WO2013040996A1 - Extrémité d'envoi, terminal, système et procédé pour multiplexage en codage hiérarchique - Google Patents

Extrémité d'envoi, terminal, système et procédé pour multiplexage en codage hiérarchique Download PDF

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Publication number
WO2013040996A1
WO2013040996A1 PCT/CN2012/081196 CN2012081196W WO2013040996A1 WO 2013040996 A1 WO2013040996 A1 WO 2013040996A1 CN 2012081196 W CN2012081196 W CN 2012081196W WO 2013040996 A1 WO2013040996 A1 WO 2013040996A1
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WIPO (PCT)
Prior art keywords
audio
hierarchical coding
data
subframe
multiplex
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PCT/CN2012/081196
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English (en)
Chinese (zh)
Inventor
沈灿
童登金
王标
张建强
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中兴通讯股份有限公司
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Publication of WO2013040996A1 publication Critical patent/WO2013040996A1/fr

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Classifications

    • 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
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
    • H04N21/234327—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements by decomposing into layers, e.g. base layer and one or more enhancement layers
    • 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
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
    • H04N21/4622—Retrieving content or additional data from different sources, e.g. from a broadcast channel and the Internet
    • 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
    • H04N21/631—Multimode Transmission, e.g. transmitting basic layers and enhancement layers of the content over different transmission paths or transmitting with different error corrections, different keys or with different transmission protocols

Definitions

  • the invention belongs to the field of multimedia broadcasting or mobile phone television technology, and particularly relates to a transmitting end, a terminal, a system and a method for transmitting audio and video hierarchical coding multiplexing in a multimedia broadcasting network.
  • Mobile multimedia broadcasting is a multimedia playback technology that has emerged in recent years. With a handheld terminal, you can listen to audio broadcasts or watch TV at high speeds.
  • the terminal receives the program list through the wireless protocol, selects the channel that the user has the right to watch, and can accept the multimedia data of the different programs to listen to the broadcast or watch the TV on the mobile terminal.
  • the different service data transmitted by the system may be encapsulated in different physical channels, and the data of each program includes: one or more of three types: video, audio and data, and the terminal receives relevant data through the terminal. On the player, the normal playback of audio or video.
  • the wireless channel can be composed of channels of different reliability. According to the importance of the data, the allocation is transmitted in different reliability channels, and the highly reliable channel transmits the most important data, thereby protecting important data.
  • the terminal receives data, if the wireless signal is good, the data of different reliability channels can be received smoothly, and the program quality is high.
  • the wireless signal is poor, only the data transmitted by the highly reliable channel can be received, and the program quality is poor.
  • Audio or video data can be hierarchically coded and divided into a basic layer and multiple extension layers.
  • the reliability requirements for physical channels are the most basic layer requirements, and the reliability requirements of multiple extension layers are sequentially reduced.
  • the system can be in different reliability channels.
  • the hierarchically encoded data is transmitted separately. Under the worst signal condition, the terminal can only receive the basic layer data, can hear the basic audio broadcast or see the basic video broadcast, and if the signal condition is good, it can receive High-quality audio and video broadcasts can be achieved with one or all of the extended layer data.
  • the associated method of transmitting hierarchically encoded audio and video data is:
  • each RTP stream is transmitted independently, and the hierarchical code is transmitted by out-of-band protocol.
  • the description parameters of the code, and the terminal receives the corresponding data according to the parameters.
  • the bearer overhead includes RTP header, UDP (User Data Packet Protocol) header, IP header, which is more than 40 bytes, and each RTP is an average of several hundred. Bytes, overhead is usually between 40% and 80%. Summary of the invention
  • the embodiments of the present invention provide a transmitting end, a terminal, a system, and a method for hierarchical coding and multiplexing in a multimedia broadcasting system, and implement different levels of protection on hierarchically encoded data of different importance to protect important data, so as to improve reliable reception of the terminal. Sex.
