WO2014010955A1 - Procédé et système de traitement de données mpeg - Google Patents
Procédé et système de traitement de données mpeg Download PDFInfo
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- WO2014010955A1 WO2014010955A1 PCT/KR2013/006174 KR2013006174W WO2014010955A1 WO 2014010955 A1 WO2014010955 A1 WO 2014010955A1 KR 2013006174 W KR2013006174 W KR 2013006174W WO 2014010955 A1 WO2014010955 A1 WO 2014010955A1
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- mfu
- flag
- duration
- mpu
- mpeg data
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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]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
- H04N21/23614—Multiplexing of additional data and video streams
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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]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2381—Adapting the multiplex stream to a specific network, e.g. an Internet Protocol [IP] network
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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]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2389—Multiplex stream processing, e.g. multiplex stream encrypting
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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]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/633—Control signals issued by server directed to the network components or client
- H04N21/6332—Control signals issued by server directed to the network components or client directed to client
Definitions
- the present invention relates to a system and method for processing MPEG data, and more particularly, to an improved media processing unit (MPU) from an access unit including media data coded through encapsulation processing. And a technology for processing MPEG data by setting a media fragment unit (MFU).
- MPU media processing unit
- MFU media fragment unit
- the technique of processing MPEG data is a technique of processing MPEG data using an MPEG Media Transport (MMT) system that provides a general conversion format, and the MMT system may process MPEG data using a format of MMT ASSET.
- MMT MPEG Media Transport
- Embodiments of the present invention provide a method, apparatus and system for processing MPEG data by setting an improved MPU and MFU from an access unit containing coded media data through encapsulation.
- embodiments of the present invention provide a method, apparatus, and system for transmitting MPEG data by inserting a specific flag in the header of MPU and MFU in processing MPEG data.
- embodiments of the present invention provide a method, apparatus, and system for receiving MPEG data by extracting a specific flag included in a header of an MPU and an MFU in processing MPEG data.
- a method of processing MPEG data includes obtaining at least one access unit including coded media data through a process including encapsulation and packetization; Grouping the at least one access unit to generate at least one MPU; Determining a duration flag indicating whether duration information of the at least one access unit is valid in the at least one media processing unit (MPU); And inserting the duration flag into a header of the at least one MPU.
- the determining of the duration flag may include setting the duration flag to 1 when the duration information of the at least one access unit is valid.
- the method of processing MPEG data includes determining a default duration flag indicating whether a default duration of the at least one access unit is valid in the at least one MPU; And inserting the default duration flag into a header of the at least one MPU.
- the determining of the default duration flag may include setting the default duration flag to 1 when the default duration of the at least one access unit is valid.
- the method of processing MPEG data includes determining a default duration indicative of a default presentation duration of the at least one access unit in the at least one MPU; And inserting the default duration into a header of the at least one MPU.
- the method of processing MPEG data may include determining a duration representing a presentation duration of the at least one access unit in the at least one MPU; And inserting the duration into a header of the at least one MPU.
- Method for processing MPEG data comprises the steps of receiving at least one MPU; Extracting a duration flag included in a header of the at least one MPU; Determining whether duration information of at least one access unit included in the at least one MPU is valid based on the duration flag; And processing the at least one MPU based on the determination result.
- a method of processing MPEG data includes obtaining at least one access unit including coded media data through a process including encapsulation and packetization; Fragmenting the at least one access unit to generate at least one Media Fragment Unit (MFU); Determining a priority present flag indicating whether priority information of the at least one MFU is valid in the at least one MFU; And inserting the priority present flag into a header of the at least one MFU.
- MFU Media Fragment Unit
- the determining of the priority present flag may include setting the priority present flag to 1 when priority information of the at least one MFU is valid.
- the method of processing MPEG data may include determining a start flag indicating a start MFU of the at least one access unit in the at least one MFU; And inserting the start flag into a header of the at least one MFU.
- the determining of the start flag may include setting the start flag to 1 when the at least one MFU is a start MFU of the at least one access unit.
