CN102790906A - Encoding and decoding system and method - Google Patents
Encoding and decoding system and method Download PDFInfo
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Abstract
The invention provides an encoding and decoding method which comprises the following steps that: a user interface module receives original data from the outside and defines a data packaging format required by a user according to the input of the user; a separation module separates the original data into original audio data and original video data; a plurality of conversion modules convert the original video data into video data required by the user; a processing module adds synchronization parameters of the original audio data corresponding to the video data required by the user to a head part of the video data required by the user; and a packaging module packages the video data processed by the processing module and the original audio data into data required by the user according to the data packaging format required by the user. By parallel transcoding, the data conversion rate is greatly improved and time required for transcoding is shortened so as to meet the real-time requirement of the user; and moreover, the synchronous processing carried out before the audio and video data is packaged implements the effect that in the playing process of the transcoded data, the audio and video synchronization is kept.
Description
Technical field
Relate generally to field of computer technology of the present invention more specifically, relates to data coding/decoding system and method.
Background technology
Along with the radio and television digitlization constantly develops, the Video Transcoding Technology demand constantly increases, and the main application fields of transcoding technology is digital television broadcasting and Digital Media front-end processing.
Current a large amount of digital video programs is MPEG-2 (Moving Pictures Experts Group-2; Dynamic image expert group) form; And many new playback equipments adopt such as advanced digital code/decode formats such as MPEG-4/H.264/Real/VC-1/AVS for improving transmission and storage efficiency; Therefore the transcoding technology that comes from MPEG-2 adopts in a large number, and also increasingly high to the requirement of relevant therewith high definition transcoding, the particularly raising of the real-time transcoding technology and the means of realization thereof.
In the prior art, a kind of multi-media transcoding server is provided, wherein, has comprised: interface module, be used to receive the transcoding task, said transcoding task is for being the task of stream media format with transcoding multimedia data; Transcoded processing module is used for carrying out to said transcoding task the transcoding processing of object flow media formats; The data block package module is used at transcoding process the part of accomplishing transcoding being encapsulated as corresponding data block according to timestamp; Transcoding progress monitoring module, this transcoding is connected with display terminal, is used for beginning from the first data block of accomplishing transcoding, on display terminal, plays corresponding data block successively according to timestamp.This technical scheme can realize the transcoding task to a certain extent.
But the transcoded data task is heavy, can take too many server resource and time, so when server carried out the transcoding operation, the speed of transcoding operation was slow.In addition, also there is the nonsynchronous problem of audio frequency and video in this technical scheme.
Summary of the invention
Can take the too many time to multi-media transcoding in the prior art, and the different step defective of audio frequency and video, the present invention proposes the decoding method and the system that can address the aforementioned drawbacks.
The invention provides a kind of decoding method, comprising: Subscriber Interface Module SIM receives initial data from the outside, and according to user's input, the required data encapsulation form of definition user; Separation module separates into original voice data and original video data with initial data; A plurality of modular converters convert original video data into user required video data; Processing module will be added into the head of the required video data of user with the synchronization parameter of the required corresponding original audio data of video data of user; And package module will be packaged into the required data of user through video data and the original audio data that processing module is handled according to the required data encapsulation form of user.
Preferably, synchronization parameter comprises data sequence number and time tag.
Preferably, time tag is the pairing zero-time of start frame and the pairing concluding time of end frame of original audio data.
Preferably, Subscriber Interface Module SIM also according to user's input, defines the required data encoding format of user.
Preferably, a plurality of modular converters convert original video data into user required video data and further comprise: a plurality of decoder modules in a plurality of modular converters carry out parallel decoding to original video data; And a plurality of coding modules in a plurality of modular converters carry out parallel encoding according to the required data encoding format of user, to obtain the required video data of user.
Preferably, after package module was accomplished encapsulation step, package module notice Subscriber Interface Module SIM was accomplished encoding and decoding; And, the required data of user after the encapsulation are stored according to the destination address that the user in the Subscriber Interface Module SIM is provided with in advance.
The present invention also provides a kind of coding/decoding system, comprising: Subscriber Interface Module SIM, be used for receiving initial data from the outside, and according to user's input, the required data encapsulation form of definition user; Separation module is used for initial data is separated into original voice data and original video data; A plurality of modular converters are used for converting original video data into user required video data; Processing module is used for the synchronization parameter with the required corresponding original audio data of video data of user is added into the head of the required video data of user; And package module, be used for will being packaged into the required data of user through video data and the original audio data that processing module is handled according to the required data encapsulation form of user.
