WO2017076325A1 - Procédé et appareil de lecture de flux de code - Google Patents

Procédé et appareil de lecture de flux de code Download PDF

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Publication number
WO2017076325A1
WO2017076325A1 PCT/CN2016/104583 CN2016104583W WO2017076325A1 WO 2017076325 A1 WO2017076325 A1 WO 2017076325A1 CN 2016104583 W CN2016104583 W CN 2016104583W WO 2017076325 A1 WO2017076325 A1 WO 2017076325A1
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WO
WIPO (PCT)
Prior art keywords
code stream
channel
error
error code
packet loss
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PCT/CN2016/104583
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English (en)
Chinese (zh)
Inventor
陈幸
熊勤
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中兴通讯股份有限公司
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Publication of WO2017076325A1 publication Critical patent/WO2017076325A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/4405—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream decryption
    • 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
    • H04N21/454—Content or additional data filtering, e.g. blocking advertisements

Definitions

  • Embodiments of the present disclosure relate to the field of Internet Protocol Television (IPTV) technology, for example, to a method and apparatus for code stream broadcast.
  • IPTV Internet Protocol Television
  • IPTV IPTV has become an important tool for people to obtain information.
  • the secure streaming of IPTV streams has always been the most basic requirement of broadband operators and content providers.
  • IPTV can only broadcast content that has been reviewed by content providers.
  • the streaming media server is the stream that will be received from the channel server.
  • Direct decoding but the content provided by the content provider may cause output stream error due to malicious interference or transmission failure during network transmission, which may cause decoding abnormality and challenge the safe broadcast of IPTV content.
  • the embodiments of the present disclosure provide a method and an apparatus for playing a code stream, which can reduce the problem that the received channel code stream is directly decoded in the related art, and the decoding abnormality may occur.
  • an embodiment of the present disclosure provides a method for playing a code stream, the method comprising: receiving a channel code stream uploaded by a channel server and detecting data obtained by detecting, by a channel server, a channel code stream; The channel code stream is detected, the error code stream in the channel code stream is filtered out, and the code stream to be decoded is output; and the code stream to be decoded is decoded to obtain audio and video data for playing.
  • the channel code stream uploaded by the channel server and the detection data obtained by the channel server detecting the channel code stream include: receiving the channel code stream uploaded by the channel server and the channel obtained by the channel server detecting the channel code stream. Packet loss rate of the code stream;
  • the channel code stream is detected according to the detection data, the error code stream in the channel code stream is filtered out, and the code stream to be decoded is output, including: detecting the channel code stream according to the packet loss rate, and filtering out the channel code stream. The error code stream and output the code stream to be decoded.
  • the channel code stream is detected according to the packet loss rate, including: comparing the packet loss rate with the preset packet loss rate, and marking the channel code stream as the normal stream when the packet loss rate is not greater than the preset packet loss rate.
  • the packet loss rate When the packet loss rate When the preset packet loss rate is greater than the preset packet loss rate, the channel code stream is marked as an error code stream.
  • detecting the channel code stream according to the detection data, filtering out the error code stream in the channel code stream, and outputting the code stream to be decoded includes: marking the error code stream in the channel code stream; and multicasting according to the error code stream The number of addresses and ports, marking the type of error stream; and filtering the error stream based on the type of error stream, and outputting the stream to be decoded.
  • the type of the error code stream is marked according to the multicast address of the error code stream and the number of ports, including: when the error code stream includes multiple identical multicast addresses and ports, the type of the marked error stream is The abnormal code stream; and when the multicast address and port of the error code stream are the same as the multicast address and port of the channel code stream received within the preset time, the type of the marked error code stream is a repetition code stream.
  • filtering the error code stream according to the type of the error code stream, and outputting the code stream to be decoded including: filtering out the error code stream when the type of the error code stream is a repeated code stream; and when the error code stream When the type is an abnormal code stream, the first code stream in the error code stream is reserved, the channel code stream except the first code stream is filtered out, and the first code stream is output as the code stream to be decoded.
  • the embodiment of the present disclosure further provides a device for streaming a code stream, the device comprising: a receiving module, configured to receive a channel code stream uploaded by a channel server and detect the channel code stream by a channel server. Data; the filtering module is configured to detect the channel code stream according to the detected data, filter out the error code stream in the channel code stream, and output the code stream to be decoded; and the decoding module, set to decode the code stream to be decoded, and obtain Audio and video data for playback.
