CN108322810A - Dynamic media coding/decoding method, apparatus and system based on TS stream encapsulation - Google Patents
Dynamic media coding/decoding method, apparatus and system based on TS stream encapsulation Download PDFInfo
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- CN108322810A CN108322810A CN201810104362.3A CN201810104362A CN108322810A CN 108322810 A CN108322810 A CN 108322810A CN 201810104362 A CN201810104362 A CN 201810104362A CN 108322810 A CN108322810 A CN 108322810A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
- H04N21/4341—Demultiplexing of audio and video streams
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
- H04N21/4343—Extraction or processing of packetized elementary streams [PES]
Abstract
The invention discloses a kind of dynamic media coding/decoding method, apparatus and systems based on TS stream encapsulation, should include based on the dynamic media coding/decoding method of TS stream encapsulation：Dynamic media TS code streams are received, DMT information is packaged in the TS code streams, the DMT information includes the message content for the data label, DMT of data type in characterizing the identification number containing DMT, being flowed for TS；The dynamic media TS code streams are decoded, obtain dynamic media auxiliary information table, and obtain dynamic media data information and dynamic media content from dynamic media auxiliary information table；According to the dynamic media data information, synchronize in TS code streams video data and audio data carry out system layer multiplexing decoding.Implement the present invention to solve the problems, such as to decode after programme information dynamic indicates, is conducive to the information exchange and Rapid Popularization of dynamic program.
Description
Technical field
The present invention relates to broadcasting and TV TV and communication field, more particularly to a kind of dynamic media decoding side based on TS stream encapsulation
Method, apparatus and system.
Background technology
The existing relevant information of IPTV play-on-demand programs content issues, need the content information for being attached to program with XML or
The form of JASON data is issued by IPTV C2 standard interface specifications, is solved based on web browser technology by terminal
Analysis displaying.This mode limitation is larger, and the load and presentation of information have the following problems：
(1) ununified content information specification, various regions standard differ, and the entrance of new program must be adapted to, outstanding
Program, which is difficult to, quickly and effectively promotes adaptation.
(2) program content information can only do single video and audio displaying, can not be according to the actual playing progress rate of program and use
The focus at family realizes that program is dynamically shown, can not the efficiently and effectively relevant advertisement of presentation content, electric business, interaction content.
After program is loaded into dynamic media interactive information, using existing TS flow standards decoding process, although can normally decode
Video-audio program content, but dynamic media interaction data can not be correctly parsed, above- mentioned information can not finally be presented to user.
Invention content
In view of this, the present invention is intended to provide it is a kind of based on TS stream encapsulation dynamic media coding/decoding method, apparatus and system,
To solve the decoding problem after programme information dynamic indicates, be conducive to the information exchange and Rapid Popularization of dynamic program.
Specifically, the dynamic media coding/decoding method based on TS stream encapsulation of the present invention, including：Receive dynamic media TS codes
It flows, DMT information is packaged in the TS code streams, the DMT information includes for characterizing the identification number containing DMT, being flowed for TS
The data label of middle data type, the message content of DMT；The dynamic media TS code streams are decoded, dynamic media auxiliary letter is obtained
Table is ceased, and obtains dynamic media data information and dynamic media content from dynamic media auxiliary information table；According to the dynamic
Media data information, synchronize in TS code streams video data and audio data carry out system layer multiplexing decoding.
Further, the decoding dynamic media TS code streams, obtain dynamic media auxiliary information table, and from dynamic matchmaker
Dynamic media data information is obtained in body auxiliary information table and the step of dynamic media content includes：Task manager is called first
It registers DMT and decodes all kinds of events；Then it calls the first preset function to read the TS code streams formulated in file to be analyzed；According to
The identification number of DMT, identifies DMT data packets, and according to the packet ID of the data label and TS code streams to DMT data at
Reason obtains dynamic media auxiliary information table, and obtains dynamic media data information and dynamic from dynamic media auxiliary information table
Media content.
Further, after the packet ID according to the data label and TS code streams handles DMT data packets also
Including：Call the second preset function will be in the specified catalogue of dynamic media data information deposit；Third preset function passes through
The identification number of the DMT provided in the catalogue handles the dynamic media data information in TS code streams.
Further, this method further includes playing the video data, audio data and dynamic media content.
