WO2017092434A1 - Procédé et dispositif de transmission audio/vidéo en temps réel, procédé et dispositif de lecture de données audio/vidéo en temps réel - Google Patents

Procédé et dispositif de transmission audio/vidéo en temps réel, procédé et dispositif de lecture de données audio/vidéo en temps réel Download PDF

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Publication number
WO2017092434A1
WO2017092434A1 PCT/CN2016/096990 CN2016096990W WO2017092434A1 WO 2017092434 A1 WO2017092434 A1 WO 2017092434A1 CN 2016096990 W CN2016096990 W CN 2016096990W WO 2017092434 A1 WO2017092434 A1 WO 2017092434A1
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WIPO (PCT)
Prior art keywords
program
audio
video
slice
specific information
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PCT/CN2016/096990
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English (en)
Chinese (zh)
Inventor
郑吉剑
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乐视控股（北京）有限公司
乐视致新电子科技（天津）有限公司
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Publication of WO2017092434A1 publication Critical patent/WO2017092434A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/40—Network security protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/65—Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
    • H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
    • H04L63/0435—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload wherein the sending and receiving network entities apply symmetric encryption, i.e. same key used for encryption and decryption
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/75—Media network packet handling
    • H04L65/762—Media network packet handling at the source 
    • 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
    • H04N21/2347—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving video stream encryption
    • H04N21/23476—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving video stream encryption by partially encrypting, e.g. encrypting the ending portion of a movie
    • 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
    • H04N21/2368—Multiplexing of audio and video streams

Definitions

  • the embodiments of the present invention relate to the field of audio and video technologies, and in particular, to a method and device for real-time transmission of audio and video, and a method and device for playing audio and video in real time.
  • the HLS (HTTP Live Streaming) protocol is an extended HTTP protocol developed by Apple Inc. for use in live webcast and on-demand scenarios.
  • the protocol encapsulates data using a Transport Stream (TS).
  • TS Transport Stream
  • Each transport stream carries data information such as video (Video), audio (Audio), and the like, and carries flow index information such as a Program Association Table (PAT) and a Program Map Table (PMT).
  • PAT Program Association Table
  • PMT Program Map Table
  • the HLS protocol supports encrypting the slice of the transport stream.
  • the encryption scheme is to encrypt each slice. Therefore, the operation amount of the encryption method is large, and the calculation amount of the receiving end when decrypting is corresponding. Increase. Therefore, the prior art encryption scheme requires either a separate hardware encryption and decryption device support or a strong processing capability of the CPU if the quality of the transmission is to be guaranteed.
  • the embodiment of the present invention provides a method and a device for real-time transmission of audio and video, a method and a device for playing audio and video in real time, which are used to solve the technical problem of excessive computation of encryption and decryption in the prior art.
  • the embodiment of the present application provides a real-time audio and video transmission method, including:
  • the encrypting the program specific information includes encrypting the program association table and the program map.
  • the method further includes:
  • the method further includes:
  • the application also provides a real-time audio and video playback method, including:
  • the program slice is downloaded, and the program slice is parsed based on the decrypted program specific information.
  • the encrypted program specific information slice includes an encrypted program association table and an encrypted program mapping table.
  • the decrypting the encrypted program specific information slice comprises: decrypting the encrypted program association table and the encrypted program mapping table.
  • the application provides an audio and video real-time transmission device, including:
  • An encryption module configured to encrypt program specific information and store the slice as program specific information
  • a multiplexer configured to multiplex the video original stream of the packet and the audio original stream of the packet into a program slice
  • a transmission module configured to transmit the program specific information and the program slice.
  • the encrypting the program specific information includes encrypting the program association table and the program map.
  • a video packetizer and an audio packetizer are also included:
  • the video packetizer configured to package the video original stream into a grouped video original stream
  • the audio packetizer is configured to package the audio original stream into a packetized audio original stream.
  • the video encoder configured to encode video data to form the video original stream
  • the audio encoder is configured to encode audio data to form the audio original stream.