  • a receiving module configured to receive a channel code stream uploaded by a channel server and detect the channel code stream by a channel server. Data
  • the filtering module is configured to detect the channel code stream according to the detected data, filter out the error code stream in the channel code stream, and output the code stream to be decoded
  • the decoding module set to decode the code stream to be decoded, and obtain Audio and video data for playback.
  • the receiving module is configured to: receive a channel code stream uploaded by the channel server, and a packet loss rate of the channel code stream obtained by the channel server detecting the channel code stream;
  • the filtering module is configured to: detect the channel code stream according to the packet loss rate, filter out the error code stream in the channel code stream, and output the code stream to be decoded.
  • the filtering module is configured to: compare the packet loss rate with the preset packet loss rate, and mark the channel code stream as a normal code stream when the packet loss rate is not greater than the preset packet loss rate, and when the packet loss rate is greater than the preset When the packet loss rate is used, the tag channel code stream is the error code stream.
  • the filtering module includes: a first marking unit configured to mark an error code stream in the channel code stream; and a second marking unit configured to mark an error according to the multicast address of the error stream and the number of ports a type of the code stream; and a filtering unit configured to filter the error code stream according to the type of the error code stream and output the code stream to be decoded.
  • the second marking unit is configured to: when the error code stream contains multiple identical multicast addresses and ports, the type of the marked error stream is an abnormal code stream; and when the error code stream is multicast address and port and When the multicast address and port of the channel code stream received within the preset time are the same, the type of the error code stream is a duplicate code stream.
  • the filtering unit is configured to: when the type of the error code stream is a repeated code stream, filter out the error code stream; and when the type of the error code stream is an abnormal code stream, retain the first code stream in the error code stream. And filtering out the channel code stream except the first code stream, and outputting the first code stream as the code stream to be decoded.
  • an embodiment of the present disclosure further provides a non-transitory computer readable storage medium storing computer executable instructions, the computer executable instructions being configured to perform the method described above.
  • an embodiment of the present disclosure further provides an electronic device, including:
  • At least one processor At least one processor
  • the memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to cause the at least one processor to perform the method described above.
  • the disclosure receives the channel code stream uploaded by the channel server and the detection data obtained by the channel server detecting the channel code stream, detects the channel code stream according to the detected data, filters out the error code stream in the channel code stream, and outputs the error code stream.
  • the code stream is decoded, and the code stream to be decoded is decoded to obtain audio and video data for playing, which reduces the problem of directly decoding the received channel code stream in the related art, and may cause decoding abnormality.
  • FIG. 1 is a flowchart of a method of code stream playout according to a first embodiment of the present disclosure
  • FIG. 2 is a flowchart of a method for code stream playout according to a second embodiment of the present disclosure
  • FIG. 3 is a flowchart of a method for code stream playout according to a third embodiment of the present disclosure
  • FIG. 4 is a structural diagram of an apparatus for streaming a code stream according to a fourth embodiment of the present disclosure.
  • FIG. 5 is a structural diagram of an apparatus for streaming a code stream according to a fifth embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of an electronic device according to a seventh embodiment of the present disclosure.
  • FIG. 1 is a flow chart showing a method of code stream playout in the first embodiment of the present disclosure.
  • step 110 the channel code stream uploaded by the channel server and the detection data obtained by the channel server detecting the channel code stream are received.
  • the detection data obtained by detecting the channel code stream by the channel server uploaded by the channel server received in step 110 may be the packet loss rate of the channel code stream, or may be used to determine whether the channel code stream is transmitted normally.
  • step 120 the channel code stream is detected according to the detected data, the error code stream in the channel code stream is filtered out, and the code stream to be decoded is output.
  • the channel code stream is detected according to the detection data, and the error code stream is filtered out, which may include: marking the error code stream in the channel code stream; marking the number according to the multicast address and the number of ports of the error code stream. The type of error stream; and filtering the error stream based on the type of error stream.
  • the method of dividing the channel code stream into the normal code stream and the error code stream may be based on the packet loss rate of the channel code stream.
  • the dividing the channel code stream into the normal code stream and the error code stream according to the packet loss rate of the channel code stream may include: comparing the packet loss rate of the channel code stream with the preset packet loss rate, and when the packet loss rate is not greater than the preset lost rate.
  • the packet channel code stream is a normal code stream when the packet rate is greater, and the tag channel code stream is an error code stream when the packet loss rate is greater than the preset packet loss rate.