  • An embodiment of the present invention provides a method for hierarchical coding multiplexing, including:
  • the transmitting end divides the traffic channel into L channels with different reliability, and encodes the service data into M levels, where the M levels of data are encapsulated in N different multiplexing subframes, and the N complexes
  • the sub-frames are respectively encapsulated and transmitted on L channels with different reliability;
  • the M, N and L are all natural numbers greater than one.
  • the above method further includes:
  • the multiplexed frame header or the multiplexed sub-frame header or the control information channel carries the grading coding parameter, where the hierarchical coding parameter includes the hierarchical coding-dependent subframe number, when the multiplexed subframe service
  • the hierarchical coding dependent subframe number is set to the dependent multiplex subframe number; when the multiplex subframe transmits the base layer service data, the hierarchical coding depends on the subframe. The number is set to its own multiplex subframe number.
  • the hierarchical coding parameter further includes an audio hierarchical coding parameter indication, configured to indicate whether there is an audio hierarchical coding parameter in the multiplexing subframe.
  • the hierarchical coding parameter when the audio hierarchical coding parameter indication indicates that there is an audio hierarchical coding parameter in the multiplex subframe, the hierarchical coding parameter further includes an audio grading coding start layer number and an audio grading coding end layer number;
  • the audio hierarchical coding start layer number is used to indicate a start layer of audio hierarchical coding in the multiplex subframe
  • the number of the audio hierarchical coding end layer is used to indicate the number of end layers of the audio hierarchical coding in the multiplex subframe.
  • the service data includes both audio data and video data
  • the audio data is encoded into an M1 layer
  • the video data is encoded into an M2 layer
  • M is a maximum value in M1 and M2
  • M1 and M2 are A positive integer and not 1.
  • the embodiment of the invention further provides a method for hierarchical coding multiplexing, including:
  • the terminal After receiving the multiplexed frame, the terminal takes out the multiplexed subframe, and then extracts the multiplexed subframe header and the service data, and obtains the dependency relationship of the service data in one or more multiplexed subframes according to the encapsulated hierarchical coding parameter. After combining the service data of multiple multiplex subframes, decoding and playing.
  • the terminal synchronizes the data with the same time stamp in the different levels of service data into the decoder for decoding according to the timestamp in the service data.
  • the service data includes audio data and/or video data.
  • the embodiment of the present invention further provides a transmitting end of hierarchical coding multiplexing, where the transmitting end includes an encoder, a multiplexer and a modulator;
  • the encoder is configured to: encode service data into M levels;
  • the multiplexer is configured to: encapsulate the M levels of service data into N different multiplex subframes;
  • the modulator is configured to: encapsulate N multiplex subframes on L channels with different reliability;
  • the M, N and L are all natural numbers greater than one.
  • the multiplexer is further configured to: encapsulate a hierarchical coding parameter in a multiplexing frame header or a multiplexing subframe header or a control information channel, where the hierarchical coding parameter includes a hierarchical coding dependent subframe number,
  • the hierarchical coding dependent subframe number is set to the dependent multiplex subframe number; when the multiplex subframe transmits the base layer service data, The hierarchical coding depends on the subframe number set as its own multiplex subframe number.
  • the encapsulated hierarchical coding parameter further includes an audio hierarchical coding parameter indication, configured to indicate whether there is an audio hierarchical coding parameter in the multiplex subframe.
  • the hierarchical coding parameter when the audio hierarchical coding parameter indication indicates that there is an audio hierarchical coding parameter in the multiplex subframe, the hierarchical coding parameter further includes an audio grading coding start layer number and an audio grading coding end layer number;
  • the audio hierarchical coding start layer number is used to indicate a start layer number of audio hierarchical coding in the multiplex subframe
  • the audio hierarchical coding end layer number is used to indicate an end layer of audio hierarchical coding in the multiplex subframe.