- the method of processing MPEG data may include determining a transmission order present flag indicating whether a transmission order of the at least one MFU is valid in the at least one MFU; And inserting the transmission order present flag into a header of the at least one MFU.
- the determining of the transmission order present flag may include setting the transmission order present flag to 1 when the transmission order of the at least one MFU is valid.
- the method of processing MPEG data may include: determining, in the at least one MFU, a priority specifying a relative priority of the at least one MFU from remaining MFUs except the at least one MFU; And inserting the priority in the header of the at least one MFU.
- the method of processing MPEG data may include: determining, in the at least one MFU, a transmission order specifying a relative transmission order of the at least one MFU from remaining MFUs except the at least one MFU; And inserting the transmission order into the header of the at least one MFU.
- Method for processing MPEG data comprises the steps of receiving at least one MFU; Extracting a priority present flag included in a header of the at least one MFU; Determining whether priority information of the at least one MFU included in the at least one MFU is valid based on the priority present flag; And processing the at least one MFU based on the determination result.
- Embodiments of the present invention may provide a method, apparatus, and system for processing MPEG data by setting an improved MPU and MFU from an access unit including coded media data through encapsulation.
- embodiments of the present invention can provide a method, apparatus, and system for transmitting MPEG data by inserting a specific flag in the header of the MPU and MFU in the process of processing MPEG data.
- embodiments of the present invention can provide a method, apparatus and system for receiving MPEG data by extracting a specific flag included in the header of the MPU and MFU in the process of processing MPEG data.
- FIGS. 1A and 1B are diagrams illustrating a Media Processing Unit (MPU) and a Media Fragment Unit (MFU).
- MPU Media Processing Unit
- MFU Media Fragment Unit
- FIG. 2 is a diagram illustrating an MFU obtained by fragmenting an access unit.
- FIG. 3 is a diagram illustrating an MPU packet according to an embodiment of the present invention.
- FIG. 4 is a diagram illustrating syntax of an MPU according to an embodiment of the present invention.
- FIG. 5 is a diagram illustrating an MFU packet according to an embodiment of the present invention.
- FIG. 6 is a diagram illustrating syntax of MFU according to an embodiment of the present invention.
- FIG. 7 is a flowchart illustrating a method of processing MPEG data by setting an MPU in a transmission apparatus according to an embodiment of the present invention.
- FIG. 8 is a flowchart illustrating a method of processing MPEG data set as an MPU in a receiving apparatus according to an embodiment of the present invention.
- FIG. 9 is a flowchart illustrating a method of processing MPEG data by setting an MFU in a transmission apparatus according to an embodiment of the present invention.
- FIG. 10 is a flowchart illustrating a method of processing MPEG data set to MFU in a receiving apparatus according to an embodiment of the present invention.
- FIGS. 1A and 1B are diagrams illustrating a Media Processing Unit (MPU) and a Media Fragment Unit (MFU).
- MPU Media Processing Unit
- MFU Media Fragment Unit
- timed media data 111 and non-timed media data 121 may be set and processed in MPU and MFU, which are formats of MPEG Media Transport (MMT) ASSET (110, 120).
- MMT MPEG Media Transport
- the MPUs 118 and 123 may be configured from at least one access unit, at least one MFU 119 or non-timed media data 121, and may be an encapsulated and packetized data format. Can be.
- the MFU 119 may be generated by fragmenting an access unit, or may be generated from a single access unit, and may be an encapsulated and packetized data format.
- the timed media data 111 may be converted into a plurality of coded access units 113, 114, and 115 through an encapsulation process (112).
- the plurality of access units 113, 114, and 115 may be converted into the MPU 118 and the MFU 119 which are formats of the MMT ASSET (116, 117).
- the MPU 118 may be generated by grouping a plurality of access units 113 and 114 (116)
- the MFU 119 may be generated from a single access unit 115 (117).
- the MFU 119 may be generated by fragmenting the single access unit 115. Detailed description thereof will be described below.
- non-timed media data 121 may be converted to MPU 123 (122).
- FIG. 2 is a diagram illustrating an MFU obtained by fragmenting an access unit.
- a plurality of MFUs 230, 240, and 250 may be obtained by fragmenting a single access unit 210 (220).