  • the present embodiment lists two types, but the type of the error code stream is not limited to the two types.
  • the first type of error code stream is that the channel code stream is copied into the same two copies during the transmission process due to some special reasons, such as service network abnormality or improper switch configuration. The stream cannot be decoded normally and is an abnormal code stream.
  • the second error code stream is that the multicast address and port number of the code stream are the same as the multicast address and port number of an original channel code stream in a certain period of time, because The error code stream interferes with the original channel code stream, and the error code stream is a repeated code stream.
  • the original code stream 1 multicast address is 239.255.1.1
  • the port number is 1234.
  • the code stream 2 multicast address also uses 239.255.1.1, and the port number is also 1234. Then code stream 2 will interfere with code stream 1, and code stream 2 is the repeated code stream.
  • the method for marking the type of the error stream can be judged based on the multicast address and the number of ports in the error stream.
  • the type of the error code stream that is marked according to the multicast address and the number of ports in the error code stream may include: when the error code stream includes multiple identical multicast addresses and ports, the type of the marked error code stream is an abnormal code stream; And when the multicast address and port of the error stream are the same as the multicast address and port of the channel code stream received within the preset time, the type of the marked error stream is a repeated code stream.
  • the filtering of the error code stream may include: filtering out the error code stream when the type of the error code stream is a repeated code stream; and retaining the first code stream in the error code stream when the type of the error code stream is an abnormal code stream, The channel code stream except the first code stream is filtered out.
  • the first code stream may be any one of the abnormal code streams having a normal multicast address and a port.
  • step 130 the code stream to be decoded is decoded to obtain audio and video data for playback.
  • the code stream to be decoded in step 130 is a channel code stream that is detected and filtered, and may be a channel stream that is normal in itself, or a channel code stream that is obtained by filtering the error stream.
  • the code stream to be decoded is decoded, and the audio and video data for playing is obtained, which reduces the problem that the received channel code stream is directly decoded in the related art, and the decoding abnormality may occur.
  • FIG. 2 is a flow chart showing a method for secure streaming of a code stream in a second embodiment of the present disclosure.
  • step 210 the channel code stream uploaded by the channel server and the detection data obtained by the channel server detecting the channel code stream are received.
  • the detection data obtained by detecting the channel code stream by the channel server uploaded by the channel server accepted in step 210 may be the packet loss rate of the channel code stream, or may be used to determine whether the channel code stream is transmitted normally.
  • step 220 the error code stream in the channel code stream is marked.
  • the method of marking the error code stream in the channel code stream in step 220 may be based on the packet loss rate of the channel code stream.
  • the method for marking the error code stream in the channel code stream may include comparing the packet loss rate of the channel code stream with a preset packet loss rate, and marking the channel code stream as a normal code when the packet loss rate is not greater than the preset packet loss rate. Flow, when the packet loss rate is greater than the preset packet loss rate, the tag channel code stream is the error code stream.
  • step 230 the type of the error stream is marked based on the multicast address of the error stream and the number of ports.
  • the first type of error code stream is that the code stream is copied into the same two copies during the transmission process due to some special reasons, such as service network abnormality or improper switch configuration. Can not be decoded normally, is an abnormal code stream.
  • the second error code stream is that the multicast address and port number of the code stream are the same as the multicast address and port number of an original channel code stream in a certain period of time, so the error code stream may interfere with the original channel code stream.
  • the error code stream is a repeated code stream.
  • the original stream 1 multicast address is 239.255.1.1
  • the port number is 1234.
  • the stream 2 multicast address also uses 239.255.1.1, and the port number is also 1234. Then code stream 2 will interfere with code stream 1, and code stream 2 is the repeated code stream.
  • the method for marking the type of the error stream can be judged based on the multicast address and the number of ports in the error stream.
  • the type of the error code stream that is marked according to the multicast address and the number of ports in the error code stream may include: when the error code stream includes multiple identical multicast addresses and ports, the type of the marked error code stream is an abnormal code stream; And when the multicast address and port of the error stream are the same as the multicast address and port of the channel stream received in the preset time, the type of the marked error stream is a repetition stream.
  • step 240 the error code stream is filtered according to the type of the error code stream, and the code stream to be decoded is output.