Specifically, the dynamic media decoding apparatus based on TS stream encapsulation of the present invention includes：.
Further, receiving unit receives dynamic media TS code streams, is packaged with DMT information in the TS code streams, described
DMT information includes for the data label of data type in characterizing the identification number containing DMT, being flowed for TS, in the message of DMT
Hold；
First decoding unit, decodes the dynamic media TS code streams, obtains dynamic media auxiliary information table, and from dynamic matchmaker
Dynamic media data information and dynamic media content are obtained in body auxiliary information table；
Second decoding unit is synchronized according to the dynamic media data information to the video data and audio in TS code streams
Data carry out system layer multiplexing decoding.
Specifically, the dynamic media decoding system based on TS stream encapsulation of the present invention includes：Processor；Memory is deposited
Computer program is contained, when the computer program is executed by processor, realizes the above-mentioned dynamic media based on TS stream encapsulation
Coding/decoding method.
Further, first decoding unit is used for：Task manager registration DMT is called to decode all kinds of events first；
Then it calls the first preset function to read the TS code streams formulated in file to be analyzed；According to the identification number of DMT, DMT is identified
Data packet, and DMT data are handled according to the packet ID of the data label and TS code streams, obtain dynamic media auxiliary information
Table, and dynamic media data information and dynamic media content are obtained from dynamic media auxiliary information table.
Further, flowing the dynamic media decoding apparatus encapsulated based on TS further includes：
Processing unit, for calling the second preset function will be in the specified catalogue of dynamic media data information deposit；
Call third preset function by the identification number of the DMT provided in the catalogue, to the dynamic media data information in TS code streams
It is handled.
Further, flowing the dynamic media decoding apparatus encapsulated based on TS further includes：
Broadcast unit plays the video data, audio data and dynamic media content.
Specifically, a kind of dynamic media based on TS stream encapsulation decodes system, which is characterized in that the system comprises：
Processor；Memory is stored with computer program, when the computer program is executed by processor, realizes above-mentioned based on TS
Flow the dynamic media coding/decoding method of encapsulation.
Specifically, the computer readable storage medium of the present invention, is stored with computer program, realize above-mentioned based on TS streams
The dynamic media coding/decoding method of encapsulation.
Dynamic media coding/decoding method, the apparatus and system based on TS stream encapsulation of the present invention, by video interactive dynamic
The decoding of media shows the media play relevant information of program current point in time to terminal user, such as advertisement, electric business product, sea
Report etc., can be obviously improved user experience, formulate output and the decoding standard of dynamic program information, and it is dynamic in viewing to be conducive to user
It is synchronous to receive dynamic media program content information when state media program content, solve the TS code streams of carrying dynamic program information
The problem of can not decoding and dynamic medium information is presented.
Description of the drawings
It is incorporated into specification and the attached drawing of a part for constitution instruction shows the embodiment of the present invention, and with
Principle for explaining the present invention together is described.In the drawings, similar reference numeral is for indicating similar element.Under
Attached drawing in the description of face is some embodiments of the present invention, rather than whole embodiments.Those of ordinary skill in the art are come
It says, it without creative efforts, can be obtain other attached drawings according to these attached drawings.
Fig. 1 is a kind of flow chart flowing dynamic media TS codings in the dynamic media marker method encapsulated based on TS；
Fig. 2 is that the video interactive dynamic media based on TS stream encapsulation indicates TS stream composition figures；
Fig. 3 is to encapsulate dynamic media interaction mark coding pack arrangement based on TS；
Fig. 4 is DMT information table segment structure sample figures；
Fig. 5 is DMT information table informations definition figure；
Fig. 6 is a kind of flow chart of dynamic media coding/decoding method based on TS stream encapsulation provided in an embodiment of the present invention；
Fig. 7 is decoding main classes master drawing；
Fig. 8 is the master drawing for parsing DMT private datas；
Fig. 9 is the master drawing for parsing dynamic media TS packets；
Figure 10 is dynamic media TS Packet analyzing flow charts provided in an embodiment of the present invention；
Figure 11 is the master drawing for parsing dynamic media PES packets；
Figure 12 is dynamic media PES Packet analyzing flow charts；
Figure 13 dynamic media Section decoding process figures；
Figure 14 is a kind of structure diagram of dynamic media decoding apparatus based on TS stream encapsulation provided in an embodiment of the present invention.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
The every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.It needs
Illustrate, in the absence of conflict, the features in the embodiments and the embodiments of the present application mutually can be combined arbitrarily.