- each of the plurality of MFUs 230, 240, 250 may be used independently, each may include an identifier that distinguishes each other, and between the plurality of MFUs 230, 240, 250 in a single access unit. It may include an identifier that generalizes the relationship information.
- the MPUs and MFUs mentioned above are defined by reference to "Working Draft of MPEG Media Transport” as specified in ISO / IEC JTC1 / SC29 / WG11 n12690 and "High efficiency coding and media delivery in heterogeneous environments" as specified in ISO / IEC 23008. Can be.
- FIG. 3 is a diagram illustrating an MPU packet according to an embodiment of the present invention.
- the MPU packet includes an MPU header 310 and an MPU payload 320.
- the MPU payload 320 may include MPEG data
- the MPU header 310 may include a length of an MPU, a length of an MPU header, an MPU sequence number, an access unit number, a duration flag, a default duration flag, a default duration, The duration, private header flag, private header length, and private header may be included. Detailed description thereof will be described below.
- FIG. 4 is a diagram illustrating syntax of an MPU according to an embodiment of the present invention.
- the header of the MPU includes the length of the MPU, the length of the MPU header, the MPU sequence number, the number of the access unit, the private header flag, the private header length, the private header, the duration flag 410, and the default duration flag 420. ), A default duration 430 and a duration 440 may be included.
- the duration flag 410 may indicate whether the duration information of the access unit is valid in the MPU.
- the duration flag 410 may be set to a bit value of 1 when the duration information of the access unit is valid.
- the default duration flag 420 may indicate whether the default duration of the access unit in the MPU is valid. In this case, the default duration flag 420 may be set to a bit value of 1 when the default duration of the access unit is valid.
- the default duration 430 may indicate a default presentation duration of an access unit in the MPU.
- the default duration 430 may be set when the duration flag 410 is valid and the default duration flag 420 is valid.
- the duration 440 may indicate the presentation duration of an access unit in the MPU.
- the duration 440 may be set when the duration flag 410 is valid and the default duration flag 420 is not valid.
- FIG. 5 is a diagram illustrating an MFU packet according to an embodiment of the present invention.
- an MFU packet includes an MFU header 510 and an MFU payload 520.
- the MFU payload 520 may include MPEG data
- the MFU header 510 may include a length of the MFU, a length of the MFU header, a start flag, a priority present flag, a transmission order present flag, priority, and transmission. Order may be included. Detailed description thereof will be described below.
- FIG. 6 is a diagram illustrating syntax of MFU according to an embodiment of the present invention.
- the header of the MFU includes a length of the MFU, a length of the MFU header, a start flag 610, a priority present flag 620, a transmission order present flag 630, a priority 640, and a transmission. Sequence 660 may be included.
- the priority present flag 620 may indicate whether priority information of the MFU is valid in the MFU.
- the priority present flag 620 may be set to a bit value of 1 when the priority information of the MFU is valid, and may be considered for MFUs of each of the plurality of access units as well as a single access unit. have.
- the start flag 610 may indicate the start MFU of the access unit in the MFU. At this time, the start flag 610 may be set to a bit value of 1 when the corresponding MFU is the start MFU of the access unit, and not only indicates the start MFU of the access unit, but also indicates the end of the last MFU of the previous access unit. Can be represented.
- the transmission order present flag 630 may indicate whether the transmission order of the MFU in the MFU is valid. At this time, if the transmission order of the MFU is valid, it may be set to a bit value of 1.
- the header of the existing MFU may include a dependency counter 650.
- the dependency counter 650 may specify the numbers of the remaining MFUs that depend on the corresponding MFU in a single access unit.
- the use of the dependency counter 650 may cause inconsistencies between the signal value and the remaining MFUs, resulting in an uncertainty of priority between the remaining MFUs and that MFU.
- the method according to an embodiment of the present invention suggests priority 640 instead of dependency counter 650.
- Priority 640 may specify the relative priority of the MFU from the remaining MFUs other than the MFU in the MFU. In this case, the priority 640 may be set when the priority present flag 620 is valid.