  • the application provides an audio and video real-time playing device, including:
  • a first downloading module configured to download the encrypted program specific information slice
  • a decryption module configured to decrypt the encrypted program specific information slice to obtain decrypted program specific information
  • a second downloading module configured to download a program slice, and parse the program slice according to the decrypted program specific information.
  • the encrypted program specific information slice includes an encrypted program association table and an encrypted program mapping table.
  • the decryption module is further configured to decrypt the encrypted program association table and the encrypted program mapping table.
  • the embodiment of the present application provides a non-transitory computer readable storage medium, wherein the non-transitory computer readable storage medium can store a computer program, and the program can implement the above-mentioned audio and video real-time transmission method when executed. Some or all of the steps.
  • the embodiment of the present application provides a non-transitory computer readable storage medium, wherein the non-transitory computer readable storage medium can store a computer program, and when the program is executed, the audio and video real-time playing method can be implemented. Some or all of the steps.
  • An embodiment of the present application further provides an electronic device, including: one or more processors; and a memory; wherein the memory stores instructions executable by the one or more processors, the instructions being The one or more processors are executed to enable the one or more processors to perform the above-described audio and video real-time transmission method of the present application.
  • An embodiment of the present application further provides an electronic device, including: one or more processors; and a memory; wherein the memory stores instructions executable by the one or more processors, the instructions being The one or more processors are executed to enable the one or more processors to perform the above-described audio and video real-time playback method of the present application.
  • An embodiment of the present application provides a computer program product, the computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions, when the program instructions are executed by a computer, The computer is caused to perform the above-mentioned audio and video real-time transmission method in the embodiment of the present application.
  • An embodiment of the present application provides a computer program product, the computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions, when the program instructions are executed by a computer, The computer is caused to perform the above-mentioned audio and video real-time playing method in the embodiment of the present application.
  • the audio and video real-time transmission method and device provided by the embodiments of the present application, the audio and video real-time playing method and device do not need to encrypt and decrypt each slice, and can simultaneously reduce the encryption operation amount of the transmission end and reduce the decryption operation amount of the receiving end. .
  • FIG. 1 is a schematic diagram of a format of a slice of a transport stream in the prior art
  • FIG. 2 is a schematic diagram of a format of a program slice of an audio and video real-time transmission method according to an embodiment of the present application
  • FIG. 3 is a schematic diagram of a format of a program specific information slice according to an audio and video real-time transmission method according to an embodiment of the present application
  • FIG. 4 is a schematic structural diagram of a packet of a slice of a real-time audio and video transmission method according to an embodiment of the present application
  • FIG. 5 is a flowchart of a method for real-time transmission of audio and video according to an embodiment of the present application
  • FIG. 6 is a flowchart of a method for real-time playing audio and video according to an embodiment of the present application
  • FIG. 7 is a schematic structural diagram of an audio and video real-time transmission apparatus according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of an audio and video real-time playing device according to an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of hardware of a device for real-time audio and video transmission according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of hardware of a device for playing audio and video in real time according to an embodiment of the present disclosure.
  • the present application will first introduce the format of the slice of the transport stream in the prior art.
  • FIG. 1 is a schematic diagram of a format of a slice of a transport stream in the prior art.
  • the transport stream is a hierarchical encapsulation format, and the program association table needs to be first found to obtain the number of program map tables in the transport stream, thereby obtaining the number of programs in the transport stream, where each program map corresponds to one program, and then A video packet identifier (PID) and an audio packet identifier of the program are obtained according to the program map.
  • PID video packet identifier
  • audio packet identifier of the program are obtained according to the program map.
  • the slice of the transport stream is used to facilitate the user to receive the transport stream at any time and ensure that the audio and video data in the slice is not pirated, and the transmission end periodically inserts the program association table and the program map into the transport stream.
