | 2012-08-08 | 2012-08-08 | A kind of method of multimedia signal acquisition and device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104768025A (en) * | 2015-04-02 | 2015-07-08 | 无锡天脉聚源传媒科技有限公司 | Method and device for repairing bad frames in video |
| CN106331168A (en) * | 2016-10-14 | 2017-01-11 | 成都比斯特科技有限责任公司 | Grain condition remote monitoring and management platform |
| CN107155115A (en) * | 2017-06-09 | 2017-09-12 | 浙江广播电视集团 | Video/audio processing system and method |
| CN109769129A (en) * | 2018-12-27 | 2019-05-17 | 武汉科技大学 | A kind of coding/decoding method of anti-parsing failure in liquid crystal instrument for automobile |
| CN110708564A (en) * | 2019-10-21 | 2020-01-17 | 上海网达软件股份有限公司 | Live transcoding method and system for dynamically switching video streams |
| CN112054818A (en) * | 2020-09-15 | 2020-12-08 | 北京锐马视讯科技有限公司 | SDI and ASI signal acquisition and transmission equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007069851A1 (en) * | 2005-12-13 | 2007-06-21 | Lg Electronics Inc. | Broadcasting receiver and method for recording and reproducing video signal |
| US20100223647A1 (en) * | 2009-02-27 | 2010-09-02 | At&T Mobility Ii Llc | Method and apparatus for distributing media |
| CN101964905A (en) * | 2010-10-11 | 2011-02-02 | 北京中科大洋科技发展股份有限公司 | Terminal for realizing television news live broadcast through wireless communication network |
-
2012
- 2012-08-08 CN CN201210280052.XA patent/CN102811382B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007069851A1 (en) * | 2005-12-13 | 2007-06-21 | Lg Electronics Inc. | Broadcasting receiver and method for recording and reproducing video signal |
| US20100223647A1 (en) * | 2009-02-27 | 2010-09-02 | At&T Mobility Ii Llc | Method and apparatus for distributing media |
| CN101964905A (en) * | 2010-10-11 | 2011-02-02 | 北京中科大洋科技发展股份有限公司 | Terminal for realizing television news live broadcast through wireless communication network |
Non-Patent Citations (1)
| Title |
|---|
| 周圣鑫等: "基于FPGA的SDI/ASI传输系统设计实现", 《微计算机信息》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104768025A (en) * | 2015-04-02 | 2015-07-08 | 无锡天脉聚源传媒科技有限公司 | Method and device for repairing bad frames in video |
| CN106331168A (en) * | 2016-10-14 | 2017-01-11 | 成都比斯特科技有限责任公司 | Grain condition remote monitoring and management platform |
| CN107155115A (en) * | 2017-06-09 | 2017-09-12 | 浙江广播电视集团 | Video/audio processing system and method |
| CN109769129A (en) * | 2018-12-27 | 2019-05-17 | 武汉科技大学 | A kind of coding/decoding method of anti-parsing failure in liquid crystal instrument for automobile |
| CN109769129B (en) * | 2018-12-27 | 2021-03-26 | 武汉科技大学 | Decoding method for preventing analysis failure in automobile liquid crystal instrument |
| CN110708564A (en) * | 2019-10-21 | 2020-01-17 | 上海网达软件股份有限公司 | Live transcoding method and system for dynamically switching video streams |
| CN112054818A (en) * | 2020-09-15 | 2020-12-08 | 北京锐马视讯科技有限公司 | SDI and ASI signal acquisition and transmission equipment |
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