  • filtering the error code stream according to the type of the error code stream may include: filtering out the error code stream when the type of the error code stream is a repeated code stream; and when the type of the error code stream is an abnormal code stream, The first code stream in the error code stream is reserved, the channel code stream except the first code stream is filtered out, and the first code stream is output as the code stream to be decoded.
  • the first code stream may be any one of the abnormal code streams having a normal multicast address and a port.
  • step 250 the code stream to be decoded is decoded to obtain audio and video data for playback.
  • the code stream to be decoded in step 250 is a channel code stream that has been detected and filtered, and may be normal itself.
  • the channel code stream can also be used to filter the error stream to obtain the stream.
  • the channel code stream uploaded by the channel server and the channel server detect the channel code stream, and the error code stream in the channel code stream is marked; according to the multicast address and the number of ports of the error code stream, Marking the type of the error code stream; filtering the error code stream according to the type of the error code stream, and outputting the code stream to be decoded; decoding the code stream to be decoded to obtain audio and video data for playing, reducing related technologies Decoding the received channel code stream directly may cause a problem of decoding abnormality.
  • FIG. 3 is a flow chart showing a method for secure streaming of a code stream in a third embodiment of the present disclosure.
  • step 310 the channel code stream uploaded by the channel server and the packet loss rate of the channel code stream obtained by the channel server for detecting the channel code stream are received.
  • step 320 it is determined whether the packet loss rate is greater than the preset packet loss rate.
  • step 340 is performed, and when the packet loss rate is not greater than the preset packet loss rate, step 330 is performed.
  • the marked channel code stream is a normal code stream.
  • the tag channel code stream is the error code stream.
  • step 350 the type of error stream is flagged based on the multicast address of the error stream and the number of ports.
  • the first type of error code stream is caused by some special reasons, such as service network abnormality or improper switch configuration, resulting in the channel code stream being copied into the same two copies during the transmission process.
  • the stream cannot be decoded normally and is an abnormal code stream.
  • the second error code stream is that the multicast address and port number of the code stream are the same as the multicast address and port number of an original channel code stream in a certain period of time, so the error code stream may interfere with the original channel code stream.
  • the error code stream is a repeated code stream.
  • the original stream 1 multicast address is 239.255.1.1
  • the port number is 1234.
  • the stream 2 multicast address also uses 239.255.1.1, and the port number is also 1234. Then code stream 2 will interfere with code stream 1, and code stream 2 is the repeated code stream.
  • the method for marking the type of the error stream can be judged based on the multicast address and the number of ports in the error stream.
  • the method for judging the type of the error stream according to the multicast address and the number of ports in the error stream may include marking the error when the error stream contains multiple identical multicast addresses and ports.
  • the type of the error stream is an abnormal code stream; and when the multicast address and port of the error stream are the same as the multicast address and port of the channel stream received in the preset time, the type of the marked error stream is a repetition code. flow.
  • step 360 the error code stream is filtered according to the type of error code stream.
  • filtering the error code stream according to the type of the error code stream may include: filtering out the error code stream when the type of the error code stream is a repeated code stream; and when the type of the error code stream is an abnormal code stream, The first code stream in the error code stream is reserved, the channel code stream except the first code stream is filtered out, and the first code stream is output as the code stream to be decoded.
  • the first code stream may be any one of the abnormal code streams having a normal multicast address and a port.
  • step 370 the code stream to be decoded is output.
  • the code stream to be decoded outputted in step 370 is a channel code stream that is detected and filtered.
  • the channel code stream is output as a code stream to be decoded; and when the channel code stream is an error code stream, The channel code stream is filtered, and the filtered code stream is used as the code stream to be decoded.
  • step 380 the code stream to be decoded is decoded to obtain audio and video data for playback.
  • the packet loss rate of the channel code stream obtained by detecting the channel code stream uploaded by the channel server and the channel code stream is detected by the channel server; comparing the packet loss rate with the preset packet loss rate, when the packet loss rate is not When the packet loss rate is greater than the preset packet loss rate, the tag channel code stream is a normal code stream. When the packet loss rate is greater than the preset packet loss rate, the tag channel code stream is an error code stream; according to the multicast address of the error code stream and the number of ports, the tag is marked.
  • the type of the error code stream is generated; according to the type of the error code stream, the error code stream is filtered, and the code stream to be decoded is output; the decoded code stream is decoded to obtain the audio and video data for playing, which reduces the direct correlation in the related art.
  • Decoding the received channel code stream may cause a problem of decoding abnormality.