  • the slice and encrypting each slice; thus causing the slice of the transport stream in the prior art to include at least two encrypted program association tables and a program map table, and the receiving end also needs to receive the slice after receiving All program association tables and program map tables in each slice are decrypted.
  • a program is cut into n slices, user A can receive from the program association table 1, and user B can receive from the program association table n to find the program map in the vicinity, thereby facilitating live broadcast;
  • the program encrypts the program association tables 1 to n and the program maps 1 to n in the transmission process, so the receiving end also needs to decrypt the received program association tables 1 to n and the program maps 1 to n. . Therefore, the prior art greatly increases redundant data in the transport stream.
  • FIG. 2 is a schematic diagram of a format of a program slice of an audio and video real-time transmission method according to an embodiment of the present application.
  • the transport stream in the embodiment of the present application is a packet-based stream, and each group of transport streams is divided into a plurality of slices. It should be noted that only one slice format is shown in FIG. 3, and the format of other slices is actually The slice format in Figure 2 is similar.
  • the program slice in the embodiment of the present application includes a packet 1, a packet 2, a packet n-1, and a packet n, and each of the program slices does not include a program association table and a program mapping table.
  • FIG. 3 is a schematic diagram of a format of a program specific information slice according to an audio and video real-time transmission method according to an embodiment of the present application.
  • the program specific information slice in this embodiment includes only two program specific information including an encrypted program association table and a program map, and does not include video data and audio data.
  • the program specific information slice can be stored as a file with the file name init.ts.
  • FIG. 4 is a schematic structural diagram of a packet of a slice of a real-time audio and video transmission method according to an embodiment of the present application.
  • the slice shown in this embodiment may be a program specific information slice or a program slice, and each slice includes a header and data, and each packet is 188 bytes or 204 bytes, of which 204 bytes are The packet is formed by adding 16 bytes of CRC check data after the 188-byte packet.
  • the header can also include an extended self-use area, with a header length of 4 bytes, and a total of 184 bytes from the usage area and packet data.
  • the packet header consists of a sync byte, a transmission error indicator, a payload unit start indicator, a transmission priority, a packet identifier, a transmission scrambling control, an adaptive zone control, and a continuous counter.
  • the packet correlation in the data stream can be detected by the automatic correlation feature of the bit string of the synchronization byte, and the packet synchronization can be established.
  • the error correction decoder can be used. Indicates a 1-bit error, but cannot correct the error; the payload unit start indicator indicates whether the packet has a determined start message; the transmission priority is used to assign a priority to the packet; the packet identifier value is determined by the user Determining, the decoder distinguishes different original stream (ES) packets according to the packet identifier to reconstruct the original stream; the transmission scrambling control can be used to indicate whether the packet content is scrambled; the adaptive area control is used to indicate that there is No adaptive zone, usually represented by 2 bits, for example, "01" means useful information, but no adaptive zone, "10” means no useful information, and there is adaptive zone, "11” means useful information and adaptive Area, "00” means no definition; the continuous counter can count the transmission order of the packet identifier. According to the reading
  • the packet identifier is a unique identifier in the transport stream, and the data content in the packet is determined by the packet identifier. If the packet identifier in the header of a packet in a transport stream is 0, then the data content of the packet is the program association table. If it is not 0, it is video data, audio data, program map, or other type of data.
  • FIG. 5 is a flowchart of a method for real-time transmission of audio and video according to an embodiment of the present application.
  • the real-time transmission of audio and video includes real-time transmission of video data and real-time transmission of audio data, so the original video stream and the audio original stream need to be packaged into a packetized video original stream and a packetized audio original stream, respectively;
  • the original stream, and the audio original stream of the packet are multiplexed and stored as a program slice; in addition, the embodiment needs to encrypt and package the program association table and the program mapping table separately, as follows:
  • S101 Encoding the video data to form an elementary stream (ES);
  • the video original stream is the original base stream output by the encoder, containing only the information necessary for the decoder and close to the original image.
  • the encoded original video stream may be in the MPEG-2 or MPEG-4 format, and may also be in the H.264 format or other formats, which is not limited in this application.