  • the service data includes both audio data and video data
  • the audio data is encoded into an M1 layer
  • the video data is encoded into an M2 layer
  • M is a maximum value in M1 and M2
  • M1 and M2 are A positive integer and not 1.
  • the embodiment of the present invention further provides a terminal for hierarchical coding multiplexing, where the terminal includes a demodulation module, a demultiplexing module, and a decoding and playing module;
  • the demodulation module is configured to receive a multiplexing frame
  • the demultiplexing module is configured to: take out a multiplex subframe, and then extract a multiplex subframe header and service data; and obtain a service data dependency in one or more multiplex subframes according to the encapsulated hierarchical coding parameter. Relationship
  • the decoding and playing module is configured to: combine the service data of the multiple multiplex sub-frames, decode, and play.
  • the decoding and playing module is further configured to: synchronize data with the same time stamp in different levels of data into the decoder for decoding according to the timestamp in the service data.
  • the service data includes audio data and/or video data.
  • the embodiment of the present invention further provides a system for hierarchical coding multiplexing, the system comprising the transmitting end as described above, and the terminal as described above. .
  • the embodiment of the present invention carries hierarchically encoded audio and video data by multiplexing frames, and transmits hierarchically encoded data of different importance in different reliability physical channels, thereby improving reliability of terminal reception, and realizing reception when the signal is poor.
  • the most basic business Moreover, the overhead of the frame header is reduced, the data is encapsulated according to the importance of the information, and the important data is protected, so that the most basic program content can be provided in the case of poor signal conditions.
  • Figure 1 is a schematic diagram of a multiplexing frame.
  • FIG. 2 is a schematic structural diagram of an embodiment of a transmitting end of the present invention.
  • FIG. 3 is a schematic structural diagram of an embodiment of a receiving end of the present invention.
  • FIG. 5 is a schematic diagram of a method for transmitting a multiplex subframe in different reliability channels according to an embodiment of the present invention
  • Fig. 6 is a diagram showing the setting of hierarchical coding parameters in the embodiment of the present invention.
  • the embodiment of the present invention provides a hierarchical coding multiplexing system and method, including: dividing a traffic channel into L channels with different reliability, encoding data of one service into M levels, and data of the M levels is Encapsulated in N different multiplexed subframes, the N multiplexed subframes are respectively encapsulated and transmitted on L channels with different reliability; wherein, M, N, and L are all natural numbers greater than 1.
  • a multiplex frame is composed of a multiplexed frame header, a multiplexed frame payload, and a padding
  • the multiplexed frame payload is composed of one or more multiplexed subframes, and the multiplexed subframes are in order.
  • the multiplex subframe consists of a sub-frame header, a video segment, an audio segment, a data segment, and a padding.
  • the physical channel is composed of a control information channel and a traffic channel, and the multiplexed frame is carried in the traffic channel, and the control information channel transmits control information, including a network configuration table, a service configuration table, and a conditional reception configuration table.
  • the multiplexed frame header is optional, and the multiplexed frame may also be composed of the multiplexed frame payload and padding, and the parameters of the multiplexed frame header may be transmitted in the control channel.
  • padding is optional. If the length of the subframe header, video segment, audio segment, and data segment just matches the length of the physical channel, no padding is required.
  • this embodiment provides a transmitting end of hierarchical coding multiplexing, including an encoder, a multiplexer, and a modulator.
  • the encoder is configured to divide the traffic channel into L channels with different reliability, and encode data of one service into M levels;
  • the multiplexer is configured to encapsulate the M levels of data in N different multiplex subframes;
  • the modulator is configured to encapsulate the N multiplex subframes on L different reliability channels for transmission;
  • M, N and L are all natural numbers greater than one.
  • M is greater than or equal to N.
  • the audio data is encoded into an M1 layer
  • the video data is encoded into an M2 layer, where the M is a maximum value in M1 and M2; and when M1 and M2 are different 1.
