WO2010057400A1 - 媒体文件录制错误的修复方法、录制终端、服务器和系统 - Google Patents

媒体文件录制错误的修复方法、录制终端、服务器和系统 Download PDF

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Publication number
WO2010057400A1
WO2010057400A1 PCT/CN2009/074368 CN2009074368W WO2010057400A1 WO 2010057400 A1 WO2010057400 A1 WO 2010057400A1 CN 2009074368 W CN2009074368 W CN 2009074368W WO 2010057400 A1 WO2010057400 A1 WO 2010057400A1
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WO
WIPO (PCT)
Prior art keywords
recording
repair
information
network server
error
Prior art date
Application number
PCT/CN2009/074368
Other languages
English (en)
French (fr)
Inventor
范云松
Original Assignee
深圳华为通信技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳华为通信技术有限公司 filed Critical 深圳华为通信技术有限公司
Priority to EP09827149.7A priority Critical patent/EP2352255B1/en
Priority to ES09827149.7T priority patent/ES2553425T3/es
Priority to BRPI0921069-5A priority patent/BRPI0921069B1/pt
Publication of WO2010057400A1 publication Critical patent/WO2010057400A1/zh
Priority to US13/112,729 priority patent/US8627139B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/76Television signal recording
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing 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
    • H04N21/433Content storage operation, e.g. storage operation in response to a pause request, caching operations
    • H04N21/4334Recording operations
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing 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
    • H04N21/442Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
    • H04N21/44245Monitoring the upstream path of the transmission network, e.g. its availability, bandwidth
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing 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
    • H04N21/442Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
    • H04N21/4425Monitoring of client processing errors or hardware failure
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60Network 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 
    • H04N21/63Control 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
    • H04N21/637Control signals issued by the client directed to the server or network components
    • H04N21/6375Control signals issued by the client directed to the server or network components for requesting retransmission, e.g. of data packets lost or corrupted during transmission from server
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60Network 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 
    • H04N21/65Transmission of management data between client and server
    • H04N21/658Transmission by the client directed to the server
    • H04N21/6581Reference data, e.g. a movie identifier for ordering a movie or a product identifier in a home shopping application

Definitions

  • Embodiments of the present invention relate to network communication technologies, and in particular, to a method for repairing a media file recording error, a recording terminal, a server, and a system. Background technique
  • Video recording can store live TV signals transmitted through cable (Cab le) network, terrestrial transmission network, satellite live network, IP network, etc., on the local storage device or network storage space connected to the terminal for later use.
  • Video recording mainly implements core functions such as receiving, descrambling, secondary encryption, and storage of compressed code streams.
  • various recording error avoidance methods can be adopted, such as: improving network transmission quality, identifying and correcting transmission errors based on a specific algorithm, ensuring transmission quality based on a reliable transmission protocol, and improving the stability of recording terminal operation (mainly Ensure the stability of the storage unit work) or correct the error in the automatic frame skipping mode during playback.
  • circumvention can be used to reduce the recording error of live video, since the transmission link cannot guarantee 100% reliability, recording errors cannot be completely avoided.
  • the prior art for repairing a recording error includes: when a recording error of a live video occurs, searching for an identical program in a subsequent time period in an Electronic Program Guide (EPG), if the same program exists, Automatically trigger a new recording task.
  • EPG Electronic Program Guide
  • the inventors have found that the prior art that repairs the currently recorded error program by recording the same program in the subsequent time period, the repair relies on the same program in different time periods, and thus there is a recording error. Repair technical defects with poor reliability. Summary of the invention
  • Embodiments of the present invention provide a method for repairing a media file recording error, a recording terminal, a server, and a system, which are used to improve the reliability of recording error repair and reduce the use of line bandwidth for recording error repair.
  • the embodiment of the present invention provides a method for repairing a media file recording error, including: when the recording terminal recognizes a recording error in a live recording of a media file, generating description information of the recording error;
  • the description information including the recording error is sent to the network side device through the two-way network between the recording terminal and the network side device. Recording the repair request, and repairing the media files recorded by the network side device according to the repair information sent by the network side device, thereby ensuring the reliability of the media file recording error repair.
  • the embodiment of the present invention further provides a recording terminal, including a recording module, and a generating module, configured to generate description information of the recording error when a recording error is recognized in a live recording of the media file;
  • a repair requesting module configured to send a recording repair request to the network side device, where the recording repair request includes the description information
  • a repairing module configured to: when receiving the repair information sent by the network side device according to the description information, repair the media file recorded by the recording terminal according to the repair information.
  • the repair request module sends the description information including the recording error to the network side device through the two-way network between the recording terminal and the network side device.
  • the repair request is recorded, and the repair module repairs the media file recorded by the repair device according to the repair information sent by the network side device, thereby ensuring the reliability of the media file recording error repair.
  • the embodiment of the invention further provides a network server, including:
  • a network recording module configured to perform live recording of media files
  • a storage module configured to store data recorded by the recording module
  • a recording management module configured to receive a recording repair request, where the recording repair request includes: description information of a recording error recognized by the recording terminal in a live recording of the media file; and acquiring, by the storage module, the recording data that matches the description information, And transmitting the recorded data to the recording terminal.
  • the network server provided by the embodiment of the present invention can receive the recording repair request sent by the recording terminal through the two-way network between the network server and the recording terminal, and send the recording data of the network server matching the request to the recording terminal, so that the recording terminal can Fix the media files recorded by yourself to ensure the reliability of media file recording error repair.
  • An embodiment of the present invention further provides another network server, including:
  • a repair request receiving module configured to receive a recording repair request, where the recording repair request includes description information of a recording error recognized by the recording terminal in a live recording of the media file;
  • a broadcast module configured to broadcast an inquiry request carrying the description information
  • a repair request response module configured to send, when the other recording terminal storing the recorded data that matches the description information sends an inquiry response to the second network server, send the other recording terminal information that sends the inquiry response to the Record the terminal.
  • the network server provided by the embodiment of the present invention can receive the recording repair request sent by the recording terminal through the two-way network between the network server and the recording terminal, and send information of the other recording terminal that stores the recorded data that matches the request to the recording terminal. , so that the recording terminal that sends the recording error repair request can obtain the correct recording data to other recording terminals, and enter the media file recorded by itself. Line repair, thus ensuring the reliability of media file recording error repair.
  • the embodiment of the present invention further provides a repairing system for media file recording errors, including a live system head end, a network side device, and a recording terminal;
  • the recording terminal is configured to: when the recording error is detected in the live recording of the media file at the head end of the live broadcast system, generate the description information of the recording error; send a recording repair request to the network side device, where the recording repair request includes The description information is: when the repair information sent by the network side device according to the description information is received, the media file recorded by the recording terminal is repaired according to the repair information;
  • the network side device is configured to send, to the recording terminal, repair information that matches the description information when receiving the recording repair request.
  • the repairing system for the media file recording error provided by the embodiment of the present invention sends a recording error to the network side device through the two-way network between the recording terminal and the network side device when a recording error occurs during the recording of the media file at the head end of the live broadcast system.
  • the recording repair request of the description information of the error is recorded, and the media file recorded by the network side device is repaired according to the repair information sent by the network side device, thereby ensuring the reliability of the media file recording error repair.
  • FIG. 1 is a flowchart of a first embodiment of a method for repairing a media file recording error according to the present invention
  • FIG. 2 is a flowchart of a second embodiment of a method for repairing a media file recording error according to the present invention
  • FIG. 4 is a flowchart of a fourth embodiment of a method for repairing a media file recording error according to the present invention
  • FIG. 6 is a schematic structural diagram of an embodiment of a network server according to the present invention.
  • FIG. 7 is a schematic structural diagram of another embodiment of a network server according to the present invention.
  • FIG. 8 is a schematic structural diagram of a first embodiment of a system for repairing a media file recording error according to the present invention
  • FIG. 9 is a schematic structural diagram of a second embodiment of a media file recording error repairing system according to the present invention
  • FIG. 11 is a schematic structural diagram of a fourth embodiment of a repairing system for media file recording errors according to the present invention.
  • the live recording is performed by the recording terminal or the network side device to record the media file played by the head end of the live broadcast system through the live broadcast network; the recording error is due to the network transmission or the recording terminal itself working fault, etc. The reason is that the data recorded by the recording terminal does not match the original data at the head end of the live broadcast system.
  • FIG. 1 is a flowchart of a first embodiment of a method for repairing a media file recording error according to the present invention. As shown in Figure 1, this embodiment includes:
  • Step 101 When the recording terminal recognizes a recording error in the live recording of the media file, the description information of the recording error is generated.
  • Step 103 Send a recording repair request to the network side device, where the recording repair request includes description information of the recording error generated in step 101.
  • Step 105 When receiving the repair information sent by the network side device according to the description information of the recording error, repair the media file recorded by the recording terminal according to the repair information.
  • the recording repair request including the description information of the recording error is sent to the network side device through the two-way network between the recording terminal and the network side device, and is sent according to the network side device.
  • the repair information repairs the media files recorded by itself, thereby ensuring the reliability of media file recording error repair.
  • the method to improve the quality of network transmission The key to this method is to improve the quality of the physical link.
  • the main factors affecting the quality of the physical link include transmission loss, transmission interference, multipath effect, etc. Generally, link negotiation, line shielding, etc. are adopted. Means to solve; However, in satellite and terrestrial live TV transmission networks, because the transmission medium is air, it is more susceptible to external interference, and its network transmission is not only impossible to transmit without error, but also may cause signals due to strong signal interference. The situation is greatly reduced in quality.
  • Handling method for network transmission error correction This method identifies and corrects link transmission errors by introducing redundant information, such as error correction codes, such as linear block codes, cyclic codes, convolutional codes, etc.; but mathematical methods The introduction cannot completely eliminate network transmission errors, such as satellite and terrestrial transmissions, which may result in the failure to receive data fragments due to continuous interference.
  • redundant information such as error correction codes, such as linear block codes, cyclic codes, convolutional codes, etc.
  • the recording terminal itself is a mechanical electronic device.
  • the problem of stability caused by vibration interference, electromagnetic interference, and network impact cannot be completely eliminated.
  • structural seismic design and hardware electromagnetic compatibility design can be adopted. Wait for the external interference to be as low as possible, but it is always impossible to eliminate interference 100%.
  • Reliable transmission protocol is an error recovery scheme based on two-way communication mechanism.
  • the general application is based on the solution of providing live broadcast service based on two-way communication network, for example, live broadcast over TCP based on IP network; reliable transmission protocol
  • the error retransmission packet may be required to be retransmitted.
  • error avoidance is limited, and generally can only be limited to the time range of the terminal side live buffer.
  • the method for avoiding error correction in recording terminal playback The application of error correction technology is very common. The main idea is to skip frames. The method of frame skipping can not affect the normal playback of recorded files. The user experience is improved to some extent by playing error correction. , but it does not essentially repair the data.
  • the above-mentioned circumvention method can reduce the recording errors occurring in the live recording of the media file, the recording error is inevitable, so it is necessary to repair the recording errors occurring during the live recording.
  • the recording error of the prior art on the recording terminal is a single broadcast through the media file. To the network, that is, the head end of the live broadcast system can send downlink data to the recording terminal, but the recording terminal cannot send uplink data to the head end of the live broadcast system.