- the transmission order 660 may specify a relative transmission order of the MFU from the remaining MFUs other than the MFU in the MFU. In this case, the transmission order 660 may be set when the transmission order present flag 630 is valid. In addition, the transmission order 660 may mean a decoding order of each of the plurality of MFUs in a single access unit.
- FIG. 7 is a flowchart illustrating a method of processing MPEG data by setting an MPU in a transmission apparatus according to an embodiment of the present invention.
- a method according to an embodiment of the present invention obtains at least one access unit including coded media data through a process including encapsulation and packetization (710). .
- the method according to an embodiment of the present invention groups 720 at least one access unit to generate at least one MPU (720).
- the method according to the embodiment of the present invention determines a duration flag indicating whether duration information of at least one access unit is valid in at least one media processing unit (MPU) (730).
- the determining of the duration flag may include setting the duration flag to 1 when the duration information of at least one access unit is valid.
- the method according to an embodiment of the present invention inserts a duration flag into the header of at least one MPU (740).
- the method according to an embodiment of the present invention determines a default duration flag indicating whether a default duration of at least one access unit is valid in at least one MPU, and inserts a default duration flag in a header of at least one MPU. Can be.
- the determining of the default duration flag may include setting the default duration flag to 1 when the default duration of at least one access unit is valid.
- the method according to an embodiment of the present invention may determine a default duration indicating a default presentation duration of at least one access unit in at least one MPU, and insert the default duration into a header of the at least one MPU.
- the method according to an embodiment of the present invention may determine the duration indicating the presentation duration of the at least one access unit in the at least one MPU, and insert the duration into the header of the at least one MPU.
- FIG. 8 is a flowchart illustrating a method of processing MPEG data set as an MPU in a receiving apparatus according to an embodiment of the present invention.
- the method according to an embodiment of the present invention receives at least one MPU (810).
- the method extracts a duration flag included in a header of at least one MPU.
- the method according to the embodiment of the present invention determines whether duration information of at least one access unit included in the at least one MPU is valid based on the duration flag.
- the method according to an embodiment of the present invention processes at least one MPU based on the determination result (840).
- FIG. 9 is a flowchart illustrating a method of processing MPEG data by setting an MFU in a transmission apparatus according to an embodiment of the present invention.
- a method according to an embodiment of the present invention obtains at least one access unit including coded media data through a process including encapsulation and packetization (910). .
- the method according to the embodiment of the present invention fragments the at least one access unit to generate at least one media fragment unit (MFU).
- MFU media fragment unit
- the method according to an embodiment of the present invention determines a priority present flag indicating whether priority information of at least one MFU is valid in at least one MFU (930).
- the determining of the priority present flag may include setting the priority present flag to 1 when priority information of at least one MFU is valid.
- the method according to an embodiment of the present invention inserts a priority present flag into a header of at least one MFU (940).
- the method according to an embodiment of the present invention may determine the start flag indicating the start MFU of the at least one access unit in the at least one MFU, and insert the start flag into the header of the at least one MFU.
- the determining of the start flag may include setting the start flag to 1 when at least one MFU is a start MFU of at least one access unit.
- the method according to an embodiment of the present invention determines a transmission order present flag indicating whether the transmission order of at least one MFU in the at least one MFU is valid, and sets the transmission order present flag to a header of the at least one MFU. Can be inserted into
- the determining of the transmission order present flag may include setting the transmission order present flag to 1 when the transmission order of at least one MFU is valid.
- the method according to an embodiment of the present invention determines the priority specifying the relative priority of the at least one MFU from the remaining MFUs except at least one MFU, and the priority is at least one Can be inserted into the header of the MFU.
- the method according to an embodiment of the present invention determines the transmission order specifying the relative transmission order of the at least one MFU from the remaining MFUs except at least one MFU in at least one MFU, and the transmission order Can be inserted into the header of the MFU.
- FIG. 10 is a flowchart illustrating a method of processing MPEG data set to MFU in a receiving apparatus according to an embodiment of the present invention.
- a method according to an embodiment of the present invention receives 1010 at least one MFU.