  • S102 Packet the video original stream into a packetized video elementary stream (PES);
  • PES packetized video elementary stream
  • the packetized video original stream exists in the form of a divided data packet, mainly by adding a time stamp to the video original stream, such as a description of the data frame, and the packetized video original stream provides a standard header and packing method, and provides decoding. Time sign.
  • the audio coding method in this step may be MPEG-1 audio coding, or may be edited by MPEG-2 AAC (Advanced Audio Coding).
  • the code is not limited in this application.
  • the audio packetizer 202 divides the audio original stream into segments or packs them into groups, and adds the corresponding header files to form a packet's original audio stream.
  • the packets of the original audio stream and the packets may be discontinuous.
  • S300 The grouped video original stream and the grouped audio original stream are multiplexed and stored as a program slice.
  • S400 is a package of program specific information slices, specifically: encrypting program specific information, and storing it as a program specific information slice. Encrypting the program specific information includes encrypting the program association table and the program map.
  • step S500 the program specific information and the program slice are transmitted.
  • FIG. 6 is a flowchart of a method for real-time playing audio and video according to an embodiment of the present application.
  • S301 Download the encrypted program specific information slice; the encrypted program specific information slice includes the encrypted program association table and the encrypted program mapping table.
  • decrypting the encrypted program specific information slice includes: decrypting the encrypted program association table and the encrypted program mapping table.
  • the program association table is parsed to obtain the package identifier of the program map.
  • the program association table with the packet identifier of 0 is first parsed to obtain the package identifier of the program map.
  • the program map table is searched according to the packet identifier of the mapping table; in the present embodiment, the number of program map tables is equal to the number of programs.
  • the packet identifier of the search video data and the packet identifier of the audio data are used to obtain video data and audio data.
  • the video data and the audio data are parsed according to the packet identifier of the video data and the packet identifier of the audio data.
  • the receiving end is usually a consumer electronic product, which can be a smart TV, a set top box, a projector, a video player, a personal computer, a smart phone, a tablet computer, and the like.
  • FIG. 7 is a schematic structural diagram of an audio and video real-time transmission apparatus according to an embodiment of the present application.
  • the audio-video real-time transmission apparatus 10 of the embodiment of the present application includes a video encoder 101, an audio encoder 201, a video packetizer 102, an audio packetizer 202, a multiplexer 300, an encryption module 400, and a transmission module 500.
  • the collected video data and audio data are analog data
  • sampling, quantization and compression coding are required to form a video original stream and an audio original stream
  • the video original stream and the audio original stream are continuous streams that are not segmented.
  • Video encoder 101 is operative to encode the video data into a video original stream.
  • the video original stream includes a plurality of access units, each of which is encoded data of an image.
  • the video coding method of the present application may be performed by using transform coding, entropy coding, motion estimation, motion compensation, or hybrid coding, which is not limited in this application.
  • the audio encoder 201 is for encoding the audio data separately to form an audio original stream.
  • the digital audio signal if the digital audio signal is directly transmitted without compression, it will occupy a large bandwidth. Therefore, it is necessary to use audio compression technology to process the audio data in order to effectively transmit the audio data.
  • the digital audio compression coding compresses the audio data signal as much as possible while ensuring that the signal does not cause distortion in the sense of hearing.
  • Digital audio compression coding is implemented by removing redundant components in the sound signal.
  • the audio coding method of the present application may be Waveform coding, parameter coding, or hybrid coding, which is not limited in this application.
  • Video packetizer 102 is used to packet the video original stream into a packetized video original stream.
  • the video packetizer 102 divides the video original stream into segments or packs them into groups, and adds corresponding header files to form a packetized video original stream.
  • the packets of the original video stream and the packets may be discontinuous. of.
  • the audio packetizer 202 is used to pack the audio original stream into a packetized audio original stream.
  • the audio packetizer 202 divides the audio original stream into segments or packs them into groups, and adds corresponding header files to form a grouped audio original stream.