Preferably, synchronization parameter comprises data sequence number and time tag, and wherein, time tag comprises pairing zero-time of the start frame of original audio data and pairing concluding time of end frame.
Preferably, Subscriber Interface Module SIM also is used for the input according to the user, the required data encoding format of definition user.
Preferably, a plurality of modular converters further comprise: a plurality of decoder modules are used for original video data is carried out parallel decoding; And a plurality of coding modules, be used for carrying out parallel encoding, to obtain the required video data of user according to the required data encoding format of user.
Preferably, package module also is used for, and after package module was accomplished encapsulation, the notice Subscriber Interface Module SIM was accomplished encoding and decoding; And, the required data of user after the encapsulation are stored according to the destination address that the user in the Subscriber Interface Module SIM is provided with in advance.
Utilize coding/decoding system of the present invention and method, not only can utilize a plurality of modular converters transcoding that walks abreast, significantly improved data transaction speed; Can satisfy user's real-time requirement; Thereby significantly reduced the needed time of transcoding, before this external audio, video data encapsulation, carried out Synchronous Processing; Thereby can guarantee that the later data of transcoding in playing process, can keep audio-visual synchronization.
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.
Description of drawings
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.In the accompanying drawings:
Fig. 1 is the flow chart of decoding method according to an embodiment of the invention;
Fig. 2 is the structure chart of coding/decoding system according to an embodiment of the invention; And
Fig. 3 is the concrete structure figure of coding/decoding system according to an 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.
Fig. 1 is the flow chart of decoding method according to an embodiment of the invention.This decoding method comprises: in step S100, Subscriber Interface Module SIM receives initial data from the outside, and according to user's input, the required data encapsulation form of definition user; In step S102, separation module separates into original voice data and original video data with initial data; In step S104, a plurality of modular converters convert original video data into user required video data; In step S106, processing module will be added into the head of the required video data of user with the synchronization parameter of the required corresponding original audio data of video data of user; And in step S108, package module will be packaged into the required data of user through video data and the original audio data that processing module is handled according to the required data encapsulation form of user.
Utilize this decoding method video data to be carried out transcoding, improved transcoding speed, reduced the needed time of transcoding, thereby can satisfy user's real-time requirement through a plurality of modular converters.In addition, synchronization parameter is added into the head of video data, thereby has realized audio-visual synchronization through processing module.
According to another embodiment of the present invention, code-transferring method comprises: at first, Subscriber Interface Module SIM receives initial data from the outside, and according to user's input, the required data encapsulation form of definition user is sent to separation module with initial data then.Separation module separates into original voice data and original video data with the initial data that receives.Then, original audio data directly is sent to package module, and original video data is sent to a plurality of modular converters.
A plurality of modular converters convert original video data into user required video data and further comprise: a plurality of decoder modules in a plurality of modular converters carry out parallel decoding to original video data; And a plurality of coding modules in a plurality of modular converters carry out parallel encoding according to the required data encoding format of user, to obtain the required video data of user.Particularly, Subscriber Interface Module SIM also according to user's input, defines the required data encoding format of user.A plurality of decoder modules are decoded video data simultaneously, thereby obtain yuv data and a plurality of coding module data encoding format required according to the user, yuv data is carried out parallel encoding, thereby can obtain the required video data of user apace.Then that the user is required video data sends processing module to.
Processing module will be added into the head of the required video data of user with the synchronization parameter of the required corresponding original audio data of video data of user.Synchronization parameter comprises data sequence number and time tag.Wherein, time tag is the pairing zero-time of start frame and the pairing concluding time of end frame of original audio data.Particularly, voice data can be the form of one or more packets of audio data or the form of one or more audio data region, and each packets of audio data or audio data region comprise a plurality of frames again.Each packets of audio data or audio data region all have sign, and this sign is defined as data sequence number (asking the inventor to confirm whether the description of " sequence number " is accurate, whether also need replenish).And time tag is defined as the pairing time of start frame and the pairing time of end frame of packets of audio data or audio data region.In the head zone that processing module is added into video data with the data sequence number and the time tag of voice data; Thereby can guarantee before playing video data; Can accurately find the voice data that is complementary with this video data through the data sequence number that is stored in the head zone; And can be according to pairing zero-time of the start frame of voice data and pairing concluding time of end frame; Guarantee that voice data and video data play simultaneously, and in playing process, keep the synchronous of voice data and video data.