  • the embodiment of the present invention supports the recording terminal and the network side device of the live broadcast system, and the two-way network capable of interactive communication through the recording terminal and the network side device, Or recording a recording error caused by the actual recording of the terminal, the recording terminal may send a recording repair request including the recording error description information to the network side device, and repair the media file recorded by the recording terminal according to the repair information sent by the network side device, Thereby ensuring the reliability of media file recording error repair.
  • FIG. 2 is a flow chart of a second embodiment of a method for repairing a media file recording error according to the present invention.
  • the architecture of the bidirectional network where the recording terminal and the network side device are located is a client/server (C/S) network architecture, where the network side device is the first embodiment of the present invention.
  • the network server; the first network server and the recording terminal both support the webcast recording service. As shown in FIG. 2, this embodiment includes:
  • Step 201 The recording terminal records the media file broadcasted by the head end of the live broadcast system through the live broadcast network, and identifies whether the recorded media file has a recording error.
  • the way to identify recording errors can include:
  • the recording terminal receives the live media file from the head end of the live recording system through the live broadcast network.
  • the recording terminal recognizes the packet loss, out of order, wrong package, etc. during the data receiving process, If the lost frame or bad frame is caused, the recording terminal recognizes that a recording error has occurred.
  • the recording error caused by the network transmission or recording terminal failure during recording of the media file cannot be recognized and recorded in real time, the recording error can be recognized when the recording terminal decodes the recorded media file.
  • the recording terminal finds that the recorded media file cannot be correctly decoded, the recording terminal recognizes that a recording error has occurred;
  • recording errors can also be made by manual identification. If the recording terminal receives the media file, the recording error is not recognized in real time, and no abnormality is found in the decoded media file, but When a local area flower screen or mosaic phenomenon occurs during the playback of a recorded media file, the recording error that occurs may be recognized by manual recognition.
  • Step 203 When a recording error is recognized, information related to the recording error is recorded, and a description information of the recording error is generated.
  • the recording terminal When a recording error is recognized, different descriptions of recording errors may be generated according to different types of recording errors; the description information of the generated recording errors includes type information of recording errors. For example: When the media file broadcasted on the head end of the live broadcast system is transmitted in the video frame mode, the recording terminal records the recording error by:
  • the type value of the recording error can be set to 1, and the frame loss related information needs to be recorded, including the correct video adjacent to the lost video frame.
  • the identification information and the time information of the frame correspondingly, the description information of the generated error type may include: a type of the recording error (type value is 1), identification information and time information of the correct video frame adjacent to the lost video frame.
  • the identification information of the correct video frame adjacent to the lost video frame may include the start of the correct video frame adjacent to the lost video frame.
  • a code prefix which may be a start code prefix ( s tar t -code-pref ix ) parameter defined by a Network Abs tract Layer (NAL) in the H.264 video coding standard;
  • NAL Network Abs tract Layer
  • the media file is in a packet-oriented transmission format in the network, and the identification information of the correct video frame adjacent to the lost video frame may include a transmission protocol. I and part of the video frame; and the time information may include a Decoding Time Stamp (DTS) or a calendar time.
  • DTS Decoding Time Stamp
  • the type value of the recording error can be set to 2, and the bad frame related information, including the identifier of the damaged video frame, needs to be recorded.
  • the description information of the generated error type may include: a type of recording error (type value is 2), identification information and time information of a correct video frame adjacent to the lost video frame.
  • the type value of the recording error is set to another class.
  • Type you can set the type value of this recording error to 3.
  • the preset reaction time length is required to be added before and after the recording start and end point.
  • the reaction duration is 300 milliseconds.
  • Step 205 The recording terminal sends a recording repair request to the first network server, where the repair recording repair request includes description information of the recording error.
  • Step 207 The first network server receives the recording repair request, parses the recording repair request, searches for the recording data that matches the recording error description information in the media file recorded by the first network server, and sends the recorded data as the repair information to the recording terminal. .
  • Step 209 The recording terminal repairs the media file recorded by the recording terminal according to the recorded data sent by the first network server.
  • the method of initiating the recording error of the media file recorded by itself is very flexible, for example: the recording terminal can automatically start when receiving the repair information from the first network server.
  • the error repair process is recorded; or the repair process of the recording error is automatically started when the preset condition is met; or the repair process of the recording error is initiated when an external trigger (such as a user manual start, etc.).
  • the recording terminal can correct and repair the recorded content based on the delayed transmission of the program, and delay the transmission of the same program through another channel.
  • the inventor finds that for a live channel program, the existing technology transmitted through another channel after delay, in the process of recording error repair, the media file recorded by the recording terminal needs to be performed as a whole. Replacement, therefore, it takes a long time to occupy one channel, and the line bandwidth utilization is low.
  • the recording terminal when the recording terminal initiates the recording error repair in the embodiment of the present invention, it may be different according to the recorded data sent by the first network server.
  • the type of recording error corresponding to the specific data fragment in the recorded media file where the recording error occurred; for example: When the type of the recording error is frame loss, the recording terminal will repair the letter from the first network server when the type of the recording error is a bad frame, and the recording terminal replaces the media file recorded by the recording terminal with the repair information from the first network server. Corrupting the corresponding data of the video frame;
  • the recording terminal replaces the corresponding data to be repaired in the media file recorded by the recording terminal with the repair information from the first web server.
  • Step 211 After the recording terminal completes the repair processing of the media file recorded by itself, the recording test is performed on the repaired segment.
  • the recording terminal can automatically start the decoding test of the repaired segment in the idle state, for example: When the user does not use the recording terminal, the recording terminal can automatically start the decoding test of the repaired segment. , the video is not output during the decoding test.
  • the recording terminal ends the recording error repair process; if the repaired segment fails the decoding test, the recording terminal regenerates the description of the recording error and resends the recording repair request to the first network server. Steps 207-211 are repeated until the recording error repair is completed. Therefore, the decoding test by the repair segment can further ensure that the repaired data can be decoded normally, and the accuracy and reliability of the recording repair are guaranteed.
  • the recording terminal that supports the live recording service communicates with the first network server to realize the recording error correction in the media file recorded by the recording terminal, and ensures the reliable recovery of the media file recording error.
  • the description information of the recording error generated by the recording terminal includes the detailed information of the recording error, which is beneficial for the first network server to accurately obtain the matching repair information according to the description information, thereby facilitating the accuracy of the recording terminal to perform the recording error repairing;
  • the recording terminal can perform the repair processing of the recording error according to actual needs, and the method is flexible.
  • the recording terminal can record a recording error in the media file recorded by the recording terminal according to the obtained repair information.
  • the specific data segment is subjected to repair processing such as insertion or replacement. Therefore, it is not necessary to replace the media file recorded by the recording terminal as a whole, which can reduce the use of the line bandwidth by the media file recording error repair, thereby facilitating the improvement of the line bandwidth. The usage rate is further improved.
  • the repairing segment detects the repaired segment until the repaired segment ends the recording error repair process, thereby improving the reliability and accuracy of the recording error repair.
  • FIG. 3 is a flowchart of a third embodiment of a method for repairing a media file recording error according to the present invention.
  • the network side device includes a point-to-point (P2P) node server and other recording terminals that are in communication with the P2P node server, where the P2P node server is the second network server in the embodiment of the present invention;
  • the network architecture on which the recording terminal and other recording terminals are based is a P2P network architecture. As shown in FIG. 3, this embodiment includes:
  • Step 301 The recording terminal records the media file broadcasted by the head end of the live broadcast system through the live broadcast network, and identifies whether the recorded media file has a recording error.
  • Step 303 When a recording error is recognized, the recording terminal generates a description information of the recording error.
  • a recording error is recognized, different descriptions of recording errors may be generated according to different types of recording errors; the description information of the generated recording errors includes type information of recording errors. For example: When the media file broadcasted at the head end of the live broadcast system is transmitted in the data fragmentation mode, the recording terminal records the recording error including:
  • the type value of the recording error can be set to 4.
  • the information about the lost frame in the fragment including: the data fragmentation information of the lost video frame, the identification information and the time information of the correct video frame adjacent to the lost video frame, and correspondingly, the generated error type
  • the description information may include: a type of recording error (type value is 4), data fragmentation information in which the lost video frame is located, identification information and time information of the correct video frame adjacent to the lost video frame.
  • the identification information of the correct video frame adjacent to the lost video frame may include the start of the correct video frame adjacent to the lost video frame.
  • Code prefix which can be the network abstraction layer in the H.264 video coding standard ( Ne twork Abs t rac t Layer, NAL for short) defined start code prefix ( s tar t _code_ pref ix ) parameter; if the live media file is in the network through a packet-oriented transmission format, with the lost video frame
  • the identification information of the adjacent correct video frame may include a transmission protocol and a partial byte of the video frame; and the time information may include DTS or calendar time, and the like.
  • the description information of the generated error type may include: a type of recording error (type value is 5), and correct data fragmentation information adjacent to the lost data fragment.
  • the recording error includes both the loss of part of the data fragment and the incomplete data fragmentation information is incomplete, the data fragment with incomplete information may be processed in the manner of missing data fragmentation, and the recording error type is regarded as Bad type error type (type value is 5).
  • the type value of the recording error can be set to 6, and the fragmentation needs to be recorded.
  • the inner bad frame related information includes data fragmentation information in which the damaged video frame is located, identification information and time information of the correct video frame adjacent to the damaged video frame.
  • the description information of the generated error type may include: a type of recording error (type value is 6), data fragmentation information in which the video frame is damaged, identification information and time information of the correct video frame adjacent to the damaged video frame.
  • the type value of the recording error can be set to 7, and the bad piece related information, including the corrupted data fragmentation information, needs to be recorded. Identification information and time information of the correct data fragment adjacent to the damaged data fragment. .
  • the description information of the generated error type may include: the type of the recording error (type value is 7), the corrupted data fragmentation information, the identification information and the time information of the correct data fragment adjacent to the corrupted data fragment.
  • the type value of the recording error is set to other types, and the type value of the recording error can be set to 3, at which time the start and end point of the local area flower screen or mosaic phenomenon is recorded. Duration information. Due to the manual recognition of the recording error, considering the reaction error of the manual identification, the preset reaction time is required before and after the start and end of the recording time. The response time is 300 milliseconds.
  • Step 305 The recording terminal sends a recording repair request to the P2P node server (the second network server), where the recording repair request includes description information of the recording error.
  • Step 307 The P2P node server (the second network server) parses the received recording repair request, and broadcasts an inquiry request carrying the description information of the recording error to the other recording terminal.
  • Step 309 The other recording terminal storing the recorded data matching the description information of the recording error sends an inquiry response to the P2P node server (the second network server).
  • Step 31 The P2P node server (second network server) sends the other recording terminal information that sends the inquiry response to the recording terminal that issues the recording repair request.
  • Step 31 The recording terminal acquires, according to other recording terminal information sent by the second network server, the recording data that matches the description information of the recording error to the other recording terminal, and the recorded data is used as the repairing information for the recording terminal to perform the recording error repair.
  • Step 315 The recording terminal repairs the media file recorded by itself.
  • the recording error of the media file that is recorded by itself is very flexible, for example: the recording terminal can automatically start the repair process of the recording error when receiving the repair information; or The repair process of the recording error is automatically started when the preset condition is met; or the repair process of the recording error is started when an external trigger (for example, the user manually starts).
  • the recording terminal initiates a recording error repair the recording error of the recorded media file may be repaired according to the type of different recording errors according to the recording data of other recording terminals. The type of the recording error is framed or lost in the fragment.