The invention will now be described in detail with reference to the accompanying drawings implements the dynamic media coding/decoding method based on TS stream encapsulation, the dress that are related to
It sets, coding structure and system.
The thought of this programme：The number of transmission program and flexible structure are changeable in TS streams, must include therefore, in TS streams row
Table describes the temporal structure of TS streams, these lists are known as PSI (program specific information), between being or
The table transmitted in payload.Include PAT (program association table), PMT (program in PSI table lattice
Map table) etc. tables, carry TS stream characterising parameter information.Technical scheme of the present invention carries on the basis of original PSI table
Going out private information table --- dynamic media is realized in the definition of dynamic media auxiliary information table DMT (Dynamic media table)
Video interactive.The increase of private information table DMT does not influence the parsing that TS flows original standard packaging format, and dynamic media content still may be used
To be broadcasted in conventional decoder.TS is the protocol stack of a transport layer, it can carry the transmission of various contents, such as MPEG,
WMV, H264.The dynamic media code stream of encapsulation requires in the encapsulation format of standard, increases dynamic media auxiliary information table
DMT.DMT form datas are used for describing the composed structure of transmitting stream.Wherein, the dynamic media based on TS stream encapsulation indicates (coding)
Method and coding structure etc. are specifically shown in Fig. 1-Fig. 5, have been associated in patent application and have been described in detail at one, the parameter in Fig. 1 is detailed
The explanation being shown in Table in 1- tables 6.
Embodiment one
As shown in fig. 6, the dynamic media coding/decoding method based on TS stream encapsulation of embodiment one includes：
Step 1 receives dynamic media TS code streams, and DMT information is packaged in the TS code streams, and the DMT information includes using
The message content of the data label, DMT of data type in identification number of the characterization containing DMT, for TS streams；DMT information tables are taken
The main information of band is as shown in table 1：
Table 1
Step 2 decodes the dynamic media TS code streams, obtains dynamic media auxiliary information table, and assist from dynamic media
Dynamic media data information and dynamic media content are obtained in information table；
Specifically, this step may include：
Task manager registration DMT is called to decode all kinds of events first；
Then it calls the first preset function to read the TS code streams formulated in file to be analyzed；
According to the identification number of DMT, DMT data packets are identified, and according to the packet ID of the data label and TS code streams to DMT
Data are handled, and obtain dynamic media auxiliary information table, and obtain dynamic media data from dynamic media auxiliary information table
Information and dynamic media content；
It is explained in detail below：DMT Decoder (decoder) call task manager registration DMT to decode all kinds of things first
Then part calls the first preset function read_packet functions to read the TS packets formulated in file and is analyzed.In the solution of standard
Outside code process, according to Dynamic_media_table_ID, DMT data packets are identified, according to specific data label and DMT
PID carries out DMT data packets different processing.The associated dynamic that second preset function Parse_DMT_packet carries DMT
Media information is stored in Directory, and third preset function Parse_ts_packet is by providing in Directory later
Dynamic_media_table_ID signals, the dynamic medium information in being flowed to TS are handled.
Wherein, main classes master drawing is decoded as shown in fig. 7, primary function is as shown in table 2,
Table 2
All kinds of Packet analyzing relational graphs are as shown in table 3：
Table 3
DMT private datas are decrypted as shown in figure 8, being specially：The dynamic media content information carried in parsing DMT arrives
Program, then Program is inserted into DMT_directory.The primary function of Directory is shown in Table 4：
Table 4
| Function name | Meaning |
| add_program、remove_program | It indicates addition and deletes program |
| get_program | It indicates to obtain program |
| get_num_programs | It indicates to obtain number of programs |
The primary function of Program is shown in Table 5：
Table 5
| Function name | Meaning |
| active、deactive | It indicates addition activation and stops program |
| add_estream、remove_estream | It is represented to program addition and deletes ES streams |
| set_pcr_estream | Indicate that the stream, which is arranged, PCR |
| get_estream | It indicates to obtain ES streams |
| get_num_streams | It indicates to obtain the number containing stream in program |
Fig. 9 is the master drawing for parsing dynamic media TS packets, wherein the function of dynamic media TS pack arrangements is as shown in table 6,
Table 6
It is further preferred that described carry out DMT data packets according to the packet ID of the data label and TS code streams to handle it
After further include：
Call the second preset function will be in the specified catalogue of dynamic media data information deposit；
Third preset function is by the identification number of the DMT provided in the catalogue, to the dynamic media data in TS code streams
Information is handled.