  • the packets of the audio original stream and the packets may be discontinuous. of.
  • the multiplexer 300 is configured to multiplex the video original stream of the packet and the audio original stream of the packet into a program slice, and transmit the program specific information and the program slice.
  • the multiplexer 300 packs the program association table, the program map table, the packetized video original stream, and the packetized audio original stream into slices of a fixed length of 188 bytes at the time of transmission.
  • the encryption module 400 is configured to encrypt program specific information and store it as a program specific information slice.
  • the program specific information is encrypted, including encrypting the program association table and the program map.
  • the transmission module 500 is configured to transmit program specific information and program slices.
  • the above-mentioned audio and video real-time transmission device 100 provided by the embodiment of the present invention can be specifically applied to an electronic device in an actual application, and the related function module can be implemented by a hardware processor, which is usually a video server of various types.
  • FIG. 8 is a schematic structural diagram of an audio and video real-time playing device according to an embodiment of the present application.
  • the audio and video real-time playing device 400 of the embodiment of the present application includes a first downloading module 401, a decrypting module 402, and a second downloading module 403.
  • the first downloading module 401 is configured to download the encrypted program specific information slice; the encrypted program specific information
  • the slice includes an encrypted program association table and an encrypted program map.
  • the decryption module 402 is configured to decrypt the encrypted program specific information slice to obtain the decrypted program specific information; since the encrypted program specific information slice includes the encrypted program association table and the encrypted program mapping table, the decryption module 402 further It is used to decrypt the encrypted program association table and the encrypted program mapping table.
  • the second downloading module 403 is configured to download a program slice and parse the program slice according to the decrypted program specific information.
  • the foregoing technical solution of the embodiment of the present application does not need to periodically insert a program association table and a program mapping table, but only needs to separately package and encrypt the program association table and the program mapping table, so as to maintain the existing technology.
  • the transport stream in the middle is compatible, and at the same time reduces the effect of redundant data in the transport stream.
  • the embodiment of the present application further provides a non-transitory computer readable storage medium, where the non-transitory computer readable storage medium can store a program, and when executed, the program can implement an audio and video provided by any one of the foregoing embodiments.
  • the embodiment of the present application further provides a non-transitory computer readable storage medium, where the non-transitory computer readable storage medium can store a program, and when executed, the program can implement an audio and video provided by any one of the foregoing embodiments.
  • FIG. 9 is a schematic diagram showing the hardware structure of an electronic device for real-time transmission of audio and video according to an embodiment of the present application. As shown in FIG. 9, the device includes:
  • processors 910 and memory 920 one processor 910 is taken as an example in FIG.
  • the apparatus for performing the audio-video real-time transmission method may further include: an input device 930 and an output device 940.
  • the processor 910, the memory 920, the input device 930, and the output device 940 may be connected by a bus or other means, as exemplified by a bus connection in FIG.
  • the memory 920 is a non-transitory computer readable storage medium and can be used to store non-volatile software programs.
  • the program, the non-volatile computer executable program and the module such as the program instruction/module corresponding to the audio and video real-time transmission method in the embodiment of the present application.
  • the processor 910 executes various functional applications and data processing of the electronic device by executing non-volatile software programs, instructions, and modules stored in the memory 920, that is, realizing the audio and video real-time transmission method of the above method embodiments.
  • the memory 920 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function; the storage data area may store data created according to use of the audio-visual real-time transmission device, and the like.
  • memory 920 can include high speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.
  • memory 920 can optionally include memory remotely located relative to processor 910, which can be connected to the audio and video real-time transmission device over a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.
  • Input device 930 can receive input numeric or character information and generate key signal inputs related to user settings and function control of the audio and video real time transmission device.
  • Output device 940 can include a display device such as a display screen.
  • the one or more modules are stored in the memory 920, and when executed by the one or more processors 910, perform an audio and video real-time transmission method in any of the above method embodiments.