  • the recording terminal inserts the repair information from other recording terminals into the recording.
  • the recording terminal uses the repair information from other recording terminals.
  • the recording terminal replaces the corresponding data to be repaired in the media file recorded by the recording terminal with the repair information from the first network server.
  • Step 317 After the recording terminal finishes repairing the media file recorded by itself, the recording terminal performs decoding test on the repaired segment.
  • the recording terminal can automatically start the decoding test of the repaired segment in the idle state, for example: When the user does not use the recording terminal, the recording terminal can automatically start the decoding test of the repaired segment. , the video is not output during the decoding test.
  • the recording terminal ends the recording error repair process; if the repaired segment fails the decoding test, the recording terminal regenerates the description of the recording error and resends the recording repair request to the second network server. Repeat steps 307-317 until the recording error repair is complete. Therefore, the decoding test by the repair segment can further ensure that the repaired data can be decoded normally, and the accuracy and reliability of the recording repair are guaranteed.
  • the recording terminal performs the live recording of the media file through the live broadcast network, and can also record the media file recorded by the recording terminal through the two-way network that supports the recording terminal of the live recording service and other recording terminals based on the P2P communication technology.
  • the error is fixed to ensure the reliability of the media file recording error repair.
  • the description information of the recording error generated by the recording terminal includes the detailed information of the recording error, which is beneficial for other recording terminals to accurately obtain the matching repair information according to the description information, thereby facilitating the error correction. Improve the accuracy of the recording terminal for recording error repair;
  • the recording terminal can perform the recording error repair processing according to the actual needs, and the method is flexible, which is beneficial to reduce the media file recording error and repair the line bandwidth. Further, after the recording terminal repairs the recording error in this embodiment, the repairing segment is detected, until the repairing segment ends the recording error repair process by the detecting party, thereby improving the recording error. Repair of reliability and accuracy.
  • FIG. 4 is a flowchart of a fourth embodiment of a method for repairing a media file recording error according to the present invention.
  • the bidirectional network architecture to which the recording terminal is communicatively connected includes a C/S network architecture.
  • the P2P network architecture; the server supporting the live recording service in the C/S network architecture is the first network server; the P2P node server in the P2P network is the second network server in the embodiment of the present invention, and the P2P network may include multiple other recordings.
  • Terminal As shown in FIG. 4, this embodiment includes:
  • Step 401 The recording terminal records the media file broadcasted by the head end of the live broadcast system through the live broadcast network, and identifies whether the recorded media file has a recording error.
  • Step 403 When a recording error is recognized, the recording terminal generates a description information of the recording error.
  • Step 405 The recording terminal sends a recording repair request to the first network server and the P2P node server (the second network server), where the recording repair request includes description information of the recording error.
  • the recording terminal may separately send a recording repair request to the first network server and the P2P node server (the second network server); or, the recording terminal may separately send the recording repair to the first network server and the P2P node server (the second network server) request.
  • the recording terminal In the case of sending a recording repair request in succession, if the recording terminal first sends a recording repair request to a network server, when the recording terminal receives the correct response from the network server, it may abandon sending a recording repair request to another network server; otherwise, Another web server sends a recording repair request.
  • the recording terminal may send the recording repair cancellation to another network server. request.
  • the recording error is repaired by recording the heterogeneous two-way network associated with the terminal.
  • the recording terminal fails to obtain the repair information in the interactive communication with a network server
  • the network server can obtain the repair recording error.
  • the recording information helps to improve the reliability of recording error repair.
  • FIG. 5 is a schematic structural diagram of an embodiment of a recording terminal according to the present invention.
  • the recording terminal of this embodiment includes a recording module 51, a generating module 52, a repair requesting module 53 and a repairing module 54.
  • the recording module 51 is configured to record a media file played by the head end of the live broadcast system through the live broadcast network.
  • the generating module 52 is configured to generate a recording when a recording error is recognized in the live recording of the media file. Wrong description.
  • the repair request module 53 is configured to send a record repair request to the network side device, where the record repair request includes description information of the recording error generated by the generating module 52.
  • the repairing module 54 is configured to repair the media file recorded by the recording module 51 according to the repair information when receiving the repair information sent by the network side device according to the description information.
  • the repairing module 54 may further include: a receiving unit 541, an inserting unit 542, and a replacing unit 543.
  • the receiving unit 541 is configured to receive the repair information sent by the network side device according to the description information of the recording error.
  • the inserting unit 542 is configured to insert the repair information into the replacing unit 543 when the type of the recording error is frame dropping or losing, and replace the information with the repair information when the type of the recording error is a bad frame or a bad piece.
  • the repair request module 53 may further include: a first repair request unit 531 and a second repair request unit 532.
  • the first repair request unit 531 is configured to send a recording repair request to the first network server.
  • the second repair request unit 532 is configured to send a recording repair request to the second network server.
  • the repair request module 53 supports the function of transmitting the record repair request to the first network server and the second network server in turn, and also supports the function of simultaneously transmitting the record repair request to the first network server and the second network server.
  • the recording terminal may further include: a timing module 55.
  • the timing module 55 is configured to activate the first repair request unit 531 to send a recording repair request to the first network server and start a timer, and the repair module 54 activates the second when the correct response of the first network server is not received within a preset time. Repair request unit 532 sends a recording fix to the second web server Request
  • the timing module 55 is configured to activate the second repair request unit 532 to send a recording repair request to the second network server and start a timer, and the repair module 54 activates when the correct response of the second network server is not received within a preset time.
  • the first repair request unit 531 sends a recording repair request to the first web server.
  • the recording terminal may further include: a repair request revocation module 56.
  • the repair request revocation module 56 is configured to send a recording repair request to the second network server when the repair module 54 receives the first web server response; or, when the repair module 54 receives the second web server response, The first web server sends a recording repair request.
  • the repair request module sends a record repair request including the description information of the recording error to the network side device through the two-way network between the recording terminal and the network side device, and the repair module compares the repair information sent by the network side device to the network side device.
  • the recorded media file is repaired to ensure the reliability of the media file recording error repair.
  • the recording error is fixed based on the bidirectional channel of the two-way network in this embodiment, the use of the line bandwidth can be reduced by the media file recording error repair.
  • FIG. 6 is a schematic structural diagram of an embodiment of a network server according to the present invention.
  • the network server of this embodiment includes: a network recording module 61, a storage module 62, and a recording management module 63.
  • the network recording module 61 is used for performing live recording of media files.
  • the storage module 62 is configured to store data recorded by the recording module.
  • the recording management module 63 is configured to receive a recording repair request, where the recording repair request includes: description information of a recording error recognized by the recording terminal in a live recording of the media file; and acquiring, by the storage module, the recording data that matches the description information, And transmitting the recorded data to the recording terminal.
  • the network server can receive the recording repair request sent by the recording terminal through the two-way network between the network server and the recording terminal, and send the recording data of the network server matching the request to the recording terminal, so that the recording terminal can record the self.
  • Media files are repaired to protect The reliability of the media file recording error repair.
  • the repair module of the embodiment may perform the process of inserting or replacing the specific data segment in which the recording error occurs in the media file recorded by the recording terminal according to the received repair information, thereby reducing the media file recording error and repairing the line bandwidth. The use of it is beneficial to improve the utilization of line bandwidth.
  • FIG. 7 is a schematic structural diagram of another embodiment of a network server according to the present invention.
  • the network server of this embodiment includes: a repair request receiving module 71, a broadcast module 72, and a repair request response module 73.
  • the repair request receiving module 71 is configured to receive a recording repair request, which includes description information of a recording error recognized by the recording terminal in the live recording of the media file.
  • the broadcast module 72 is for broadcasting an inquiry request carrying the description information.
  • the repair request response module 73 is configured to send another recording terminal information that sends the inquiry response to the recording terminal when receiving the inquiry response by the other recording terminal storing the recording data matching the description information.
  • the network server can receive the recording repair request sent by the recording terminal through the two-way network between the network server and the recording terminal, and send information of other recording terminals storing the recorded data matching the request to the recording terminal, so that the sending is performed.
  • the recording terminal that records the error repair request can obtain the correct recording data from other recording terminals, and repair the media files recorded by itself, thereby ensuring the reliability of the media file recording error repair.
  • FIG. 8 is a schematic structural diagram of a first embodiment of a system for repairing a media file recording error according to the present invention.
  • the repair system for recording media file errors in this embodiment includes: a live system head end 81, a recording terminal 82, and a network side device 83; a live system head end 81 via a one-way communication network (eg, a live broadcast network, etc.)
  • the recording terminal 82 and the network side device 83 are separately connected to the recording terminal 82 and the network side device 83 via a two-way communication network.
  • the live system head end 81 is used to broadcast media files through a one-way communication network.
  • the recording terminal 82 is configured to generate the description information of the recording error when the recording error is recognized in the live recording of the media file of the live system head 81; send the recording repair to the network side device 83 Re-requesting, the recording repair request includes description information of the recording error; when receiving the repair information sent by the network-side device 8.3 according to the description information, performing the media file recorded by the recording terminal according to the repair information repair.
  • the network side device 83 is configured to send the repair information matching the recording error description information to the recording terminal 82 upon receiving the recording repair request sent by the recording terminal 82.
  • the recording device when a recording error occurs during the recording of the media file at the head end of the live broadcast system, the recording device sends a description including the recording error to the network side device through the two-way network between the recording terminal and the network side device.
  • the information is recorded and repaired, and the media files recorded by the network side device are repaired according to the repair information sent by the network side device, thereby ensuring the reliability of the media file recording error repair.
  • FIG. 9 is a schematic structural diagram of a second embodiment of a system for repairing a media file recording error according to the present invention.
  • the network side device includes a first network server 831; the repair information sent by the network side device to the recording terminal includes the first network server. 831 Recorded recording data that matches the description of the recording error.
  • the first network server 831 includes: a network recording module 8311, a storage module 8 312, and a recording management module 8 31 3.
  • the network recording module 831 1 is used to record the media files of the live end 81 of the live broadcast system.
  • the storage module 8312 is used to store data recorded by the network recording module 831 1.
  • the recording management module 831 3 is configured to receive a recording repair request sent by the recording terminal 82, where the recording repair request includes description information of a recording error recognized by the recording terminal 82 in the live recording of the media file; and the description information is obtained from the storage module 8312. The recorded data is matched, and the recorded data is transmitted to the recording terminal 82.
  • FIG. 10 is a schematic structural diagram of a third embodiment of a system for repairing a media file recording error according to the present invention.
  • the network side device includes a second network server 832 and other recording terminals 833; and the network side device sends repair information to the recording terminal. Including: Recording data recorded by other recording terminal 833 that matches the description information.
  • the second network server 832 includes: a repair request receiving module 8321, a broadcast module 8322, and a repair request response module 8323.
  • the repair request receiving module 8321 is configured to receive a recording repair request, which includes description information of the recording error recognized by the recording terminal 82 in the live recording of the media file.
  • the broadcast module 8322 is for broadcasting an inquiry request carrying the description information.
  • the repair request response module 8323 is configured to transmit, to the recording terminal 82, other recording terminal information that transmits the inquiry response when the other recording terminal 833 that has received the recording data matching the description information receives the inquiry response to the second network server 832.
  • the other recording terminal 833 is configured to determine, according to the description information carried in the inquiry request, whether the storage data matching the description information is stored, when the other recording terminal 833 itself stores the same When the recorded data matching the information is described, an inquiry response is sent to the second web server 832.