  • the multiplexer is further configured to encapsulate hierarchical coding parameters in the multiplexing frame header or the multiplexing subframe header or the control information channel, where the hierarchical coding parameter includes a hierarchical coding dependent subframe number, when the audio and video data of the subframe is multiplexed
  • the hierarchical coding depends on the subframe number to be the dependent multiplex subframe number; when the multiplex subframe transmits the base layer audio and video data, the hierarchical coding Dependent
  • the frame number is set to its own multiplex subframe number.
  • the encapsulated hierarchical coding parameter further includes an audio hierarchical coding parameter indication for indicating whether there is an audio hierarchical coding parameter in the multiplex subframe.
  • the hierarchical coding parameter When the audio hierarchical coding parameter indication indicates that there is an audio data layer in the multiplex subframe, the hierarchical coding parameter further includes an audio grading coding start layer number and an audio grading coding end layer number;
  • the audio hierarchical coding start layer number is used to indicate the start layer number of the audio hierarchical coding in the multiplex subframe
  • the audio hierarchical coding end layer number is used to indicate the end layer of the audio hierarchical coding in the multiplex subframe.
  • the embodiment provides a hierarchical coding and multiplexing terminal, including a demodulation module, a demultiplexing module, and a decoding and playing module.
  • the demodulation module is configured to receive the multiplexing frame
  • the demultiplexing module is configured to take out the multiplex subframe, and then extract the multiplex subframe header and service data; Set to obtain a dependency relationship of audio and video data in one or more multiplexed subframes according to the hierarchical coding parameters of the package;
  • the decoding and playing module is configured to combine audio and video data of a plurality of multiplexed sub-frames, perform audio and video decoding, and play.
  • the decoding and playing module is further configured to synchronize the data with the same time stamp in the different levels of data into the decoder for decoding according to the time stamp in the service data.
  • the service data may include audio and/or video data.
  • a system for hierarchical coding multiplexing includes the above-mentioned transmitting end and terminal.
  • the embodiment provides a method for hierarchical coding multiplexing. As shown in FIG. 4, the method includes the following steps: Step 401: Divide a traffic channel into L channels with different reliability;
  • Step 402 Encoding the audio and video data of the same service (or called a program) into M levels, which can be divided into a basic layer, an extended layer 1, an extended layer 2, an extended layer M-1;
  • Step 403 Arranging the base layer and the multiple extension layers according to the importance of the information, and sequentially encapsulating them in the N multiplex subframes;
  • Step 404 Arrange N multiplex subframes in L channels for transmission.
  • M, N and L are both natural numbers greater than 1; the highly reliable channel corresponds to transmitting data of high importance.
  • the order of the above steps 401 and 402 may not be limited.
  • M is greater than or equal to N, N may be equal to L, or may not be equal to L.
  • the arrangement of the multiplexed sub-frames is divided and arranged according to the reliability of the physical channel, and the basic layer data is encapsulated in the most reliable multiplex subframe.
  • the basic layer data is encapsulated in the most reliable multiplex subframe.
  • one service corresponds to multiple multiplex subframes.
  • the audio data and the video data are separately encoded, and the layer number M1 of the audio data and the layer number M2 of the video data may be the same or different; M is the maximum value in M1 and M2; and M1 and M2 are not equal to 1.
  • a multiplexed sub-frame can encapsulate the data layer of 0, 1 or more videos, or can encapsulate the data layer of 0, 1 or more audio;
  • each layer can also be numbered according to the importance of the data, such as starting from 0. The smaller the number, the higher the importance.
  • the number of layers is the basic layer, and the number of layers is the expansion layer.
  • the number of layers M1-1 is the extension layer M1-1.
  • the traffic channels are divided into three different levels: a high-reliability channel, a medium-reliable channel, and a low-reliability channel.
  • the multiplexed subframes are respectively transmitted in channels of different levels of reliability, and the same program is transmitted.