Step 3, according to the dynamic media data information, synchronize in TS code streams video data and audio data into
Row system layer multiplexing decodes.
It is understood that after by above three step, you can to play the video data, audio data and move
State media content.
Specific dynamic media TS Packet analyzings flow chart can also be as shown in Figure 10.Parse the sample of dynamic media PES packets such as
Shown in Figure 11, Figure 12 is dynamic media PES Packet analyzing flow charts；Figure 13 is dynamic media Section decoding process figures, Tu12Ji
Parameter in Figure 13 refers to the explanation in table 1- tables 6.
The present embodiment shows the matchmaker of program current point in time to terminal user by the decoding to video interactive dynamic media
Body plays relevant information, such as advertisement, electric business product, poster, can be obviously improved user experience, formulate dynamic program information
Output and decoding standard, are conducive to user when watching dynamic media programme content, synchronous to receive dynamic media programme content letter
Breath solves the problems, such as that the TS code streams of carrying dynamic program information can not decode and present dynamic medium information.
Embodiment two
As shown in figure 14, the control device of the dynamic media coding/decoding method based on TS stream encapsulation of embodiment two includes：
Receiving unit receives dynamic media TS code streams, is packaged with DMT information in the TS code streams, the DMT information includes
Message content for the data label, DMT of data type in characterizing the identification number containing DMT, being flowed for TS；
First decoding unit, decodes the dynamic media TS code streams, obtains dynamic media auxiliary information table, and from dynamic matchmaker
Dynamic media data information and dynamic media content are obtained in body auxiliary information table；
Second decoding unit is synchronized according to the dynamic media data information to the video data and audio in TS code streams
Data carry out system layer multiplexing decoding.
Preferably, first decoding unit is used for：Task manager registration DMT is called to decode all kinds of events first；So
It calls the first preset function to read the TS code streams formulated in file afterwards to be analyzed；According to the identification number of DMT, DMT numbers are identified
DMT data are handled according to packet, and according to the packet ID of the data label and TS code streams, obtain dynamic media auxiliary information
Table, and dynamic media data information and dynamic media content are obtained from dynamic media auxiliary information table.
Preferably, dynamic media decoding apparatus further includes：Processing unit, for calling the second preset function by the dynamic
In the specified catalogue of media data information deposit；Call third preset function by the identification number of the DMT provided in the catalogue,
Dynamic media data information in TS code streams is handled.
Preferably, dynamic media decoding apparatus further includes broadcast unit, plays the video data, audio data and dynamic
Media content.
The present embodiment shows the matchmaker of program current point in time to terminal user by the decoding to video interactive dynamic media
Body plays relevant information, such as advertisement, electric business product, poster, can be obviously improved user experience, formulate dynamic program information
Output and decoding standard, are conducive to user when watching dynamic media programme content, synchronous to receive dynamic media programme content letter
Breath solves the problems, such as that the TS code streams of carrying dynamic program information can not decode and present dynamic medium information.
In addition, the present invention also provides a kind of dynamic medias based on TS stream encapsulation to decode system, the system comprises：Processing
Device；Memory is stored with computer program, when the computer program is executed by processor, realizes above-mentioned based on TS streams
The dynamic media coding/decoding method of encapsulation.
In addition, the present invention also provides a kind of computer readable storage medium, it is stored with computer program, when the computer
When program is executed by processor, the above-mentioned dynamic media coding/decoding method based on TS stream encapsulation is realized.
The dynamic media decoding system and computer readable storage medium based on TS stream encapsulation have based on TS stream encapsulation
The corresponding technique effect of dynamic media coding/decoding method, details are not described herein.