  • the recording repair request may be sent to the second network server through a two-way network (P2P network architecture) that supports the recording terminal of the live recording service, the second network server, and other recording terminals, And acquiring, according to the other recording terminal information that is recorded by the second network server and storing the recording data that matches the recording error description information, acquiring the repair information to the corresponding other recording terminal, thereby realizing the repairing of the recording error in the media file recorded by the recording terminal, thereby Guarantee the reliability of media file recording error repair
  • FIG. 11 is a schematic structural diagram of a fourth embodiment of a system for repairing a media file recording error according to the present invention.
  • the network side device may include a first network server 831 in a first two-way network architecture (such as a C/S network architecture), and a second two-way network.
  • the recording terminal 82 is further configured to separately send a recording repair request to the first web server 831 and the second web server 832, respectively.
  • the recording terminal 82 may respectively send a recording repair request to the first network server 831 and the second network server 832; or, the recording terminal 82 may simultaneously send a recording repair request to the first network server 831 and the second network server 832, respectively.
  • the recording terminal 82 may abandon sending a recording repair request to another network server; otherwise, Send a recording fix request to another web server.
  • the recording terminal 82 For the case where the recording terminal 82 simultaneously sends a recording repair request to the first network server 831 and the second network server 832, if the recording terminal 82 receives any of the network servers to return to the correct response, the recording terminal can go to another network server. Send a recording fix and a charge request.
  • the implementation of the recording error repair is implemented based on the first two-way network in which the recording terminal 82 communicates with the first network server 831.
  • the description of the refinement function module of the second network server 832 refer to the description of FIG. 10, and the second bidirectional network based on the communication between the recording terminal 82, the second web server 832 and the other recording terminal 833 is implemented.
  • the implementation of the recording error repair refer to the description of the corresponding embodiment in FIG. 3, and details are not described herein again.
  • the recording error is repaired by recording the heterogeneous two-way network associated with the terminal.
  • the recording terminal fails to obtain the repair information in the interactive communication with a network server
  • the network server can obtain the repair recording error.
  • the recording information helps to improve the reliability of recording error repair.
  • modules in the device in the embodiment can be implemented according to the implementation.
  • the description is distributed among the devices of the embodiment, and the corresponding changes may also be made in one or more devices different from the embodiment.
  • the modules of the above embodiments may be combined into one module, or may be further split into multiple sub-modules.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Databases & Information Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Television Signal Processing For Recording (AREA)

Description

媒体文件录制错误的修复方法、 录制终端、 服务器和系统 本申请要求于 2008年 11月 12 日提交中国专利局、 申请号为 200810226 739. 9、 发明名称为 "媒体文件录制错误的修复方法、 录制终端、 服务器和系 统" 的中国专利申请的优先权, 其全部内容通过引用结合在本申请中。 技术领域
本发明实施例涉及网络通信技术, 特别是涉及一种媒体文件录制错误的 修复方法、 录制终端、 服务器和系统。 背景技术
在网络电视的研究和标准化进程中, 网络电视中的视频录制 (Video Re cording ) 业务受到高度重视。 视频录制可将通过线缆(Cab le ) 网络、 地面 传输网络、 卫星直播网络、 IP网络等传输的直播电视信号, 在终端所连接的 本地存储设备或网络存储空间上进行存储, 以备后用。 视频录制主要实现了 对压缩码流的接收、 解扰、 二次加密、 存储等核心功能。 为降低录制错误, 可采取多种录制错误规避方法, 例如: 提升网络传输质量、 基于特定算法对 传输错误进行识别和纠正、 基于可靠传输协议保障传输质量、 提升录制终端 工作的稳定性(主要是确保存储单元工作的稳定性)或在播放过程中以自动 跳帧方式纠错等。 虽然可采取规避手段降低直播视频的录制错误, 但由于传 输链路不可能保证 100 %的可靠, 因此, 录制错误是无法完全避免的。
当直播视频的录制错误发生时, 通常需要对发生录制错误的直播视频进 行修复。 修复录制错误的现有技术包括: 当出现直播视频的录制错误时, 在 电子节目指南 (Elec tronic Program Guide, 简称 EPG ) 中搜索后续时间段 是否还存在同样的节目, 如果存在同样的节目, 则自动触发新的录制任务。 发明人在实现本发明实施例过程中发现, 通过录制后续时间段同样的节 目对当前录制出现错误的节目进行修复的现有技术, 修复依赖于不同时间段 存在同样的节目, 因此存在着录制错误修复可靠性较差的技术缺陷。 发明内容
本发明实施例提供一种媒体文件录制错误的修复方法、 录制终端、 服务 器和系统, 用以提高录制错误修复的可靠性同时, 降低录制错误修复对线路 带宽的使用。
本发明实施例提供了一种媒体文件录制错误的修复方法, 包括: 当录制终端在媒体文件的直播录制中识别到录制错误时, 生成所述录制 错误的描述信息;
向网络侧设备发送录制修复请求,所述录制修复请求包括所述描述信息; 在接收到所述网络侧设备根据所述描述信息发送的修复信息时, 根据所 述修复信息对所述录制终端录制的媒体文件进行修复。
本发明实施例提供的媒体文件录制错误的修复方法中, 当录制终端出现 媒体文件的录制错误时, 通过录制终端与网络侧设备之间的双向网络, 向网 络侧设备发送包括录制错误的描述信息的录制修复请求, 并根据网络侧设备 发送的修复信息对自身录制的媒体文件进行修复, 从而保证媒体文件录制错 误修复的可靠性。
本发明实施例还提供了一种录制终端, 包括录制模块, 还包括: 生成模块, 用于在媒体文件的直播录制中识别到录制错误时, 生成所述 录制错误的描述信息;
修复请求模块, 用于向网络侧设备发送录制修复请求, 所述录制修复请 求包括所述描述信息;