  • FIG. 10 is a schematic diagram showing the hardware structure of an electronic device for playing audio and video in real time according to an embodiment of the present invention. As shown in FIG. 10, the device includes:
  • processors 1010 and a memory 1020 are illustrated by one processor 1010 in FIG.
  • the apparatus for performing the audio and video real time playing method may further include: an input device 1030 and an output device 1040.
  • the processor 1010, the memory 1020, the input device 1030, and the output device 1040 may be connected by a bus or other means, as exemplified by a bus connection in FIG.
  • the memory 1020 is used as a non-transitory computer readable storage medium, and can be used for storing a non-volatile software program, a non-volatile computer executable program, and a module, such as a program corresponding to the audio and video real-time playing method in the embodiment of the present application. Instruction/module.
  • the processor 1010 runs the non-volatile software stored in the memory 1020 The program, the instruction, and the module, thereby performing various functions and applications of the server and data processing, that is, realizing the audio and video real-time playing method of the foregoing method embodiment.
  • the memory 1020 may include a storage program area and an storage data area, wherein the storage program area may store an operating system, an application required for at least one function; the storage data area may store data created according to use of the audio-visual real-time playback device, and the like.
  • memory 1020 can include high speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.
  • memory 1020 can optionally include memory remotely located relative to processor 1010 that can be connected to an audiovisual real-time playback device over a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.
  • the input device 1030 can receive input numeric or character information and generate key signal inputs related to user settings and function control of the audio and video real time playback device.
  • the output device 1040 can include a display device such as a display screen.
  • the one or more modules are stored in the memory 1020, and when executed by the one or more processors 1010, perform an audio and video real-time playback method in any of the above method embodiments.
  • the electronic device of the embodiment of the invention exists in various forms, including but not limited to:
  • Mobile communication devices These devices are characterized by mobile communication functions and are mainly aimed at providing voice and data communication.
  • Such terminals include: smart phones (such as iPhone), multimedia phones, functional phones, and low-end phones.
  • Ultra-mobile personal computer equipment This type of equipment belongs to the category of personal computers, has computing and processing functions, and generally has mobile Internet access.
  • Such terminals include: PDAs, MIDs, and UMPC devices, such as the iPad.
  • Portable entertainment devices These devices can display and play multimedia content. Such devices include: audio, preview players (such as iPod), handheld game consoles, e-books, and smart toys and portable car navigation devices.
  • the composition of the server includes a processor, a hard disk, a memory, and a system.
  • the bus, etc. is similar to a general-purpose computer architecture, but requires high processing power, stability, reliability, security, scalability, manageability, and the like.
  • the device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, ie may be located A place, or it can be distributed to multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment. Those of ordinary skill in the art can understand and implement without deliberate labor.

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  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
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  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

L'invention concerne un procédé de transmission audio/vidéo, consistant : à multiplexer un flux vidéo élémentaire en paquets et un flux audio élémentaire en paquets et ensuite les stocker comme secteurs de programme ; à chiffrer les informations spécifiques de programme et les stocker comme secteurs d'informations spécifiques de programme ; et à transmettre des informations spécifiques de programme et les secteurs de programme. Le procédé de transmission audio/vidéo en temps réel, un procédé et un dispositif de lecture audio/vidéo en temps réel sont aptes à réduire la quantité de calcul pour un chiffrement et un déchiffrement dans l'état de la technique.
PCT/CN2016/096990 2015-12-03 2016-08-26 Procédé et dispositif de transmission audio/vidéo en temps réel, procédé et dispositif de lecture de données audio/vidéo en temps réel WO2017092434A1 (fr)

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CN201510886024.6A CN105915493A (zh) 2015-12-03 2015-12-03 音视频实时传输方法及装置、音视频实时播放方法及装置

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CN110809191B (zh) * 2019-10-08 2022-01-07 烽火通信科技股份有限公司 一种基于索引校验和实时转封装的视频防篡改方法及系统
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