- the method according to an embodiment of the present invention extracts the priority present flag included in the header of at least one MFU (1020).
- the method according to an embodiment of the present invention determines whether the priority information of at least one MFU included in the at least one MFU is valid based on the priority present flag (1030).
- the method according to an embodiment of the present invention (1040) processes at least one MFU based on the determination result.
- the apparatus described above may be implemented as a hardware component, a software component, and / or a combination of hardware components and software components.
- the devices and components described in the embodiments may be, for example, processors, controllers, arithmetic logic units (ALUs), digital signal processors, microcomputers, field programmable arrays (FPAs), It may be implemented using one or more general purpose or special purpose computers, such as a programmable logic unit (PLU), microprocessor, or any other device capable of executing and responding to instructions.
- the processing device may execute an operating system (OS) and one or more software applications running on the operating system.
- the processing device may also access, store, manipulate, process, and generate data in response to the execution of the software.
- OS operating system
- the processing device may also access, store, manipulate, process, and generate data in response to the execution of the software.
- processing device includes a plurality of processing elements and / or a plurality of types of processing elements. It can be seen that it may include.
- the processing device may include a plurality of processors or one processor and one controller.
- other processing configurations are possible, such as parallel processors.
- the software may include a computer program, code, instructions, or a combination of one or more of the above, and configure the processing device to operate as desired, or process it independently or collectively. You can command the device.
- Software and / or data may be any type of machine, component, physical device, virtual equipment, computer storage medium or device in order to be interpreted by or to provide instructions or data to the processing device. Or may be permanently or temporarily embodied in a signal wave to be transmitted.
- the software may be distributed over networked computer systems so that they may be stored or executed in a distributed manner.
- Software and data may be stored on one or more computer readable recording media.
- the method according to the embodiment may be embodied in the form of program instructions that can be executed by various computer means and recorded in a computer readable medium.
- the computer readable medium may include program instructions, data files, data structures, etc. alone or in combination.
- the program instructions recorded on the media may be those specially designed and constructed for the purposes of the embodiments, or they may be of the kind well-known and available to those having skill in the computer software arts.
- Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical media such as CD-ROMs, DVDs, and magnetic disks, such as floppy disks.
- Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like.
- the hardware device described above may be configured to operate as one or more software modules to perform the operations of the embodiments, and vice versa.
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Abstract
L'invention porte sur un procédé de traitement de données MPEG qui comprend les étapes consistant à : obtenir au moins une unité d'accès, qui comprend des données multimédias qui sont codées par un processus comprenant une encapsulation et une mise en paquets ; déterminer un drapeau de durée pour une unité de traitement multimédia (MPU) pertinente qui indique si des informations de durée de l'au moins une unité d'accès sont valides ; et insérer le drapeau de durée dans un en-tête de la MPU pertinente.
Priority Applications (3)
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US14/414,351 US9936232B2 (en) | 2012-07-11 | 2013-07-11 | Method and system for processing MPEG data |
US15/859,006 US10178418B2 (en) | 2012-07-11 | 2017-12-29 | Method and system for processing MPEG data |
US16/240,248 US11218744B2 (en) | 2012-07-11 | 2019-01-04 | Method and system for processing MPEG data |
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US201261670354P | 2012-07-11 | 2012-07-11 | |
US61/670,354 | 2012-07-11 | ||
US201261711453P | 2012-10-09 | 2012-10-09 | |
US61/711,453 | 2012-10-09 | ||
KR10-2013-0080839 | 2013-07-10 | ||
KR1020130080839A KR102147475B1 (ko) | 2012-07-11 | 2013-07-10 | Mpeg 데이터를 처리하는 방법 및 시스템 |
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US14/414,351 A-371-Of-International US9936232B2 (en) | 2012-07-11 | 2013-07-11 | Method and system for processing MPEG data |
US15/859,006 Continuation US10178418B2 (en) | 2012-07-11 | 2017-12-29 | Method and system for processing MPEG data |
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US20120147141A1 (en) * | 2009-07-10 | 2012-06-14 | Taiji Sasaki | Recording medium, playback device, and integrated circuit |
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