修复模块, 用于在接收到所述网络侧设备根据所述描述信息发送的修复 信息时, 根据所述修复信息对所述录制终端录制的媒体文件进行修复。 本发明实施例提供的录制终端在媒体文件的直播录制中识别到录制错误 时, 通过录制终端与网络侧设备之间的双向网络, 由修复请求模块向网络侧 设备发送包括录制错误的描述信息的录制修复请求, 并由修复模块根据网络 侧设备发送的修复信息对自身录制的媒体文件进行修复, 从而保证媒体文件 录制错误修复的可靠性。
本发明实施例还提供了一种网络服务器, 包括:
网络录制模块, 用于进行媒体文件的直播录制;
存储模块, 用于存储所述录制模块录制的数据;
录制管理模块, 用于接收录制修复请求, 所述录制修复请求包括录制终 端在媒体文件的直播录制中识别的录制错误的描述信息; 向所述存储模块获 取与所述描述信息匹配的录制数据,并将所述录制数据发送给所述录制终端。
本发明实施例提供的网络服务器可通过网络服务器与录制终端之间的双 向网络, 接收录制终端发送的录制修复请求, 并向录制终端发送与该请求匹 配的网络服务器的录制数据, 使得录制终端可对自身录制的媒体文件进行修 复, 从而保证媒体文件录制错误修复的可靠性。
本发明实施例还提供了另一种网络服务器, 包括:
修复请求接收模块, 用于接收录制修复请求, 所述录制修复请求包括录 制终端在媒体文件的直播录制中识别的录制错误的描述信息;
广播模块, 用于广播携带有所述描述信息的询问请求;
修复请求响应模块, 用于在接收到存储有与所述描述信息匹配的录制数 据的其他录制终端向所述第二网络服务器发送询问响应时, 将发送询问响应 的其他录制终端信息发送给所述录制终端。
本发明实施例提供的网络服务器可通过网络服务器与录制终端之间的双 向网络, 接收录制终端发送的录制修复请求, 并向录制终端发送存储有与该 请求匹配的录制数据的其他录制终端的信息, 使得发送录制错误修复请求的 录制终端可向其他录制终端获取正确的录制数据, 对自身录制的媒体文件进 行修复, 从而保证媒体文件录制错误修复的可靠性。
本发明实施例还提供了一种媒体文件录制错误的修复系统, 包括直播系 统头端、 网络侧设备和录制终端;
所述录制终端用于在对所述直播系统头端的媒体文件进行直播录制中识 别到录制错误时, 生成所述录制错误的描述信息; 向网络侧设备发送录制修 复请求, 所述录制修复请求包括所述描述信息; 在接收到所述网络侧设备根 据所述描述信息发送的修复信息时, 根据所述修复信息对所述录制终端录制 的媒体文件进行修复;
所述网络侧设备用于在接收到所述录制修复请求时, 向所述录制终端发 送与所述描述信息匹配的修复信息。
本发明实施例提供的媒体文件录制错误的修复系统, 当录制终端录制直 播系统头端的媒体文件过程中发生录制错误时, 通过录制终端与网络侧设备 之间的双向网络, 向网络侧设备发送包括录制错误的描述信息的录制修复请 求, 并根据网络侧设备发送的修复信息对自身录制的媒体文件进行修复, 从 而保证媒体文件录制错误修复的可靠性。 附图说明
为了更清楚地说明本发明实施例的技术方案, 下面将对实施例描述中所 需要使用的附图作简单地介绍, 显而易见地, 下面描述中的附图仅仅是本发 明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造性劳动的前 提下, 还可以根据这些附图获得其他的附图。
图 1为本发明媒体文件录制错误的修复方法第一实施例流程图; 图 2为本发明媒体文件录制错误的修复方法第二实施例流程图; 图 3为本发明媒体文件录制错误的修复方法第三实施例流程图; 图 4为本发明媒体文件录制错误的修复方法第四实施例流程图; 图 5为本发明录制终端实施例结构示意图; 图 6为本发明网络服务器实施例结构示意图;
图 7为本发明另一网络服务器实施例结构示意图;
图 8为本发明媒体文件录制错误的修复系统第一实施例结构示意图; 图 9为本发明媒体文件录制错误的修复系统第二实施例结构示意图; 图 10为本发明媒体文件录制错误的修复系统第三实施例结构示意图; 图 11为本发明媒体文件录制错误的修复系统第四实施例结构示意图。 具体实施方式
下面通过附图和实施例, 对本发明的技术方案做进一步的详细描述。 本发明下列各详述实施例中, 直播录制即为录制终端或网络侧设备通过 直播网络, 对直播系统头端播放的媒体文件进行录制; 录制错误即为由于网 络传输或录制终端自身工作故障等原因, 而导致的录制终端所录制的数据与 直播系统头端的原始数据不符。
图 1为本发明媒体文件录制错误的修复方法第一实施例流程图。 如图 1 所示, 本实施例包括:
步骤 101、 当录制终端在媒体文件的直播录制中识别到录制错误时, 生 成该录制错误的描述信息。
步骤 103、 向网络侧设备发送录制修复请求, 该录制修复请求包括步骤 1 01中生成的录制错误的描述信息。
步骤 105、 在接收到网络侧设备根据录制错误的描述信息发送的修复信 息时, 根据该修复信息对录制终端录制的媒体文件进行修复。
本实施例当录制终端出现媒体文件的录制错误时, 通过录制终端与网络 侧设备之间的双向网络, 向网络侧设备发送包括录制错误的描述信息的录制 修复请求, 并根据网络侧设备发送的修复信息对自身录制的媒体文件进行修 复, 从而保证媒体文件录制错误修复的可靠性。
发明人在实现本发明实施例过程中发现, 为降低录制错误, 可采取多种 录制错误规避方法, 例如:
提升网络传输质量的规避方法: 该方法关键是提升物理链路的质量, 对 物理链路质量存在影响的主要因素包括传输损耗、 传输干扰、 多径效应等, 一般采用链路协商、 线路屏蔽等手段来解决; 但在卫星以及地面直播电视传 输网络中, 由于传输介质是空气, 比较容易受到外界干扰, 其网络传输不仅 不可能做到无差错传输, 反而还有可能出现由于强信号干扰导致信号质量大 大降低的情况。
网络传输纠错的规避方法: 该方法通过引入冗余信息对链路传输错误进 行识别和纠错, 比如纠错码, 如线性分组码、 循环码、 卷积码等数学方法; 但数学方法的引入无法完全消除网络传输错误, 如卫星和地面传输的情况, 可能由于持续的干扰, 导致数据片段的无法正常接收。
提高录制终端工作稳定性的规避方法: 录制终端本身是机械电子装置, 对于由震动干扰、 电磁干扰、 网络冲击导致的工作稳定性问题无法完全消除, 一般可采取结构抗震设计, 硬件电磁兼容性设计等尽可能降低外界干扰, 但 始终无法 100 %消除干扰。
可靠传输协议的规避方法: 可靠传输协议是一种基于双向通信机制的差 错恢复方案, 一般应用基于双向通信网络提供直播服务的解决方案中, 比如, 基于 IP网络通过 TCP承载的直播; 可靠传输协议可以要求重传差错报文, 但 由于直播的时延要求, 这样的差错规避是有限的, 一般只能局限在终端侧直 播緩冲的时间范围内。
录制终端播放纠错的规避方法: 播放纠错技术应用非常普遍, 其主要思 想就是跳帧, 采用跳帧的方式, 可以不影响录制文件的正常播放, 通过播放 纠错一定程度上改善了用户体验, 但其本质上没有对数据进行修复。
可见, 虽然通过上述规避方法可减少媒体文件直播录制中出现的录制错 误, 但录制错误还是不可避免的, 因此需要对直播录制过程中出现的录制错 误进行修复。 现有技术对录制终端出现的录制错误是通过媒体文件直播的单 向网络进行的, 即: 直播系统头端可向录制终端发送下行数据, 但录制终端 不能向直播系统头端发送上行数据。 区别于现有技术基于单向网络进行录制 错误的修复方法, 本发明实施例支持直播系统的录制终端和网络侧设备, 通 过录制终端和网络侧设备可进行交互通信的双向网络, 对由于网络传输或录 制终端实际录制中导致的录制错误, 录制终端可将包括录制错误描述信息的 录制修复请求发送给网络侧设备, 并根据网络侧设备发送的修复信息对录制 终端自身录制的媒体文件进行修复, 从而保证媒体文件录制错误修复的可靠 性。
图 2为本发明媒体文件录制错误的修复方法第二实施例流程图。 本实施 例中, 录制终端和网络侧设备所在的双向网络的架构为客户端 /服务器 ( Cl ient/Server , 以下简称 C/S ) 网络架构, 其中网络侧设备即为本发明实 施例的第一网络服务器; 第一网络服务器和录制终端都支持网络直播录制业 务。 如图 2所示, 本实施例包括:
步骤 201、 录制终端通过直播网络录制直播系统头端直播的媒体文件, 并识别录制的媒体文件是否发生了录制错误。
录制错误的识别方式可包括:
录制终端在媒体文件的直播录制过程中, 实时监控录制终端通过直播网 络接收来自直播录制系统头端的直播媒体文件, 当录制终端识别到数据接收 过程中发生丟包、 乱序、 错包等问题而导致的丟帧、 坏帧等问题, 则录制终 端识别到发生了录制错误;
如果录制终端在媒体文件接收过程中因网络传输、 录制终端故障而导致 的录制错误无法实时识别和记录的, 可在录制终端对录制的媒体文件进行解 码时进行录制错误的识别。 当录制终端发现对录制的媒体文件不能正确解码 等问题时, 则录制终端识别到发生了录制错误;
此外, 录制错误还可通过人工识别的方式进行。 如果录制终端接收媒体 文件没有实时识别出录制错误, 且在解码录制的媒体文件没有发现异常, 但 在录制的媒体文件播放过程中出现局部区域花屏或马赛克现象时, 可通过人 工识别方式识别发生的录制错误。
步骤 203、 当识别到录制错误时, 记录与录制错误的相关信息, 生成录 制错误的描述信息。
当识别到录制错误时, 可根据不同录制错误的类型生成不同的录制错误 的描述信息; 生成的录制错误的描述信息包括有录制错误的类型信息。 例如: 对于直播系统头端直播的媒体文件以视频帧方式进行网络传输时, 录制终端 对录制错误的记录方式包括:
当录制错误的类型为丟帧 (丟帧即为丟失视频帧数据) 时, 可将该录制 错误的类型值设为 1, 此时需记录丟帧相关信息, 包括丟失视频帧相邻的正 确视频帧的标识信息和时间信息, 相应的, 生成的错误类型的描述信息可包 括: 录制错误的类型 (类型值为 1 ) , 与丟失视频帧相邻的正确视频帧的标 识信息和时间信息。 其中, 如果直播的媒体文件在网络中是通过比特(Bi t ) 流的传输格式, 与丟失视频帧相邻的正确视频帧的标识信息可包括与丟失视 频帧相邻的正确视频帧的起始码前缀, 该起始码前缀可为 H. 264视频编码标 准中网络抽象层( Network Abs tract Layer,简称 NAL )定义的起始码前缀( s tar t -code-pref ix )参数; 如果直播的媒体文件在网络中是通过面向数据包 的传输格式, 与丟失视频帧相邻的正确视频帧的标识信息可包括传输协议索 ? I和视频帧的部分字节; 而时间信息可包括解码时间标签(Decoding Time S tamp, 简称 DTS )或日历时间等。
当录制错误的类型为坏帧 (坏帧即为视频帧中部分数据已损坏) 时, 可 将该录制错误的类型值设为 2, 此时需记录坏帧相关信息, 包括损坏视频帧 的标识信息、 与损坏视频帧相邻的正确视频帧的标识信息和时间信息。 相应 的, 生成的错误类型的描述信息可包括: 录制错误的类型 (类型值为 2 ) , 与丟失视频帧相邻的正确视频帧的标识信息和时间信息。
当录制错误是通过人工识别而识别出时, 录制错误的类型值设为其他类 型, 可将该录制错误的类型值设为 3, 此时需记录出现局部区域花屏或马赛 克现象的时间起止点和时长信息。 由于人工识别录制错误时, 考虑到人工识 别存在的反应误差, 记录的时间起止点前后需各增加预设的反应时长, 优选 的, 反应时长为 300毫秒。
步骤 205、 录制终端向第一网络服务器发送录制修复请求, 该修复录制 修复请求包括录制错误的描述信息。
步骤 207、 第一网络服务器接收到录制修复请求, 解析录制修复请求, 在第一网络服务器录制的媒体文件中查找与录制错误描述信息匹配的录制数 据, 将该录制数据作为修复信息发送给录制终端。
步骤 209、 录制终端根据第一网络服务器发送的录制数据, 对录制终端 录制的媒体文件进行修复。
录制终端在接收到来自第一网络服务器的修复信息时, 发起自身录制的 媒体文件的录制错误修复的方式非常灵活, 例如: 录制终端可在接收到来自 第一网络服务器的修复信息时, 自动启动录制错误的修复流程; 或在满足预 设条件时自动启动录制错误的修复流程; 或在外部触发(如: 用户人工启动 等) 时启动录制错误的修复流程。