  • the audio and video data are also encoded into a base layer, an extension layer 1 and an extension layer 2, and the data of the base layer is encapsulated in a multiplex subframe transmitted on a highly reliable channel, and the data of the extension layer 1 is encapsulated in the medium.
  • the data of the extension layer 2 is encapsulated in a multiplex subframe transmitted on the low reliability channel.
  • Program 1 is composed of multiplexed sub-frames 1, multiplexed sub-frames! ⁇ , multiplex sub-frame j, three multiplex sub-frames are arranged in a high-reliability channel, a medium-reliable channel, and a low-reliability channel, multiplex subframe 1 encapsulates base layer data, and multiplex subframe k encapsulation extension layer 1 data, the decoding of the data of the extension layer 1 depends on the base layer data, the multiplex subframe j encapsulates the extension layer 2 data, and the decoding of the data of the extension layer 2 depends on the data of the extension layer 1. If the extension layer 1 is not correctly received, the extension layer 2 cannot be decoded.
  • the program 2 is composed of a multiplex subframe 2, a multiplex subframe k+1, and a multiplex subframe j+1, and the three multiplex subframes are respectively arranged in a high-reliability channel, a reliable channel, and low reliability. In the channel.
  • the time stamp is carried in the audio segment and the video segment.
  • the audio and video data with the same time stamp at different levels are synchronized into the decoder at the same time stamp, and the implementation is different. Synchronous decoding and playback of hierarchical audio and video data.
  • the multiplexed frame header or the multiplexed sub-frame header or the control information channel also needs to carry hierarchical coding parameters.
  • the hierarchical coding parameters include:
  • Hierarchical coding depends on the subframe number, when the decoding of audio and video data of the multiplex subframe depends on other complex When the audio and video data of the subframe is used, it is set as the dependent multiplex subframe number; when the multiplex subframe transmits the base layer audio and video data, it is set as its own multiplexed subframe number.
  • the hierarchical coding parameter may further include:
  • the audio hierarchical coding parameter indication is: a 1-bit field, which is used to indicate whether there is an audio hierarchical coding parameter in the multiplex subframe, and can be represented by T, and '0, indicating no.
  • the audio hierarchical coding parameter indication is 1, it indicates that there is an audio hierarchical coding parameter in the multiplex subframe, and the hierarchical coding parameter further needs to include: an audio grading coding start layer: used to indicate a start layer of audio grading coding in the multiplex subframe Number, the number of the starting layer;
  • Number of end layers of audio hierarchical coding Indicates the number of end layers of audio hierarchical coding in the multiplex subframe, that is, the number of the end layer.
  • This embodiment provides a method for hierarchical coding multiplexing. After receiving a multiplex frame, the terminal uses the following steps to extract hierarchical coded data:
  • Step 701 Receive a multiplex frame, and extract a multiplexed frame header and a multiplexed frame payload.
  • Step 702 Take out the multiplex sub-frame, and take out the multiplex sub-frame header, the audio segment, and the video segment data.
  • Step 703 Obtain a dependency relationship of the audio and video data in one or more multiplexed subframes according to the hierarchical coding parameters encapsulated in the multiplex sub-frame header or the multiplex frame header or the control information channel.
  • Step 704 Combine audio and video data of multiple multiplex sub-frames, perform audio and video decoding, and play.
  • step 701 if the parameters of the multiplexed frame header are transmitted in the control channel, it is not necessary to take out the multiplexed frame header.
  • the terminal needs to synchronize different levels of data into the decoder according to the time stamp in the audio segment or the video segment to ensure correct decoding of audio and video data of different levels.
  • the method of the embodiment solves the multiplexing method for transmitting hierarchically encoded audio and video data, has high flexibility, and realizes transmission of different levels of data in different reliability channels.
  • the channel is composed of a control information channel and a traffic channel.