  • FIG. 4 is a structural diagram of an apparatus for streaming a code stream in a fourth embodiment of the present disclosure.
  • the apparatus for streaming a code stream includes a receiving module 401, a filtering module 402, and a decoding module 403.
  • the receiving module 401 is configured to receive the channel code stream uploaded by the channel server and the detection data obtained by the channel server detecting the channel code stream.
  • the filtering module 402 is configured to detect the channel code stream according to the detected data, filter out the error code stream in the channel code stream, and output the code stream to be decoded.
  • the decoding module 403 is configured to decode the code stream to be decoded to obtain audio and video data for playback.
  • the filtering module 402 can include a first marking unit 4021, a second marking unit 4022, and a filtering unit 4023, see FIG.
  • the first marking unit 4021 is arranged to mark the error code stream in the channel code stream.
  • the second marking unit 4022 is arranged to flag the type of the error stream based on the multicast address of the error stream and the number of ports.
  • the filtering unit 4023 is arranged to filter the error code stream according to the type of the error code stream and output the code stream to be decoded.
  • the foregoing apparatus can implement the process implemented by the apparatus in the embodiment of FIG. 1 to FIG. 3, and details are not described herein again to avoid repetition.
  • the channel code stream uploaded by the channel server and the channel server detect the channel code stream are detected; the channel code stream is detected according to the detected data, and the error code stream in the channel code stream is filtered out and output.
  • the code stream to be decoded is decoded; the audio and video data to be played is decoded to obtain the audio and video data for playing, which reduces the problem that the received channel code stream is directly decoded in the related art, and the decoding abnormality may occur.
  • a fifth embodiment of the present disclosure also provides a non-transitory computer readable storage medium storing computer executable instructions arranged to perform the method of any of the above embodiments.
  • the sixth embodiment of the present disclosure further provides a hardware structure diagram of an electronic device.
  • the electron includes:
  • At least one processor 60 which is exemplified by a processor 60 in FIG. 6; and a memory 61, may further include a communication interface 62 and a bus 63.
  • the processor 60, the communication interface 62, and the memory 61 can complete communication with each other through the bus 63.
  • Communication interface 62 can be used for information transfer.
  • the processor 60 can call the logic instructions in the memory 61 to perform the method of code stream playout.
  • logic instructions in the memory 61 described above may be implemented in the form of a software functional unit and sold or used as a stand-alone product, and may be stored in a computer readable storage medium.
  • the memory 61 is used as a computer readable storage medium for storing software programs and computers. Executing a program, such as a program instruction or module corresponding to a method in an embodiment of the present disclosure.
  • the processor 60 performs a function application and data processing by executing a software program, an instruction, or a module stored in the memory 61, that is, a method of implementing code stream playout.
  • the memory 61 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 usage of the terminal device, and the like. Further, the memory 61 may include a high speed random access memory, and may also include a nonvolatile memory.
  • the technical solution of the present disclosure may be embodied in the form of a software product stored in a storage medium, including one or more instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) Performing all or part of the steps of the method of the embodiments of the present disclosure.
  • the foregoing storage medium may be a non-transitory storage medium, including: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division. Actual implementation may be divided according to requirements.
  • multiple units or components may be combined or may be integrated into A system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, multiple units may be integrated together, or may be distributed to multiple networks. On the unit.
  • the functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present disclosure may be embodied in the form of a software product, which is stored in a storage medium, and includes one or more instructions for causing a computer device (which may be an individual) A computer, server, or network device, etc., performs all or part of the steps of the methods described in various embodiments of the present disclosure.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk, and the like, which can store a program code.
  • the method and apparatus for code stream broadcast provided by the present disclosure reduce the problem that the received channel code stream is directly decoded in the related art, and decoding abnormality may occur.

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Abstract

La présente invention concerne un procédé et un appareil de lecture de flux de code. Le procédé de lecture de flux de code consiste : à recevoir des flux de code de canal téléversés par un serveur de canal et des données détectées obtenues par la détection, par le serveur de canal, des flux de code de canal ; à détecter les flux de code de canal selon les données détectées, à filtrer des flux de code d'erreur dans les flux de code de canal, et à délivrer en sortie un flux de code à décoder ; et à décoder le flux de code à décoder, de manière à obtenir des données audio/vidéo pour lecture.
PCT/CN2016/104583 2015-11-04 2016-11-04 Procédé et appareil de lecture de flux de code WO2017076325A1 (fr)

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