修复录制错误的另一现有技术中, 录制终端可基于延时传输的节目对录 制内容进行纠错和修复, 延时后通过另外一个频道传输同样的节目。 发明人 在实现本发明实施例过程中发现, 对于某个直播频道节目, 延时后通过另外 一个频道传输的现有技术, 在进行录制错误修复过程中, 需要对录制终端录 制的媒体文件进行整体替换, 因此需要长时间占用一个频道, 线路带宽利用 率低。
区别于该现有技术, 为了降低录制错误修复对线路带宽的使用, 提高线 路带宽的利用率, 本发明实施例录制终端发起录制错误修复时, 可根据第一 网络服务器发送的录制数据, 针对不同的录制错误的类型, 对录制的媒体文 件中发生录制错误的特定数据片段进行相应的修复; 例如: 在录制错误的类型为丟帧时, 录制终端将来自第一网络服务器的修复信 在录制错误的类型为坏帧时, 录制终端用来自第一网络服务器的修复信 息置换录制终端录制的媒体文件中损坏视频帧的相应数据;
在录制错误的类型为其他类型时, 录制终端用来自第一网络服务器的修 复信息置换录制终端录制的媒体文件中需修复的相应数据。
步骤 211、 录制终端完成对自身录制的媒体文件的修复处理后, 对修复 片段进行解码测试。
为了降低媒体文件录制错误修复对线路带宽的使用, 录制终端可在空闲 状态下自动启动对修复片段的解码测试, 例如: 当用户没有使用录制终端时, 录制终端可自动启动对修复片段的解码测试,在解码测试过程中不输出视频。
如果修复片段顺利通过解码测试,录制终端此次录制错误修复流程结束; 如果修复片段未能通过解码测试,录制终端将重新生成录制错误的描述信息, 并向第一网络服务器重新发送录制修复请求, 重复执行步骤 207-步骤 211, 直至录制错误修复完成。 因此, 通过修复片段进行解码测试, 可进一步保证 修复后的数据可正常解码, 保证录制修复的准确性和可靠性。
本实施例在 C/S网络架构中, 通过支持直播录制业务的录制终端和第一 网络服务器通信的双向网络, 实现录制终端录制的媒体文件中录制错误的修 复, 保证媒体文件录制错误修复的可靠性; 由于录制终端生成的录制错误的 描述信息包括录制错误的详细信息, 有利于第一网络服务器根据该描述信息 准确获取匹配的修复信息, 从而有利于提高录制终端进行录制错误修复的准 确性; 录制终端在接收到来自第一网络服务器的修复信息时, 可根据实际需 要进行录制错误的修复处理, 方式灵活, 如录制终端可根据获取的修复信息, 对录制终端录制的媒体文件中发生录制错误的特定数据片段进行插入或置换 等修复处理, 因此, 不需要对录制终端录制的媒体文件进行整体替换, 可降 低媒体文件录制错误修复对线路带宽的使用, 从而有利于提高线路带宽的利 用率; 进一步的, 本实施例录制终端修复录制错误后, 通过对修复片段进行 检测, 直至修复片段通过检测方结束录制错误的修复流程, 从而提高了录制 错误修复的可靠性和准确性。
图 3为本发明媒体文件录制错误的修复方法第三实施例流程图。 本实施 例中, 网络侧设备包括点对点 (Point to Point , 以下简称 P2P ) 节点服务 器以及与 P2P节点服务器通信连接的其他录制终端, 其中, P2P节点服务器 即为本发明实施例的第二网络服务器; 录制终端和其他录制终端基于的网络 架构为 P2P网络架构。 如图 3所示, 本实施例包括:
步骤 301、 录制终端通过直播网络录制直播系统头端直播的媒体文件, 并识别录制的媒体文件是否发生了录制错误。
录制错误的识别方式可参见图 2 所示实施例中录制错误识别方式的记 载, 不再赘述。
步骤 303、 当识别到录制错误时, 录制终端生成录制错误的描述信息。 当识别到录制错误时, 可根据不同录制错误的类型生成不同的录制错误 的描述信息; 生成的录制错误的描述信息包括有录制错误的类型信息。 例如: 对于直播系统头端直播的媒体文件以数据分片方式进行网络传输时, 录制终 端对录制错误的记录方式包括:
当录制错误的类型为分片内丟帧(分片内丟帧即为: 数据分片没有丟失, 但数据分片不完整, 存在丟失视频帧) 时, 可将该录制错误的类型值设为 4, 此时需记录分片内丟帧相关信息, 包括: 丟失视频帧所在的数据分片信息、 与丟失视频帧相邻的正确视频帧的标识信息和时间信息, 相应的, 生成的错 误类型的描述信息可包括: 录制错误的类型 (类型值为 4 ) , 丟失视频帧所 在的数据分片信息、与丟失视频帧相邻的正确视频帧的标识信息和时间信息。 其中, 如果直播的媒体文件在网络中是通过比特(Bi t )流的传输格式, 与丟 失视频帧相邻的正确视频帧的标识信息可包括与丟失视频帧相邻的正确视频 帧的起始码前缀, 该起始码前缀可为 H. 264 视频编码标准中网络抽象层 ( Ne twork Abs t rac t Layer, 简 称 NAL ) 定 义 的 起 始 码 前 缀 ( s tar t _code_ pref ix )参数; 如果直播的媒体文件在网络中是通过面向数据 包的传输格式, 与丟失视频帧相邻的正确视频帧的标识信息可包括传输协议 索 I和视频帧的部分字节; 而时间信息可包括 DTS或日历时间等。
当录制错误的类型为丟片 (坏片即为: 丟失数据分片) 时, 可将该录制 错误的类型值设为 5, 此时需记录丟片相关信息, 包括与丟失数据分片相邻 的正确数据分片信息。 相应的, 生成的错误类型的描述信息可包括: 录制错 误的类型 (类型值为 5 ) , 与丟失数据分片相邻的正确数据分片信息。 当录 制错误中既包括部分数据分片的丟失, 未丟失的数据分片信息不完整时, 可 将信息不完整的数据分片按照丟失数据分片的方式进行处理, 该录制错误类 型视为与坏片错误类型 (类型值为 5 ) 。
当录制错误的类型为分片内坏帧 (分片内坏帧即为: 数据分片中部分视 频帧已损坏) 时, 可将该录制错误的类型值设为 6, 此时需记录分片内坏帧 相关信息, 包括损坏视频帧所在的数据分片信息、 与损坏视频帧相邻正确视 频帧的标识信息和时间信息。 相应的, 生成的错误类型的描述信息可包括: 录制错误的类型 (类型值为 6 ) , 损坏视频帧所在的数据分片信息、 与损坏 视频帧相邻正确视频帧的标识信息和时间信息。
当录制错误的类型为坏片 (坏片即为: 数据分片数据已损坏) 时, 可将 该录制错误的类型值设为 7, 此时需记录坏片相关信息, 包括损坏数据分片 信息、 与损坏数据分片相邻正确数据分片的标识信息和时间信息。 。 相应的, 生成的错误类型的描述信息可包括: 录制错误的类型 (类型值为 7 ) , 损坏 数据分片信息、 与损坏数据分片相邻正确数据分片的标识信息和时间信息。
当录制错误是通过人工识别而识别出时, 录制错误的类型值设为其他类 型, 可将该录制错误的类型值设为 3, 此时需记录出现局部区域花屏或马赛 克现象的时间起止点和时长信息。 由于人工识别录制错误时, 考虑到人工识 别存在的反应误差, 记录的时间起止点前后需各增加预设的反应时长, 优选 的, 反应时长为 300毫秒。
步骤 305、 录制终端向 P2P节点服务器(第二网络服务器)发送录制修 复请求, 该录制修复请求包括录制错误的描述信息。
步骤 307、 P2P节点服务器(第二网络服务器)解析接收的录制修复请求, 向其他录制终端广播携带有录制错误的描述信息的询问请求。
步骤 309、 存储有与录制错误的描述信息匹配的录制数据的其他录制终 端向 P2P节点服务器(第二网络服务器)发送询问响应。
步骤 31 1、 P2P节点服务器(第二网络服务器)将发送询问响应的其他录 制终端信息发送给发出录制修复请求的录制终端。
步骤 31 3、 录制终端根据第二网络服务器发送的其他录制终端信息, 向 其他录制终端获取与录制错误的描述信息匹配的录制数据, 该录制数据将作 为录制终端进行录制错误修复的修复信息。
步骤 315、 录制终端对自身录制的媒体文件进行修复。
录制终端在接收到来自其他录制终端的修复信息时, 发起自身录制的媒 体文件的录制错误修复的方式非常灵活, 例如: 录制终端可在接收到修复信 息时, 自动启动录制错误的修复流程; 或在满足预设条件时自动启动录制错 误的修复流程; 或在外部触发(如: 用户人工启动等) 时启动录制错误的修 复流程。 录制终端发起录制错误修复时, 可根据其他录制终端的录制数据, 针对不同的录制错误的类型对录制的媒体文件存在的录制错误进行相应的修 在录制错误的类型为分片内丟帧或丟片时, 录制终端将来自其他录制终 端的修复信息, 插入录制
Figure imgf000015_0001
的相应位置;
在录制错误的类型为分片内坏帧或坏片时, 录制终端用来自其他录制终 端的修复信息
Figure imgf000015_0002
相应数据; 在录制错误的类型为其他类型时, 录制终端用来自第一网络服务器的修 复信息置换录制终端录制的媒体文件中需修复的相应数据。
步骤 317、 录制终端完成对自身录制的媒体文件的修复处理完成后, 对 修复片段进行解码测试。
为了降低媒体文件录制错误修复对线路带宽的使用, 录制终端可在空闲 状态下自动启动对修复片段的解码测试, 例如: 当用户没有使用录制终端时, 录制终端可自动启动对修复片段的解码测试,在解码测试过程中不输出视频。
如果修复片段顺利通过解码测试,录制终端此次录制错误修复流程结束; 如果修复片段未能通过解码测试,录制终端将重新生成录制错误的描述信息, 并向第二网络服务器重新发送录制修复请求, 重复执行步骤 307-步骤 317, 直至录制错误修复完成。 因此, 通过修复片段进行解码测试, 可进一步保证 修复后的数据可正常解码, 保证录制修复的准确性和可靠性。
本实施例录制终端通过直播网络完成媒体文件的直播录制的同时, 还可 基于 P2P通信技术, 通过支持直播录制业务的录制终端和其他录制终端通信 的双向网络, 实现录制终端录制的媒体文件中录制错误的修复, 保证媒体文 件录制错误修复的可靠性; 由于录制终端生成的录制错误的描述信息包括录 制错误的详细信息, 有利于其他录制终端根据该描述信息准确获取匹配的修 复信息, 从而有利于提高录制终端进行录制错误修复的准确性; 录制终端在 接收到来自其他录制终端的修复信息时, 可根据实际需要进行录制错误的修 复处理, 方式灵活, 有利于降低媒体文件录制错误修复对线路带宽的使用; 进一步的, 本实施例录制终端修复录制错误后, 通过对修复片段进行检测, 直至修复片段通过检测方结束录制错误的修复流程, 从而提高了录制错误修 复的可靠性和准确性。
图 4为本发明媒体文件录制错误的修复方法第四实施例流程图。 当录制 终端录制的媒体文件的发生录制错误, 可通过多个异构网络实现录制错误的 修复。 本实施例中, 录制终端通信连接到的双向网络架构包括 C/S网络架构 和 P2P 网络架构; C/S 网络架构中支持直播录制业务的服务器为第一网络服 务器; P2P 网络中的 P2P节点服务器即为本发明实施例的第二网络服务器, P2P网络可包括多个其他录制终端; 如图 4所示, 本实施例包括:
步骤 401、 录制终端通过直播网络录制直播系统头端直播的媒体文件, 并识别录制的媒体文件是否发生了录制错误。
步骤 403、 当识别到录制错误时, 录制终端生成录制错误的描述信息。 步骤 405、 录制终端分别向第一网络服务器和 P2P节点服务器(第二网 络服务器 )发送录制修复请求, 该录制修复请求中包括录制错误的描述信息。
录制终端可先后向第一网络服务器和 P2P节点服务器(第二网络服务器) 分别发送录制修复请求; 或者, 录制终端可同时向第一网络服务器和 P2P节 点服务器(第二网络服务器)分别发送录制修复请求。
对于先后发送录制修复请求的情形, 如果录制终端先向一个网络服务器 发送录制修复请求, 当录制终端接收到该网络服务器的正确响应时, 可放弃 向另一网络服务器发送录制修复请求; 否则, 向另一网络服务器发送录制修 复请求。
对于录制终端同时向第一网络服务器和第二网络服务器发送录制修复请 求的情形, 如果录制终端接收到任一网络服务器率先返回到正确响应时, 则 录制终端可向另一网络服务器发送录制修复撤销请求。