At last, package module will be packaged into the required data of user through video data and the original audio data that processing module is handled according to the required data encapsulation form of user.After package module was accomplished encapsulation step, package module notice Subscriber Interface Module SIM was accomplished the encoding and decoding step; And, the required data of user after the encapsulation are stored according to the destination address that the user in the Subscriber Interface Module SIM is provided with in advance.Destination address can be the disk of this server, also can be the address of the other-end of Internet connection.Correspondingly, package module is according to destination address, and the storage that encapsulation back user is required perhaps stores on the other-end through the Internet on the disk of this server.Therefore, the user only need import the partial parameters and the destination address of encoding and decoding, just can obtain the data of the required encapsulation format of user.
In one embodiment, convert TS into step that the AVI data have been described decoding method as an example.
At first, Subscriber Interface Module SIM receives initial data from the outside, and according to user's input, the required data encapsulation form of definition user is the AVI data format, then initial data is sent to the separation module of TS data.
Next, the separation module of TS data separates into original voice data and original video data with the initial data that receives.Then, original audio data directly is sent to package module, and original video data is sent to a plurality of modular converters.A plurality of modular converters convert original video data into user required video data and further comprise: a plurality of decoder modules in a plurality of modular converters carry out parallel decoding and obtain yuv data original video data; And a plurality of coding modules in a plurality of modular converters carry out parallel encoding according to the data encoding format of the required H264 data of user with yuv data, to obtain the required H264 video data of user.Wherein, also according to user's input, the required data encoding format of definition user is the H264 data format to Subscriber Interface Module SIM.Then, a plurality of modular converters H264 video data that the user is required sends processing module to.
Processing module will be added into the head of the required H264 video data of user with the synchronization parameter of the required corresponding original audio data of video data of user.Synchronization parameter comprises data sequence number and time tag.Wherein, time tag is the pairing zero-time of start frame and the pairing concluding time of end frame of original audio data.
At last, package module will be packaged into the required AVI data of user through H264 video data and the original audio data that processing module is handled according to the data encapsulation form of the required AVI data of user.Thereby accomplish the data that the H264 data encapsulation become audio frequency and video stagger scheme AVI.After package module was accomplished encapsulation step, package module notice Subscriber Interface Module SIM was accomplished the encoding and decoding step; And, the required data of user after the encapsulation are stored according to the destination address that the user in the Subscriber Interface Module SIM is provided with in advance.
Fig. 2 is the structure chart of coding/decoding system according to an embodiment of the invention.Coding/decoding system 200 comprises: Subscriber Interface Module SIM 202, be used for receiving initial data from the outside, and according to user's input, the required data encapsulation form of definition user; Separation module 204 is used for initial data is separated into original voice data and original video data; A plurality of modular converters 206 are used for converting original video data into user required video data; Processing module 208 is used for the synchronization parameter with the required corresponding original audio data of video data of user is added into the head of the required video data of user; And package module 210, be used for will being packaged into the required data of user through video data and the original audio data that processing module 208 is handled according to the required data encapsulation form of user.
This coding/decoding system not only can carry out fast transcoding, satisfies user's real-time requirement, and can realize behind the transcoding audio, video data synchronously.
Fig. 3 is the concrete structure figure of coding/decoding system according to an embodiment of the invention.Coding/decoding system 300 comprises: Subscriber Interface Module SIM 302, be used for receiving initial data from the outside, and according to user's input, the required data encapsulation form of definition user; Separation module 304 is used for initial data is separated into original voice data and original video data; A plurality of modular converters 306 are used for converting original video data into user required video data.
Particularly, Subscriber Interface Module SIM 302 also is used for the input according to the user, the required data encoding format of definition user.Each modular converter in a plurality of modular converters 306 all comprises: decoder module 308 is used for original video data is carried out parallel decoding; And coding module 310, be used for carrying out parallel encoding, to obtain the required video data of user according to the required data encoding format of user.
Coding/decoding system 300 also comprises: processing module 312 is used for the synchronization parameter with the required corresponding original audio data of video data of user is added into the head of the required video data of user.Synchronization parameter comprises data sequence number and time tag, and wherein, time tag comprises pairing zero-time of the start frame of original audio data and pairing concluding time of end frame.
Coding/decoding system 300 also comprises: package module 314 will be packaged into the required data of user through video data and the original audio data that processing module 312 is handled according to the required data encapsulation form of user.In addition, package module 314 also is used for after accomplishing encapsulation, and notice Subscriber Interface Module SIM 302 is accomplished encoding and decoding; And, the required data of user after the encapsulation are stored according to the destination address that the user in the Subscriber Interface Module SIM 302 is provided with in advance.