It will appreciated by the skilled person that realizing all or part of step/units/modules of above-described embodiment
It can be completed by the relevant hardware of program instruction, foregoing routine can be stored in computer read/write memory medium, should
When being executed, it includes the step corresponded in above-described embodiment each unit to execute to program；And storage medium above-mentioned includes：ROM、
The various media that can store program code such as RAM, magnetic disc or optical disc.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical solution and advantageous effect
It describes in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in the guarantor of the present invention
Within the scope of shield.
Claims (10)
1. a kind of dynamic media coding/decoding method based on TS stream encapsulation, which is characterized in that the method includes：
Dynamic media TS code streams are received, DMT information is packaged in the TS code streams, the DMT information includes containing for characterizing
The identification number of DMT, flowed for TS in the data label of data type, DMT message content；
The dynamic media TS code streams are decoded, obtain dynamic media auxiliary information table, and obtained from dynamic media auxiliary information table
Take dynamic media data information and dynamic media content；
According to the dynamic media data information, synchronize to the video data and audio data progress system layer multiplexing in TS code streams
Decoding.
2. the dynamic media coding/decoding method as described in claim 1 based on TS stream encapsulation, which is characterized in that described in the decoding
Dynamic media TS code streams obtain dynamic media auxiliary information table, and obtain dynamic media number from dynamic media auxiliary information table
It is believed that the step of breath and dynamic media content, includes：
Task manager registration DMT is called to decode all kinds of events first；
Then it calls the first preset function to read the TS code streams formulated in file to be analyzed；
According to the identification number of DMT, DMT data packets are identified, and according to the packet ID of the data label and TS code streams to DMT data
It is handled, obtains dynamic media auxiliary information table, and obtain dynamic media data information from dynamic media auxiliary information table
And dynamic media content.
3. the dynamic media coding/decoding method as claimed in claim 2 based on TS stream encapsulation, which is characterized in that described in the basis
The packet ID of data label and TS code streams further includes after being handled DMT data packets：
Call the second preset function will be in the specified catalogue of dynamic media data information deposit；
Third preset function is by the identification number of the DMT provided in the catalogue, to the dynamic media data information in TS code streams
It is handled.
4. the dynamic media coding/decoding method as claimed in any one of claims 1-3 based on TS stream encapsulation, which is characterized in that
Play the video data, audio data and dynamic media content.
5. a kind of dynamic media decoding apparatus based on TS stream encapsulation, which is characterized in that described device includes：
Receiving unit receives dynamic media TS code streams, and DMT information is packaged in the TS code streams, and the DMT information includes being used for
Characterize the identification number containing DMT, for the message content of the data label, DMT of data type in TS streams；
First decoding unit decodes the dynamic media TS code streams, obtains dynamic media auxiliary information table, and auxiliary from dynamic media
Dynamic media data information and dynamic media content are obtained in supplementary information table；
Second decoding unit is synchronized according to the dynamic media data information to the video data and audio data in TS code streams
Carry out system layer multiplexing decoding.
6. the dynamic media decoding apparatus as claimed in claim 5 based on TS stream encapsulation, which is characterized in that first decoding
Unit is used for：Task manager registration DMT is called to decode all kinds of events first；Then it calls the first preset function to read and formulates text
TS code streams in part are analyzed；According to the identification number of DMT, DMT data packets are identified, and according to the data label and TS codes
The packet ID of stream handles DMT data, obtains dynamic media auxiliary information table, and obtained from dynamic media auxiliary information table
Dynamic media data information and dynamic media content.
7. the dynamic media decoding apparatus as claimed in claim 6 based on TS stream encapsulation, which is characterized in that further include：
Processing unit, for calling the second preset function will be in the specified catalogue of dynamic media data information deposit；It calls
Third preset function carries out the dynamic media data information in TS code streams by the identification number of the DMT provided in the catalogue
Processing.
8. the dynamic media decoding apparatus based on TS stream encapsulation as described in any one of claim 5-7, which is characterized in that also
Including：
Broadcast unit plays the video data, audio data and dynamic media content.
9. a kind of dynamic media based on TS stream encapsulation decodes system, which is characterized in that the system comprises：
Processor；
Memory is stored with computer program, when the computer program is executed by processor, realizes in claim 1-4
Method described in any one.
10. a kind of computer readable storage medium, is stored with computer program, which is characterized in that when the computer program quilt
When processor executes, the method described in any one of claim 1-4 is realized.
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