本实施例通过录制终端关联的异构双向网络, 实现了录制错误的修复, 当录制终端在与一个网络服务器交互通信中未能获得修复信息时, 可通过另 一网络服务器获取修复录制错误所需的录制信息, 有利于提高录制错误修复 的可靠性。
图 5为本发明录制终端实施例结构示意图。 如图 5所示, 本实施例录制 终端包括录制模块 51、 生成模块 52、 修复请求模块 53和修复模块 54。
录制模块 51用于通过直播网络录制直播系统头端播放的媒体文件。
生成模块 52用于在媒体文件的直播录制中识别到录制错误时,生成录制 错误的描述信息。
修复请求模块 53用于向网络侧设备发送录制修复请求,该录制修复请求 包括生成模块 52生成的录制错误的描述信息。
修复模块 54 用于在接收到网络侧设备根据所述描述信息发送的修复信 息时, 根据修复信息对录制模块 51录制的媒体文件进行修复。
在上述技术方案的基础上, 当录制错误的描述信息包括录制错误的类型 信息时,修复模块 54还可包括:接收单元 541、插入单元 542和置换单元 543。
接收单元 541用于接收网络侧设备根据录制错误的描述信息发送的修复 信息。
插入单元 542用于在录制错误的类型为丟帧或丟片时, 将修复信息插入 置换单元 543用于在录制错误的类型为坏帧或坏片时, 用修复信息置换
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在上述技术方案的基础上, 在网络侧设备包括第一网络服务器和第二网 络服务器时, 修复请求模块 53还可包括: 第一修复请求单元 531和第二修复 请求单元 532。
第一修复请求单元 531用于向第一网络服务器发送录制修复请求。
第二修复请求单元 532用于向第二网络服务器发送录制修复请求。
修复请求模块 53 支持先后向第一网络服务器和第二网络服务器发送录 制修复请求的功能, 还支持同时向第一网络服务器和第二网络服务器发送录 制修复请求的功能。
在修复请求模块 53 支持先后向第一网络服务器和第二网络服务器发送 录制修复请求的功能时, 录制终端还可包括: 定时模块 55。
定时模块 55用于激活第一修复请求单元 531向第一网络服务器发送录制 修复请求并启动定时器,且修复模块 54在预设时间内未收到第一网络服务器 的正确响应时, 激活第二修复请求单元 532向第二网络服务器发送录制修复 请求;
或者,定时模块 55用于激活第二修复请求单元 532向第二网络服务器发 送录制修复请求并启动定时器,且修复模块 54在预设时间内未收到第二网络 服务器的正确响应时, 激活第一修复请求单元 531向第一网络服务器发送录 制修复请求。
在修复请求模块 53 支持同时向第一网络服务器和第二网络服务器发送 录制修复请求的功能时, 录制终端还可包括: 修复请求撤销模块 56。
修复请求撤销模块 56用于在修复模块 54接收到第一网络服务器响应时, 向第二网络服务器发送录制修复 ·ί敦销请求; 或者, 在修复模块 54接收到第二 网络服务器响应时, 向第一网络服务器发送录制修复 ·ί款销请求。 本实施例通 过录制终端与网络侧设备之间的双向网络, 由修复请求模块向网络侧设备发 送包括录制错误的描述信息的录制修复请求, 并由修复模块根据网络侧设备 发送的修复信息对自身录制的媒体文件进行修复, 从而保证媒体文件录制错 误修复的可靠性, 同时, 由于本实施例基于双向网络的双向信道进行录制错 误修复, 因此, 可降低媒体文件录制错误修复对线路带宽的使用, 从而有利 于提高线路带宽的利用率。 图 6为本发明网络服务器实施例结构示意图。 如 图 6所示, 本实施例网络服务器包括: 网络录制模块 61、 存储模块 62和录 制管理模块 63。
网络录制模块 61用于进行媒体文件的直播录制。
存储模块 62用于存储所述录制模块录制的数据。
录制管理模块 63用于接收录制修复请求,所述录制修复请求包括录制终 端在媒体文件的直播录制中识别的录制错误的描述信息; 向所述存储模块获 取与所述描述信息匹配的录制数据,并将所述录制数据发送给所述录制终端。
本实施例网络服务器可通过网络服务器与录制终端之间的双向网络, 接 收录制终端发送的录制修复请求, 并向录制终端发送与该请求匹配的网络服 务器的录制数据, 使得录制终端可对自身录制的媒体文件进行修复, 从而保 证媒体文件录制错误修复的可靠性。 进一步的, 本实施例修复模块可根据接 收的修复信息, 对录制终端录制的媒体文件中发生录制错误的特定数据片段 进行插入或置换等修复处理, 因此, 可降低媒体文件录制错误修复对线路带 宽的使用, 从而有利于提高线路带宽的利用率。
图 7为本发明另一网络服务器实施例结构示意图。 如图 7所示, 本实施 例网络服务器包括: 修复请求接收模块 71、 广播模块 72和修复请求响应模 块 73。
修复请求接收模块 71用于接收录制修复请求,该录制修复请求包括录制 终端在媒体文件的直播录制中识别的录制错误的描述信息。
广播模块 72用于广播携带有所述描述信息的询问请求。
修复请求响应模块 73 用于在接收到存储有与描述信息匹配的录制数据 的其他录制终端发送询问响应时, 将发送询问响应的其他录制终端信息发送 给录制终端。
本实施例网络服务器可通过网络服务器与录制终端之间的双向网络, 接 收录制终端发送的录制修复请求, 并向录制终端发送存储有与该请求匹配的 录制数据的其他录制终端的信息, 使得发送录制错误修复请求的录制终端可 向其他录制终端获取正确的录制数据, 对自身录制的媒体文件进行修复, 从 而保证媒体文件录制错误修复的可靠性。
图 8为本发明媒体文件录制错误的修复系统第一实施例结构示意图。 如 图 8所示, 本实施例媒体文件录制错误的修复系统包括: 直播系统头端 81、 录制终端 82和网络侧设备 83; 直播系统头端 81经由单向通信网络(如: 直 播网络等 )分别与录制终端 82和网络侧设备 83, 录制终端 82和网络侧设备 83经由双向通信网通信连接。
直播系统头端 81用于通过单向通信网直播媒体文件。
录制终端 82用于在对直播系统头端 81的媒体文件进行直播录制中识别 到录制错误时, 生成所述录制错误的描述信息; 向网络侧设备 83发送录制修 复请求, 该录制修复请求包括录制错误的描述信息; 在接收到所述网络侧设 备 8 3根据所述描述信息发送的修复信息时,根据所述修复信息对所述录制终 端录制的媒体文件进行修复。
网络侧设备 83用于在接收到录制终端 82发送的录制修复请求时, 向录 制终端 82发送与录制错误描述信息匹配的修复信息。
本实施例录制错误的修复系统中, 当录制终端录制直播系统头端的媒体 文件过程中发生录制错误时, 通过录制终端与网络侧设备之间的双向网络, 向网络侧设备发送包括录制错误的描述信息的录制修复请求, 并根据网络侧 设备发送的修复信息对自身录制的媒体文件进行修复, 从而保证媒体文件录 制错误修复的可靠性。
图 9为本发明媒体文件录制错误的修复系统第二实施例结构示意图。 如 图 9所示, 本实施例与图 8所示实施例的区别在于, 本实施例中, 网络侧设 备包括第一网络服务器 831 ; 网络侧设备向录制终端发送的修复信息包括第 一网络服务器 831录制的与录制错误的描述信息匹配的录制数据。 其中, 第 一网络服务器 831 包括: 网络录制模块 8311、 存储模块 8 312和录制管理模 块 8 31 3。
网络录制模块 831 1用于直播录制直播系统头端 81的媒体文件。
存储模块 8312用于存储网络录制模块 831 1录制的数据。
录制管理模块 831 3用于接收录制终端 82发送的录制修复请求, 该录制 修复请求包括录制终端 82 在媒体文件的直播录制中识别的录制错误的描述 信息; 向存储模块 8312获取与所述描述信息匹配的录制数据, 并将所述录制 数据发送给录制终端 82。
本实施例当录制终端识别出录制错误时, 可通过支持直播录制业务的录 制终端和第一网络服务器通信的双向网络(C/S 网络架构) , 向第一网络服 务器获取修复信息, 实现录制终端录制的媒体文件中录制错误的修复, 从而 保证媒体文件录制错误修复的可靠性。 图 10为本发明媒体文件录制错误的修复系统第三实施例结构示意图。如 图 10所示, 本实施例与图 8所示实施例的区别在于, 本实施例中, 网络侧设 备包括第二网络服务器 832和其他录制终端 833; 网络侧设备向录制终端发 送的修复信息包括: 其他录制终端 833录制的与描述信息匹配的录制数据。 其中, 第二网络服务器 832 包括: 修复请求接收模块 8321、 广播模块 8322 和修复请求响应模块 8323。
修复请求接收模块 8321用于接收录制修复请求,该录制修复请求包括录 制终端 82在媒体文件的直播录制中识别的录制错误的描述信息。
广播模块 8322用于广播携带有描述信息的询问请求。
修复请求响应模块 8323 用于在接收到存储有与描述信息匹配的录制数 据的其他录制终端 833向第二网络服务器 832发送询问响应时, 将发送询问 响应的其他录制终端信息发送给录制终端 82。
其他录制终端 833用于当接收到第二网络服务器 832的询问请求时, 根 据询问请求携带的描述信息判断自身是否存储有与该描述信息匹配的录制数 据, 当其他录制终端 833 自身存储有与该描述信息匹配的录制数据时, 向第 二网络服务器 832发送询问响应。
本实施例当录制终端识别出录制错误时, 可通过支持直播录制业务的录 制终端、 第二网络服务器及其他录制终端通信的双向网络(P2P网络架构) , 向第二网络服务器发送录制修复请求, 并根据第二网络服务器发送的存储有 与录制错误描述信息匹配的录制数据的其他录制终端信息时, 向相应的其他 录制终端获取修复信息, 实现录制终端录制的媒体文件中录制错误的修复, 从而保证媒体文件录制错误修复的可靠性
图 11为本发明媒体文件录制错误的修复系统第四实施例结构示意图。如 图 11所示, 本实施例与图 8所示实施例的区别在于, 本实施例基于异构双向 网络实现录制终端录制错误的修复。 本实施例中, 网络侧设备可包括第一双 向网络架构(如: C/S网络架构)下的第一网络服务器 831, 和第二双向网络 架构 (如: P2P网络架构) 下的第二网络服务器 832及其他录制终端 833。 录制终端 82还用于分别向第一网络服务器 831 和第二网络服务器 832 分别发送录制修复请求。
录制终端 82可先后向第一网络服务器 831和第二网络服务器 832分别发 送录制修复请求; 或者, 录制终端 82可同时向第一网络服务器 831和第二网 络服务器 832分别发送录制修复请求。
对于先后发送录制修复请求的情形,如果录制终端 82先向一个网络服务 器发送录制修复请求, 当录制终端接收到该网络服务器的正确响应时, 可放 弃向另一网络服务器发送录制修复请求; 否则, 向另一网络服务器发送录制 修复请求。
对于录制终端 82同时向第一网络服务器 831和第二网络服务器 832发送 录制修复请求的情形,如果录制终端 82接收到任一网络服务器率先返回到正 确响应时, 则录制终端可向另一网络服务器发送录制修复 ·ί款销请求。
关于第一网络服务器 831的细化功能模块可参见图 9的记载, 而基于录 制终端 82与第一网络服务器 831通信的第一双向网络实现录制错误修复的实 现方式, 可参见图 2对应实施例的记载, 不再赘述; 关于第二网络服务器 832 的细化功能模块可参见图 10的记载, 而基于录制终端 82、 第二网络服务器 832与其他录制终端 833之间通信的第二双向网络实现录制错误修复的实现 方式, 可参见图 3对应实施例的记载, 不再赘述。
本实施例通过录制终端关联的异构双向网络, 实现了录制错误的修复, 当录制终端在与一个网络服务器交互通信中未能获得修复信息时, 可通过另 一网络服务器获取修复录制错误所需的录制信息, 有利于提高录制错误修复 的可靠性。
本领域普通技术人员可以理解: 附图只是一个优选实施例的示意图, 附 图中的模块或流程并不一定是实施本发明所必须的。