  • the traffic channel is divided into three channels with different reliability, which are 36Kbit/s high-reliability channel, 36Kbit/s medium-reliable channel, and 36Kbit/s low-reliability channel.
  • Two programs are simultaneously transmitted in the traffic channel, and the total bandwidth of each program is 54 Kbit/s, and only audio data is transmitted, and the audio data is encoded into three levels: a basic layer of 18 Kbit/s, and an extension layer of 18 Kbit/s. 18Kbit/s expansion layer II.
  • Each program consists of 3 multiplexed sub-frames, a total of 6 multiplexed sub-frames, the first program uses the first, third, and fifth multiplexed sub-frames, and the second program uses the second, fourth, and sixth multiplexers. frame.
  • Transmitting the hierarchical coding parameters in the multiplex subframe header or the multiplex frame header or the control information channel including: hierarchical coding dependent subframe number, audio hierarchical coding start layer number, audio hierarchical coding end layer number, audio hierarchical coding parameter indication .
  • Step 701 Receive a multiplexing frame from a traffic channel, and extract a multiplexing frame header and a multiplexing frame payload.
  • Step 702 Take out the multiplex sub-frame, and take out the multiplex sub-frame header, the audio segment, and the video segment data.
  • Step 703 Obtain a dependency relationship between the audio and video data in one or more multiplexed subframes according to the hierarchical coding parameters encapsulated in the multiplex sub-frame header or the multiplex frame header or the control information channel.
  • Step 704 Combine the audio and video data of the multiple multiplex sub-frames, perform audio and video decoding according to the time stamp in the audio segment or the video segment, and play.
  • This multiplexing method uses the structure of variable length frames, the frame overhead is small, the multiplexing overhead is less than 5%, and the efficiency of the transmitted audio and video payload is 95%.
  • the total bandwidth of one service 54Kbit/s
  • the total length of the data payload exceeds 51Kbit/s.
  • the multiplexed frame is used to carry the hierarchically encoded audio and video data, and the hierarchically encoded data of different importance is transmitted in different reliable physical channels, so that the reliability of the terminal receiving is improved, and the most basic service can be received when the signal is poor. Moreover, the overhead of the frame header is reduced, and the data is encapsulated according to the importance of the information, so that important data is protected, and the most basic program content can be provided in the case of poor signal conditions.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

L'invention porte sur une extrémité d'envoi, un terminal, un système et un procédé pour multiplexage en codage hiérarchique, le procédé comprenant les opérations suivantes : un canal de trafic est divisé en de multiples canaux ayant différentes fiabilités, des données d'un service sont codées en M niveaux, lesdites données de M niveaux sont encapsulées dans N différentes sous-trames de multiplexage, et lesdites N sous-trames de multiplexage sont encapsulées pour être envoyées sur L canaux ayant différentes fiabilités respectivement ; M, N et L étant tous des entiers naturels supérieurs à 1. Pour utilisation de la solution technique, des données audio et vidéo à codage hiérarchique sont transportées par des trames de multiplexage, et des données à codage hiérarchique d'importances différentes sont transmises sur des canaux physiques ayant des fiabilités différentes, ce qui améliore la fiabilité de réception par le terminal et assure que le service le plus basique peut être reçu quand le signal est faible.
PCT/CN2012/081196 2011-09-20 2012-09-10 Extrémité d'envoi, terminal, système et procédé pour multiplexage en codage hiérarchique WO2013040996A1 (fr)

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CN110780134B (zh) * 2019-10-30 2022-04-26 深圳市国电科技通信有限公司 一种提升工控类数据采集系统可靠性的系统优化方法
CN115211127A (zh) * 2020-03-13 2022-10-18 华为技术有限公司 传输流ts的处理方法、装置和系统
CN113038128B (zh) * 2021-01-25 2022-07-26 腾讯科技（深圳）有限公司 数据传输方法、装置、电子设备及存储介质

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