Through utilizing coding/decoding system of the present invention and method, can realize the fast transcoding of initial data, improved transcoding speed, reduce the required time of transcoding, thereby satisfy user's real-time requirement.In addition; The head that this trans-coding system is added into video data through processing module with the data sequence number and the time tag of voice data; Thereby not only can find the voice data that is complementary with video data exactly, and can realize that voice data and video data are synchronous.In addition, this coding/decoding system is simple to operate, only needs user input part transcoding parameter and destination address, just can accomplish transcoding automatically, and with the storage behind the transcoding in location, user designated destination.
More than be merely the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. decoding method comprises:
Subscriber Interface Module SIM receives initial data from the outside, and according to user's input, the required data encapsulation form of definition user;
Separation module separates into original voice data and original video data with said initial data;
A plurality of modular converters convert said original video data into user required video data;
Processing module will be added into the head of the required video data of said user with the synchronization parameter of the required corresponding said original audio data of video data of said user; And
Package module will be packaged into the required data of user through video data and the said original audio data that said processing module is handled according to the required data encapsulation form of said user.
2. decoding method according to claim 1 is characterized in that said synchronization parameter comprises data sequence number and time tag.
3. decoding method according to claim 1 is characterized in that, said time tag is pairing zero-time of the start frame of said original audio data and pairing concluding time of end frame.
4. decoding method according to claim 1 is characterized in that, said Subscriber Interface Module SIM also according to user's input, defines the required data encoding format of user.
5. decoding method according to claim 4 is characterized in that, a plurality of modular converters convert said original video data into user required video data and further comprise:
A plurality of decoder modules in said a plurality of modular converter carry out parallel decoding to said original video data; And
A plurality of coding modules in said a plurality of modular converter carry out parallel encoding according to the required data encoding format of said user, to obtain the required video data of user.
6. decoding method according to claim 1 is characterized in that, after said package module is accomplished encapsulation step,
Said package module notifies said Subscriber Interface Module SIM to accomplish encoding and decoding; And
According to the destination address that the user in the said Subscriber Interface Module SIM is provided with in advance, the data that the user after the said encapsulation is required are stored.
7. coding/decoding system comprises:
Subscriber Interface Module SIM is used for receiving from the outside initial data, and according to user's input, the required data encapsulation form of definition user;
Separation module is used for said initial data is separated into original voice data and original video data;
A plurality of modular converters are used for converting said original video data into user required video data;
Processing module is used for the synchronization parameter with the required corresponding said original audio data of video data of said user is added into the head of the required video data of said user; And
Package module is used for will being packaged into the required data of user through video data and the said original audio data that said processing module is handled according to the required data encapsulation form of said user.
8. coding/decoding system according to claim 7; It is characterized in that; Said synchronization parameter comprises data sequence number and time tag, and wherein, said time tag comprises pairing zero-time of the start frame of said original audio data and pairing concluding time of end frame.
9. coding/decoding system according to claim 7 is characterized in that said Subscriber Interface Module SIM also is used for the input according to the user, the required data encoding format of definition user.
10. coding/decoding system according to claim 9 is characterized in that, a plurality of modular converters further comprise:
A plurality of decoder modules are used for said original video data is carried out parallel decoding; And
A plurality of coding modules are used for carrying out parallel encoding according to the required data encoding format of said user, to obtain the required video data of user.
11. coding/decoding system according to claim 7 is characterized in that, said package module also is used for, after said package module is accomplished encapsulation,
Notify said Subscriber Interface Module SIM to accomplish encoding and decoding; And
According to the destination address that the user in the said Subscriber Interface Module SIM is provided with in advance, the required data of said user after the encapsulation are stored.
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| CN103647970A (en) * | 2013-12-02 | 2014-03-19 | 天脉聚源(北京)传媒科技有限公司 | Audio and video synchronization method and system for distributed transcoding |
| CN103888815A (en) * | 2014-03-13 | 2014-06-25 | 广州市花都区中山大学国光电子与通信研究院 | Method and system for real-time separation treatment and synchronization of audio and video streams |
| CN103916678A (en) * | 2012-12-31 | 2014-07-09 | 中国移动通信集团广东有限公司 | Multimedia data transcoding method, transcoding device and multimedia data play system |
| CN105163169A (en) * | 2015-09-16 | 2015-12-16 | 北京暴风科技股份有限公司 | Data package format method and system suitable for transmission |
| CN106657090A (en) * | 2016-12-28 | 2017-05-10 | 深圳市共进电子股份有限公司 | Multimedia stream processing method and device as well as embedded device |
| CN108174283A (en) * | 2017-12-27 | 2018-06-15 | 威创集团股份有限公司 | A kind of vision signal source generating method and device |
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Application publication date: 20121121 |