本领域普通技术人员可以理解: 实施例中的装置中的模块可以按照实施 例描述分布于实施例的装置中, 也可以进行相应变化位于不同于本实施例的 一个或多个装置中。 上述实施例的模块可以合并为一个模块, 也可以进一步 拆分成多个子模块。
上述本发明实施例序号仅仅为了描述, 不代表实施例的优劣。
本领域普通技术人员可以理解: 实现上述方法实施例的全部或部分步骤 可以通过程序指令相关的硬件来完成, 前述的程序可以存储于一计算机可读 取存储介质中, 该程序在执行时, 执行包括上述方法实施例的步骤; 而前述 的存储介质包括: R0M、 RAM, 磁碟或者光盘等各种可以存储数据的介质。
最后应说明的是: 以上实施例仅用以说明本发明的技术方案, 而非对其 限制; 尽管参照前述实施例对本发明进行了详细的说明, 本领域的普通技术 人员应当理解: 其依然可以对前述实施例所记载的技术方案进行修改, 或者 对其中部分技术特征进行等同替换; 而这些修改或者替换, 并不使相应技术 方案的本质脱离本发明实施例技术方案的精神和范围。

Claims

权 利 要 求 书
1、 一种媒体文件录制错误的修复方法, 其特征在于, 包括:
当录制终端在媒体文件的直播录制中识别到录制错误时, 生成所述录制 错误的描述信息;
向网络侧设备发送录制修复请求,所述录制修复请求包括所述描述信息; 在接收到所述网络侧设备根据所述描述信息发送的修复信息时, 根据所 述修复信息对所述录制终端录制的媒体文件进行修复。
2、 根据权利要求 1所述的媒体文件录制错误的修复方法, 其特征在于, 所述网络侧设备包括第一网络服务器; 所述修复信息包括所述第一网络服务 器录制的与所述描述信息匹配的录制数据。
3、 根据权利要求 1所述的媒体文件录制错误的修复方法, 其特征在于, 所述网络侧设备包括第二网络服务器和其他录制终端; 所述修复信息包括所 述其他录制终端录制的与所述描述信息匹配的录制数据;
所述向网络侧设备发送录制修复请求, 包括: 向所述第二网络服务器发 送所述录制修复请求;
所述在接收到网络侧设备根据所述描述信息发送的修复信息时, 根据所 述修复信息对所述录制终端录制的媒体文件进行修复, 包括: 在接收到所述 第二网络服务器根据所述描述信息下发的存储有与所述描述信息匹配的录制 数据的其他录制终端信息时, 向所述其他录制终端获取与所述描述信息匹配 的录制数据,并根据所述录制数据对所述录制终端录制的媒体文件进行修复。
4、 根据权利要求 3所述的媒体文件录制错误的修复方法, 其特征在于, 在所述第二网络服务器接收到所述描述信息时, 还包括:
所述录制终端接收所述第二网络服务器发送的其他录制终端信息; 所述其他录制终端信息为向第二网络服务器发送询问响应的存储有与所 述描述信息匹配的录制数据的其他录制终端的信息;
所述询问响应对应于所述第二网络服务器向其他录制终端广播的携带有 所述描述信息的询问请求。
5、 根据权利要求 1所述的媒体文件录制错误的修复方法, 其特征在于, 所述网络侧设备包括第一网络服务器和第二网络服务器;
所述向网络侧设备发送录制修复请求, 具体包括:
向所述第一网络服务器发送所述录制修复请求, 且当预设时间内未收到 所述第一网络服务器的正确响应时, 向所述第二网络服务器发送所述录制修 复请求; 或者
向所述第二网络服务器发送所述录制修复请求, 且当预设时间内未收到 所述第二网络服务器的正确响应时, 向所述第一网络服务器发送所述录制修 复请求。
6、 根据权利要求 1所述的媒体文件录制错误的修复方法, 其特征在于, 所述网络侧设备包括第一网络服务器和第二网络服务器;
所述向网络侧设备发送录制修复请求包括: 向所述第一网络服务器和第 二网络服务器分别发送所述录制修复请求。
7、 根据权利要求 6所述的媒体文件录制错误的修复方法, 其特征在于, 向所述第一网络服务器和第二网络服务器分别发送所述录制修复请求之后, 还包括:
在接收到所述第一网络服务器响应时, 向所述第二网络服务器发送录制 修复 销请求; 或者
在接收到所述第二网络服务器响应时, 向所述第一网络服务器发送录制 修复撤销请求。
8、 根据权利要求 1所述的媒体文件录制错误的修复方法, 其特征在于, 所述描述信息包括所述录制错误的类型信息; 在直播的所述媒体文件以视频 帧方式进行网络传输时, 所述录制终端识别的所述录制错误的类型包括丟帧 和坏帧; 在所述录制错误的类型为丟帧时, 所述描述信息还包括: 与丟失视频帧 相邻的正确视频帧的标识信息和时间信息;
在所述录制错误的类型为坏帧时, 所述描述信息还包括: 损坏视频帧的 标识信息、 与损坏视频帧相邻的正确视频帧的标识信息和时间信息。
9、 根据权利要求 1所述的媒体文件录制错误的修复方法, 其特征在于, 所述描述信息包括所述录制错误的类型信息; 在直播的所述媒体文件以数据 分片方式进行网络传输时, 所述录制终端识别的所述录制错误的类型包括分 片内丟帧、 丟片、 分片内坏帧和坏片;
在所述录制错误的类型为分片内丟帧时, 所述描述信息还包括: 丟失视 频帧所在的数据分片信息、 与丟失视频帧相邻的正确视频帧的标识信息和时 间信息;
在所述录制错误的类型为丟片时, 所述描述信息还包括: 与丟失数据分 片相邻的正确数据分片信息;
在所述录制错误的类型为分片内坏帧时, 所述描述信息还包括: 损坏视 频帧所在的数据分片信息、 与损坏视频帧相邻正确视频帧的标识信息和时间 信息;
在所述录制错误的类型为坏片时, 所述描述信息还包括: 损坏数据分片 信息、 与损坏数据分片相邻正确数据分片的标识信息和时间信息。
1 0、 根据权利要求 8或 9所述的媒体文件录制错误的修复方法, 其特征 在于, 所述根据修复信息对所述录制终端录制的媒体文件进行修复, 包括: 根据修复信息及录制错误的类型, 对所述录制终端录制的媒体文件进行
1 1、根据权利要求 10所述的媒体文件录制错误的修复方法,其特征在于, 所述根据修复信息及录制错误的类型, 对所述录制终端录制的媒体文件进行 修复, 包括:
在所述录制错误的类型为丟帧、 分片内丟帧或丟片时, 将所述修复信息 插入所述录制终端
置;
在所述录制错误的类型为坏帧、 分片内坏帧或坏片时, 用所述修复信息 据。
12、 一种录制终端, 包括录制模块, 其特征在于, 还包括:
生成模块, 用于在媒体文件的直播录制中识别到录制错误时, 生成所述 录制错误的描述信息;
修复请求模块, 用于向网络侧设备发送录制修复请求, 所述录制修复请 求包括所述描述信息;
修复模块, 用于在接收到所述网络侧设备根据所述描述信息发送的修复 信息时, 根据所述修复信息对所述录制终端录制的媒体文件进行修复。
13、 根据权利要求 12所述的录制终端, 其特征在于, 在所述网络侧设备 包括第一网络服务器和第二网络服务器时, 所述修复请求模块包括:
第一修复请求单元,用于向所述第一网络服务器发送所述录制修复请求; 第二修复请求单元,用于向所述第二网络服务器发送所述录制修复请求。
14、 根据权利要求 12所述的录制终端, 其特征在于, 还包括:
定时模块, 用于激活所述第一修复请求单元并启动定时器, 且所述修复 模块在预设时间内未收到所述第一网络服务器的正确响应时, 激活所述第二 修复请求单元; 或者, 用于激活所述第二修复请求单元并启动定时器, 且所 述修复模块在预设时间内未收到所述第二网络服务器的正确响应时, 激活所 述第一修复请求单元。
15、 根据权利要求 13所述的录制终端, 其特征在于, 还包括:
修复请求撤销模块, 用于在接收到所述第一网络服务器响应时, 向所述 第二网络服务器发送录制修复 ·ί款销请求, 或者, 在接收到所述第二网络服务 器响应时, 向所述第一网络服务器发送录制修复撤销请求。
16、 根据权利要求 12所述的录制终端, 其特征在于, 在所述描述信息包 括所述录制错误的类型信息时, 所述修复模块包括:
接收单元,用于接收所述网络侧设备根据所述描述信息发送的修复信息; 插入单元, 用于在所述录制错误的类型为丟帧或丟片时, 将所述修复信 置;
置换单元, 用于在所述录制错误的类型为坏帧或坏片时, 用所述修复信
Figure imgf000029_0001
17、 一种网络服务器, 其特征在于, 包括:
网络录制模块, 用于进行媒体文件的直播录制;
存储模块, 用于存储所述录制模块录制的数据;
录制管理模块, 用于接收录制修复请求, 所述录制修复请求包括录制终 端在媒体文件的直播录制中识别的录制错误的描述信息; 向所述存储模块获 取与所述描述信息匹配的录制数据,并将所述录制数据发送给所述录制终端。
18、 一种网络服务器, 其特征在于, 包括:
修复请求接收模块, 用于接收录制修复请求, 所述录制修复请求包括录 制终端在媒体文件的直播录制中识别的录制错误的描述信息;
广播模块, 用于广播携带有所述描述信息的询问请求;
修复请求响应模块, 用于在接收到存储有与所述描述信息匹配的录制数 据的其他录制终端发送询问响应时, 将发送询问响应的其他录制终端信息发 送给所述录制终端。
19、 一种媒体文件录制错误的修复系统, 包括直播系统头端、 网络侧设 备和录制终端, 其特征在于,
所述录制终端用于在对所述直播系统头端的媒体文件进行直播录制中识 别到录制错误时, 生成所述录制错误的描述信息; 向网络侧设备发送录制修 复请求, 所述录制修复请求包括所述描述信息; 在接收到所述网络侧设备根 据所述描述信息发送的修复信息时, 根据所述修复信息对所述录制终端录制 的媒体文件进行修复;
所述网络侧设备用于在接收到所述录制修复请求时, 向所述录制终端发 送与所述描述信息匹配的修复信息。
20、根据权利要求 19所述的媒体文件录制错误的修复系统,其特征在于, 所述网络侧设备包括第一网络服务器; 所述修复信息包括所述第一网络服务 器录制的与所述描述信息匹配的录制数据; 所述第一网络服务器包括:
网络录制模块, 用于直播录制所述直播系统头端的媒体文件;
存储模块, 用于存储所述网络录制模块录制的数据;
录制管理模块, 用于接收录制修复请求, 所述录制修复请求包括录制终 端在媒体文件的直播录制中识别的录制错误的描述信息; 向所述存储模块获 取与所述描述信息匹配的录制数据,并将所述录制数据发送给所述录制终端。
21、根据权利要求 19所述的媒体文件录制错误的修复系统,其特征在于, 所述网络侧设备包括第二网络服务器和其他录制终端; 所述修复信息包括所 述其他录制终端录制的与所述描述信息匹配的录制数据; 所述第二网络服务 器包括:
修复请求接收模块, 用于接收录制修复请求, 所述录制修复请求包括录 制终端在媒体文件的直播录制中识别的录制错误的描述信息;
广播模块, 用于广播携带有所述描述信息的询问请求;
修复请求响应模块, 用于在接收到存储有与所述描述信息匹配的录制数 据的其他录制终端向所述第二网络服务器发送询问响应时, 将发送询问响应 的其他录制终端信息发送给所述录制终端。
22、根据权利要求 19所述的媒体文件录制错误的修复系统,其特征在于, 所述网络侧设备包括第一网络服务器和第二网络服务器;
所述录制终端还用于向所述第一网络服务器发送所述录制修复请求, 且 当预设时间内未收到所述第一网络服务器的响应时, 向所述第二网络服务器 发送所述录制修复请求; 或者, 向所述第二网络服务器发送所述录制修复请 求, 且当预设时间内未收到所述第二网络服务器的响应时, 向所述第一网络 服务器发送所述录制修复请求。
23、根据权利要求 19所述的媒体文件录制错误的修复系统,其特征在于, 所述网络侧设备包括第一网络服务器和第二网络服务器;
所述录制终端还用于向所述第一网络服务器和第二网络服务器分别发送 所述录制修复请求; 在接收到所述第一网络服务器响应时, 向所述第二网络 服务器发送录制修复 ·ί敦销请求, 或者在接收到所述第二网络服务器响应时, 向所述第一网络服务器发送录制修复撤销请求。
PCT/CN2009/074368 2008-11-21 2009-10-09 媒体文件录制错误的修复方法、录制终端、服务器和系统 WO2010057400A1 (zh)

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